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Up Topic The Rybka Lounge / Computer Chess / Traxler Refutation - Provisional Mainline.
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- - By Lazy Frank (****) [gb] Date 2018-05-11 01:32 Edited 2018-05-12 11:32
[Event "Traxler Refutation"]
[Site "Raivis"]
[White "White"]
[Black "Black"]
[ECO "C50"]
[Opening "Giuoco Pianissimo"]
[Variation "4.d3 Nf6 5.O-O d6"]
[PlyCount "27"]

1. e4 {B} e5 {B} 2. Nf3 {B} Nc6 {B} 3. Bc4 {B} Nf6 {B} 4. Ng5 {B} Bc5 {B}
5. Bxf7+ Ke7 6. Bc4 Qe8 7. Nc3 h6 8. Nf3 d6 9. O-O Rf8 10. a4 Kd8 11. Be2
Nd4 12. Nxd4 exd4 13. Na2 Qxa4 14. d3

[Event "Traxler Refutation"]
[Site "Raivis"]
[White "White"]
[Black "Black"]
[ECO "C50"]
[Opening "Giuoco Pianissimo"]
[Variation "4.d3 Nf6 5.O-O d6"]
[PlyCount "27"]

1. e4 {B} e5 {B} 2. Nf3 {B} Nc6 {B} 3. Bc4 {B} Nf6 {B} 4. Ng5 {B} Bc5 {B}
5. Bxf7+ Ke7 6. Bc4 Qe8 7. Nc3 h6 8. Nf3 d6 9. O-O Rf8 10. a4 Kd8 11. Be2
Nd4 12. Nxd4 exd4 13. Na2 Qxa4 14. d3
Parent - - By Lazy Frank (****) [gb] Date 2018-05-12 06:18 Edited 2018-05-12 11:21
Ok, till 14. d3 i'm almost sure it's best line from both sides of given opening.

Seems after d3 black fall in cascade failing in all cases:

14. d3 Be6 15. b3 Qc6 16. c4 dxc3 17. d4 c2 18. Qd3 Bb6 19. f3
14. d3 Be6 15. b3 Qe8 16. b4 Bb6 17. c4
14. d3 a5 15. Bd2 Qb5 16. Nc1 Bb6 17. b4
14. d3 a5 15. Bd2 Be6 16. Nb4
14. d3 a5 15. Bd2 Qe8 16. Bf3

r2k1r2/ppp3p1/1bqpbn1p/8/3PP3/1P1Q1P2/N1p1B1PP/R1B2RK1 b - - 0 19


r2kqr2/ppp3p1/1b1pbn1p/8/1PPpP3/3P4/N3BPPP/R1BQ1RK1 b - c3 0 17


r1bk1r2/1pp3p1/1b1p1n1p/pq6/1P1pP3/3P4/2PBBPPP/R1NQ1RK1 b - b3 0 17


r2k1r2/1pp3p1/3pbn1p/p1b5/qN1pP3/3P4/1PPBBPPP/R2Q1RK1 b - - 3 16


r1bkqr2/1pp3p1/3p1n1p/p1b5/3pP3/3P1B2/NPPB1PPP/R2Q1RK1 b - - 3 16
Parent - - By user923005 (****) [us] Date 2018-05-12 06:26
I have 5 different chess engines analyzing 700 important Traxler positions over the weekend.
Preliminary analysis shows that light analysis by computers is very unreliable.

Examine these evaluation swings:

Searching:
r3k2N/pppn2pp/8/3Pp3/Q1Bn2bq/2P5/PP1P1KPP/RNB4R w q - 0 1

infinite: 0 time: 0 increment: 0 moves to go: 0

1   +9.59   00:00   27749  g3 Qf6+ Kg2
2   +9.34   00:00   84470  Kf1 Qf6+ Ke1
3   +7.00   00:00  160227  Kf1 Qf6+ Ke1 Qh4+ g3
4   +5.55   00:00  224082  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Ke2
5   +8.39   00:00  284300  Kf1 Nf5 Na3 Ng3+ hxg3 Qxh1+ Kf2 Qh5
6   +3.59   00:00  338931  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Kg2
7   +3.47   00:00  395540  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Kg2 Ng5
8   +7.19   00:00  456641  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Rf1 Nxh2+ Kg1 Nxf1 Bxf1
9   +3.57   00:00  587428  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 d4 Ng5+ Ke1 Nf3+ Kd1 Nxd4+ Ke1
10   +3.22   00:00  677024  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Kg2 Ng5 Rf1 Bf3+ Kf2 Bd1+ Ke1 Bxa4 Rxf6 Nxf6 d4 Nf3+ Ke2
11   +3.10   00:00  738970  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Kg2 Ng5 Rf1 Bf3+ Kf2 Bd1+ Ke1 Bxa4 Rxf6 Nxf6
12   +3.28   00:00  800262  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Kg2 Ng5 Rf1 Bf3+ Kf2 Bd1+ Ke1 Bxa4 Rxf6
13   +3.20   00:00  924377  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Rf1 Nxh2+ Kg1 Nxf1 Bxf1 Qf3 Bg2 Qxg3 Qe4 Bh3 d3 Ke7 Qf3 Qxg2+ Qxg2
14   +3.17   00:00   1042K  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Rf1 Nxh2+ Kg1 Nxf1 Bxf1 Qf3 Bg2 Qxg3 Qe4 Bh3 d3 Ke7 Qf3 Qxg2+ Qxg2 Bxg2 Bg5+ Nf6 Kxg2 Rxh8 Nd2 Rd8 Rh1 Rxd5 Rxh7
15   +3.22   00:00   1100K  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Rf1 Nxh2+ Kg1 Nxf1 Bxf1 Qf3 Bg2 Qxg3 Qe4 Bh3 d3 Bxg2 Qxg2 Qe1+ Qf1
16   +3.05   00:00   1207K  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Rf1 Nxh2+ Kg1 Nxf1 Bxf1 Qf3 Bg2 Qxg3 Qe4 Bh3 d3 O-O-O Qf3 Qxf3 Bxf3 Rxh8 Be3 Bf5 Nd2 Bxd3
17   +3.03   00:00   1457K  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Kg2 Ng5 Rf1 Bf3+ Kf2 Bd1+ Ke1 Bxa4 Rxf6 Nxf6 Be2 e4 c4 Bd7 d3 Nf3+ Kf2 Nd4 Nc3 Nxe2 Kxe2
18   +3.03   00:00   1534K  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Kg2 Ng5 Rf1 Bf3+ Kf2 Bd1+ Ke1 Bxa4 Rxf6 Nxf6 Be2 e4 c4 Bd7 d3 Nf3+ Kf2 Nxh2 Kg2 exd3 Bxd3
19   +3.08   00:00   1791K  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Rf1 Nxh2+ Kg1 Nxf1 Bxf1 Qf3 Bg2 Qxg3 Qe4 Bh3 Qf3 Qxg2+ Qxg2 Bxg2 Kxg2 Ke7 c4 Rxh8 b3 Kf6 Ba3
20   +3.35   00:00   2024K  Kf1 Qf6+ Ke1 Qh4+ g3 Nf3+ Kf2 Qf6 Rf1 Nxh2+ Kg1 Nxf1 Bxf1 Qf3 Bg2 Qxg3 Qe4 Bh3 Qf3 Qxg2+ Qxg2 Bxg2 Kxg2 Ke7 c4 Rxh8 b3 h5 Ba3+ Kd8 Nc3 Rh6
21   -2.77   00:01  17096K  Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 Nf7 Qf6+ d4 Qxf7 Na3 Nxd5+ Bxd5 Qxd5 Be3 Bd7 Nc4 Qe4 Rhe1 Be6 Nd2 Qxg2 Rg1 Qe2 Rae1 Qxh2 Rxg7 Qd6 Rxh7
22   -4.39   00:02  36051K  Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb3 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 Rd1 Qxh2 d3 Qxg2 Rd2 Qg1 Kc2 Rxh8 Nc3 Rd8 Bb2 Qc5 Rf1 Qc6 Kd1 Bf3+ Kc2 b5
23   -4.81   00:03  50155K  Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb3 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Kb2 Rf8 Rd2 Rf3 a4 Qxh2 Rc2 Qg3 Nc3 Bh3 Bd2 Bf5 Be1 Qf4 Rd2 Bd3
24   -5.07   00:05  73620K  Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Kb2 Rf8 Nc3 Rf2+ Rd2 Qxd4 Rxf2 Qxf2+ Ka3 b5 b4 Qa7+ Kb3 Qd4 Bb2 Bd5+ Nxd5
25   -5.05   00:06  85331K  Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb3 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Kb2 Rf8 Rd2 Rf3 a4 Qxh2 Rc2 Qh3 Ra3 Qg4 a5 Qxd4+ Ka2 Rf2 Rxf2 Qxf2+ Ka1 Qf1 Kb2 Be4 axb6
26   -5.21   00:08 107062K  Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 Rd1 Bxg2 d4 Rxh8 Na3 Re8 Rd2 Qxh2 Nc2 Qg3+ Rd3 Qg6 Rd2 Re6 Kb2 Be4 Rf2 Bxc2 Rxc2 Qd3 d5 Qd4+ Ka3 Qxd5 Bf4
27   -5.47   00:14 183363K  Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Na3 Re8 Rd2 Qxh2 Nc2 Qg3+ Rd3 Qg6 Rd2 Re6 Nb4 Be4 Ba3 c5 Nc2 Bxc2 Rxc2 Kb8 Rd1
28   -5.42   00:16 209431K  Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb5 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Na3 Re8 Nc2 Qxh2 Rd2 Qg3+ Rd3 Qg6 Rd2 Re6 Kb2 Be4 a4 Rf6
29   -5.55   00:18 243401K  Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb3 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Na3 Re8 Rd2 Qxh2 Kb2 Qg3 Nb5 Rf8 a4 Be4 Nc3 Bg6 Ra3 Rf2 Rxf2 Qxf2+ Ka1 Qxd4 Bb2 Qd3 Ka2
30   -5.57   00:24 319805K  Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Na3 Re8 Rd2 Qxh2 Nc2 Qg3+ Rd3 Qg6 Rd2 Re6 Kb2 Qg3 Na3 Re8 Rc2 Be4 Re2 Qg4 Rd2 Rf8 Nc4 Qg3 Ne5
Nodes: 319864917
Nodes/second: 12877528
Best move: Ke3
Ponder move: O-O-O

Searching:
r3k2N/pppnq1pp/8/3Pp3/Q1Bn2b1/2P5/PP1P1KPP/RNB4R b q - 0 1

infinite: 0 time: 0 increment: 0 moves to go: 0

1   -9.55   00:00   32931  Qf6+ Kg3
2   -8.14   00:00  153316  Qf8+ Ke1
3   -6.45   00:00  236812  Qh4+ Kf1 O-O-O h3
4   -5.50   00:00  293814  Qh4+ g3 Qf6+ Kg2 Bf3+ Kg1 Ne2+ Bxe2
5   -1.40   00:00  349018  Qh4+ Kf1 O-O-O g3 Rf8+ Ke1 Nf3+ Ke2
6   -4.42   00:00  408301  Qh4+ Kf1 Ne2 Na3 O-O-O Nf7 Rf8
7   +0.00   00:00  466582  Qh4+ g3 Qf6+ Kg2 Bf3+ Kg1 Ne2+ Bxe2 Bxe2 h4 Qf1+ Kh2
8   +0.00   00:00  563166  Qh4+ g3 Qf6+ Ke1 Nf3+ Kf2 Nd4+
9   +0.00   00:00  632154  Qh4+ g3 Qf6+ Ke1 Nf3+ Kd1 Nd4+ Ke1
10   +0.00   00:00  691237  Qh4+ g3 Qf6+ Ke1 Nf3+ Kd1 Nd4+ Ke1
11   +0.00   00:00  760222  Qh4+ g3 Qf6+ Ke1 Nf3+ Kd1 Nd4+ Ke1
12   +0.00   00:00  885498  Qh4+ g3 Qf6+ Ke1 Nf3+ Kd1 Nd4+ Ke1
13   +0.00   00:00  951210  Qh4+ g3 Qf6+ Ke1 Nf3+ Kd1 Nd4+ Ke1
14   +0.00   00:00   1041K  Qh4+ Ke3 Qh6+ Kf2 Qh4+
15   +0.00   00:00   1114K  Qh4+ Ke3 Qh6+ Kf2 Qh4+
16   +0.57   00:00   1717K  Qh4+ g3 Qf6+ Ke1 Qf5 cxd4 Qe4+ Kf2 Qxh1 dxe5 Qxh2+ Kf1 Qh1+ Kf2 Qf3+ Ke1 Qxg3+ Kf1 Qxe5 Bd3 Bh3+ Kf2 Qh2+ Ke3 Qg1+ Ke4 Qxc1 Kf4 Qxb2
17   +1.10   00:00   3400K  Qh4+ g3 Qf6+ Ke1 Qf5 cxd4 Qe4+ Kf2 Qf3+ Ke1 Qxh1+ Bf1 Qxh2 d3 Qxg3+ Kd2 Qf4+ Kc2 Qxf1 Nc3 O-O-O Qxa7 Rf8 Qa8+ Nb8 dxe5 Bf5 b3 Rxh8 Kb2 Qxd3
18   +1.84   00:00   4695K  Qh4+ g3 Qf6+ Ke1 Qf5 cxd4 Qe4+ Kf2 Qxh1 dxe5 Qxh2+ Kf1 Qh1+ Kf2 Qf3+ Ke1 Qxg3+ Kf1 Qxe5 Qb3 Qf4+ Kg1 O-O-O Nf7 Re8 Na3 Qxf7 Qg3
19   +2.69   00:00  12066K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 Na3 Nxc4 Nxc4 Rxd5 Ne3 Qd4+ Kc2 Qxa1 Nxd5 Qxa2+ Kc3 Qxb3+ Kd4 Bd7 Nf7 Be6
20   +3.02   00:01  18111K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 d4 Nxc4 Kxc4 Bb5+ Kc3 Qe4 Rd1 Rxh8 Ba3 Qxd5 Rd2 Re8 Kb2 Re2 Rxe2 Bxe2 Nc3 Qxd4
21   +3.08   00:01  24087K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 d4 Nxc4 Kxc4 Bb5+ Kc3 Qe4 Rd1 Rxh8 Na3 Qxd5 Bf4 Qxg2 Nxb5 Qf3+ Kb2 Qxf4 Rac1 c6 Nxa7+ Kb8 Nxc6+ bxc6
22   +3.15   00:02  27545K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 d4 Nxc4 Kxc4 Bb5+ Kc3 Qe4 Rd1 Rxh8 Na3 Be2 Rd2 Qxg2 Kb2 Re8 d6 Qxh2 dxc7 Qd6 Rb1 Qg3
23   +3.29   00:03  39194K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 d4 Nxc4 Kxc4 Bb5+ Kc3 Qe4 Rd1 Rxh8 a4 Be2 Rd2 Rf8 Kb2 Bd3 Ka2 Qxd4 Na3 Rf2 Rxf2 Qxf2+ Bb2 g5 Rc1 Qxg2 d6 c6 Rd1 Qe2 d7+ Kxd7
24   +3.25   00:04  51426K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 d4 Nxc4 Kxc4 Bb5+ Kc3 Qe4 Rd1 Rxh8 Rd2 Rf8 a4 Be2 Kb2 Bd3 Ka2 Qxd4 Na3 Rf2 Rxf2 Qxf2+ Bb2 Qxg2 h4 Be4
25   +3.37   00:06  80514K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 Nf7 Qf6+ d4 Qxf7 Bg5 Nxd5+ Bxd5 Rxd5 Be3 Qe7 Kd2 Qe4 Nc3 Qxg2+ Kd3 Bb5+ Nxb5 Rxb5 Rhg1 Qb2 h4 Rf5 Raf1 Rxf1 Rxf1 Qxa2 Rf8+ Kd7 Rf7+ Ke6 Rxg7 Qxb3+ Ke2 Qc2+ Kf3
26   +4.19   00:13 168755K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 Rd1 Rxh8 Kc2 Rd8 Nc3 Bxg2 d3 Qxh2 Rd2 Qg3 Bb2 Bh3 Rh1 Bf5 Rhd1 Qf3
27   +5.10   00:21 270417K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Rxh8 Rd1 Bxg2 Na3 Re8 Rd2 Qxh2 Nc2 Qg3+ Rd3 Qg6 Rd2 Be4 Ba3 Bxc2 Rxc2 Qe4 Bb4 b5 Kb2 Qxd4+ Bc3 Qg4 Re1 Rxe1 Bxe1 Qe4
28   +5.45   00:28 362048K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 Rd1 Bxg2 d4 Rxh8 Na3 Re8 Rd2 Qxh2 Nb5 Qg3+ Kb2 Be4 a4 Bf5 Ka2 c6 Na3 Be6 Rb1 h5 Nc2 h4 Re2 Bxb3+ Rxb3 Rxe2 Rxg3 hxg3
29   +5.66   00:39 500899K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Na3 Re8 Nc4 Bd5 Rd2 Bxc4 bxc4 Re3+ Kb2 Qe7 a3 Rf3 Rc2 Qe4 Bd2 Qxd4+ Bc3 Qxc4 Rac1 Qa4 Ka2 c5 Bb2 g6 Ka1 Kc7 Rd2 Re3 Rg2 Qe8 Rd2 Qe4
30   +5.84   00:50 644982K  Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb5 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 Ng6 hxg6 Rd1 Bxg2 d4 Rf8 Rd2 Be4 Kb2 Rf3 Na3 Bd3 Nc2 Bxc2 Kxc2 Qe4+ Kb2 b5 Ka3 Qe7+ Kb2 Qe3 d5 Qe5+ Kb1 Rf1 Rc2 Qxd5 Kb2 Qe5+ Kb1
Nodes: 645032317
Nodes/second: 12781776
Best move: Qh4+
Ponder move: Ke3

Searching:
r3k2N/pppnq1pp/8/3Pp3/Q1Bn2b1/2P5/PP1P1bPP/RNB2K1R w q - 0 1

infinite: 0 time: 0 increment: 0 moves to go: 0

1   +9.55   00:00   27482  Kxf2
2   +8.26   00:00   99772  Kxf2 Qf8+ Kg1
3   +8.45   00:00  169638  Kxf2 b5 Bxb5 Qf8+ Ke1 Nxb5
4   +8.36   00:00  239159  Kxf2 b5 Bxb5 Qf8+ Ke1 Nxb5
5   +8.67   00:00  315668  Kxf2 b5 Bxb5 Qf8+ Ke1 Nxb5
6   +8.54   00:00  383066  Kxf2 b5 Bxb5 Nxb5 Qxg4 O-O-O
7   +8.21   00:00  460120  Kxf2 b5 Bxb5 Nxb5 Qxg4 O-O-O Qc4
8   +8.40   00:00  596022  Kxf2 b5 Bxb5 Nxb5 Qxb5 O-O-O Qc4 Bf5
9   +7.88   00:00  692938  Kxf2 Qh4+ Kf1 Ne2 Bb5 Rd8 Qc2 Ng3+ hxg3 Qxh1+ Kf2
10   +7.67   00:00  772836  Kxf2 Qh4+ Kf1 Ne2 Bb5 Rd8 Qxa7 Nxc1 Na3 Qf6+ Qf2 Ke7 Qxf6+ gxf6
11   +7.74   00:00  874982  Kxf2 Qh4+ Kf1 Ne2 Bb5 Rd8 Qxa7 Nxc1 Na3 c6 dxc6 bxc6 Rxc1 cxb5 Nxb5
12   +8.07   00:00  996547  Kxf2 Qf6+ Ke1 O-O-O cxd4 exd4 Be2 Qe5 Qc4 Rxh8 Kd1 Nf6 Na3 Kb8
13   +4.92   00:00   1289K  Kxf2 Qh4+ Kf1 Ne2 Bb5 Nxc1 g3 Qh5 Ke1 Bf5 Qh4 Qxh4 gxh4 Bd3 Kd1
14   +4.53   00:00   1611K  cxd4 Bxd4 Ke1 O-O-O Qa3 Qh4+ Qg3 Qxg3+ hxg3 Rxh8 Nc3 Bf5 a4 Nb6 Ba2 a5 Bb1
15   +3.17   00:00   2679K  Kxf2 Qh4+ Kf1 Ne2 Bb5 Nxc1 g3 Qh3+ Kg1 Bf3 Bxd7+ Qxd7 Qxd7+ Kxd7 Nf7 Nd3 c4 Bxh1 Kxh1 Rf8 Ng5
16   +2.75   00:00   3732K  Kxf2 Qh4+ Kf1 Ne2 Bb5 Nxc1 g3 Qh3+ Kg1 Bf3 Bxd7+ Qxd7 Qxd7+ Kxd7 Nf7 Nd3 Ng5 Bxd5 Nxh7 Rh8 Ng5 Rf8 Na3
17   +3.85   00:00   4205K  Kxf2 Qh4+ Kf1 Ne2 Bb5 Nxc1 b3 O-O-O Nf7 Nd3 Bxd3 Rf8 g3 Qf6+ Ke1 Qf3 Rf1 Qd1+ Kf2 Rxf7+ Kg2 Rxf1 Bxf1 Bf3+ Kf2 Bxd5 Qxa7
18   +0.00   00:00   6233K  Kxf2 Qh4+ g3 Qf6+ Ke1 Nf3+ Kd1 Nd4+ Ke1
19   +0.00   00:00   6359K  Kxf2 Qh4+ g3 Qf6+ Ke1 Nf3+ Kd1 Nd4+ Ke1
20   +0.00   00:00   6542K  Kxf2 Qh4+ g3 Qf6+ Ke1 Nf3+ Kd1 Nd4+ Ke1
21   -2.39   00:01  15222K  Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 d4 Nxc4 Kxc4 Bb5+ Kc3 Qg4 Na3 Qxg2 Re1 Ba6 Nc4 Qxd5 Be3 Bxc4 bxc4 Qa5+ Kd3
22   -3.42   00:02  36301K  Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 Nf7 Qf6+ d4 Qxf7 Be3 Nxc4 bxc4 b5 Nd2 bxc4 Rac1 Qxd5 Kb2 Qxg2 Rhg1 Qe2 Rge1 c3+ Kxc3 Qxh2
23   -3.08   00:03  41278K  Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 d4 Nxc4 Kxc4 Qe4 Kc3 Bb5 Rd1 Rxh8 Rd2 Rf8 a4 Be2 Kb2 Bd3 Nc3 Qxd4 a5 Rf2 Rxf2 Qxf2+ Ka3 Qc5+ Kb2 Qd4 Bd2 Qf2 Rd1 Qxg2
24   -4.25   00:06  82497K  Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 Rd1 Bxg2 d4 Rxh8 Na3 Bd5 Be3 Re8 Re1 Qh3 Nc2 Be4 Nb4 Rf8 Kd2 Qxh2+ Re2 Qh3
25   -4.51   00:08 101380K  Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb3 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 Rd1 Bxg2 d4 Rxh8 Na3 Qxh2 Be3 Re8 Bg1 Qh3+ Rd3 Qf5 Nc4 Re2 Rd2 Qf3+ Kb4 Rxd2 Nxd2 Qe2 Kc3
26   -4.93   00:12 157816K  Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb3 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Na3 Qxh2 Be3 Qg3 Re1 h5 Re2 h4 Rg1 h3 Nc4 g5 Kb2 Rf8
27   -5.10   00:17 221661K  Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb3 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Na3 Re8 Rd2 Qxh2 Kb2 Qg3 Nb5 Be4 a4 Bf5 Ra3 Re3 Rc2 Bxc2 Bxe3 Qxe3 Kxc2 Qe2+ Kc3
28   -5.17   00:19 248014K  Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Na3 Re8 Rd2 Qxh2 Kb2 Qg3 Nb5 Bf1 a4 Rf8 Rc2 Rf2 Rxf2 Qxf2+ Kc3 Qe1+ Kb2 Bxb5 axb5 Qe2+ Kc3 Qxb5
29   -5.58   00:29 376292K  Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb3 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 Rd1 Bxg2 d4 Rxh8 Rd2 Rf8 a4 Bd5 Kb2 Rf2 Rxf2 Qxd4+ Nc3 Qxf2+ Ka3 Bf7 Ra2 Qc5+ Kb2 Qd4 Ra3 Qf2+ Ka1 Qxh2 Bb2 h5 a5 bxa5 Rxa5 Bxb3 Rg5 Qh1+ Nb1
30   -6.97   01:41   1283M  Kxf2 Qh4+ g3 Qf6+ Ke1 Qf5 Rf1 Nc2+ Qxc2 Qxc2 Kf2 Bh3 Na3 Qe4 Re1 Qf5+ Kg1 O-O-O d4 Rf8 Be3 Qf3 Bf1 Bxf1 Rxf1 Qxe3+ Kg2 Qe4+ Kh3 Rxh8 d6 exd4 cxd4 Qxd4 Nb5 Qc5 Nxc7 Qxd6 Rfc1 Ne5 Rc3 Qh6+ Kg2
Nodes: 1283508967
Nodes/second: 12703104
Best move: Kxf2
Ponder move: Qh4+

Searching:
r3k2N/ppp1q1pp/5n2/3Pp3/2Bn2b1/2P5/PP1P1bPP/RNBQ1K1R w q - 0 1

infinite: 0 time: 0 increment: 0 moves to go: 0

1   +1.89   00:00   31200  Qa4+ Bd7
2   +3.77   00:00   90554  d6 Qxd6
3   +3.49   00:00  146999  Qa4+ Bd7 Qa5 Nc2
4   +3.94   00:00  203813  Qa4+ Bd7 d6 cxd6 Qd1
5   +3.07   00:00  290045  Qa4+ Bd7 Qb4 Qxb4 cxb4 Nc2
6   +3.52   00:00  366454  Qa4+ Bd7 Qb4 Qxb4 cxb4 Bh4 Nc3 Ke7
7   +3.13   00:00  431253  Qa4+ Bd7 Qb4 Qxb4 cxb4 Bh4 Nc3 b5
8   +3.14   00:00  493525  Qa4+ Bd7 Qb4 Qxb4 cxb4 Bh4 Nc3 Ke7 g3 b5
9   +2.87   00:00  563154  Qa4+ Bd7 Qb4 Qxb4 cxb4 Bh4 Nc3 Ke7 g3 b5 gxh4 bxc4 Rg1 Rxh8 Rxg7+ Kf8
10   +2.39   00:00  715465  Qa4+ Bd7 Qb4 Qxb4 cxb4 Bh4 a4 Nc2 Ra2 Nxb4 Ra1 Ke7 g3 Nc2
11   +2.57   00:00  792997  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 d4 Rxh8 Re1 b5 Bf1 e4 Bg5 Nc2
12   +2.67   00:00  855533  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 Re1 Rxh8 d4 b5 Bf1 Nxd5 Rxe5+ Kd6 Bd3
13   +2.92   00:00  929676  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 d4 Rxh8 Na3 Kf8 Re1 exd4 Bg5 dxc3 bxc3
14   +3.19   00:00   1148K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 Na3 Rxh8 d4 b5 dxe5 Ng4+ Kg3 bxc4 Bg5+ Ke8 Nxc4
15   +3.21   00:00   1394K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 Na3 Rxh8 d4 Rf8 dxe5 Ng4+ Kg3 Nxe5 Bg5+ Kd6 Bf4 Rxf4 Kxf4
16   +2.79   00:00   3979K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 Na3 Rxh8 d3 Bg4+ Ke1 Nd6 Bg5+ Kf7 Kd2 b5 Nxb5 Nxb5 Bxb5 Rb8 c4 a6
17   +3.20   00:00   4251K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 Na3 Rxh8 d3 Bg4+ Ke1 Nd6 Bg5+ Kf7 Kf2 b5 Nxb5 Nxc4 dxc4 Nc2 Rc1 Bf5 Nxc7 Rc8
18   +3.34   00:00   5991K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Rxh8 Na3 Ne4+ Ke2 Nxa1 d3 Bg4+ Ke1 Nd6 Bg5+ Kf7 Kf2 h6 Bd2 b5 Nxb5 Nxc4 dxc4
19   +3.41   00:00   8771K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 Na3 Rxh8 d3 Bg4+ Ke1 Nd6 Bg5+ Kf7 Kf2 h6 Bd2 b5 Nxb5 Nxc4 dxc4 Nc2 Nxc7 Rc8 Nb5 Ke7 Rc1
20   +3.54   00:00  12068K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 Na3 Rxh8 d3 Bg4+ Ke1 Nd6 Bg5+ Kf7 Kf2 b5 Nxb5 Nxb5 Bxb5 Rb8 Bc4 Kg6 Be7 Nc2 Rb1 Bf5 Bc5 h5 b3 Ra8 Rc1
21   +3.55   00:01  16896K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 Na3 Rxh8 d3 Bg4+ Ke1 Nf6 Bg5 Rb8 d6+ cxd6 Bd5 b5 Kd2 b4 cxb4 Rxb4 Kc3 Rd4 Be4 h6 Bxf6+ gxf6 Rxa1 f5 Nb5 fxe4 Nxd4 exd4+ Kxd4 exd3 Kxd3 Be6 a4 Bb3 Re1+ Kf6
22   +3.73   00:01  25477K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Rxh8 d4 Rf8 Bg5 Ke8 Nd2 Ne4+ Kg1 Nxd2 Bxd2 Nxa1 dxe5 Bf5 Bb5+ Bd7 Be2 Bf5 Bf3 Nc2 Kf2 Bd3 Kg3 Rf5
23   +3.83   00:02  36658K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 d4 Rxh8 Bg5 exd4 Na3 Rf8 Rxa1 h6 Bxf6+ Rxf6+ Kg1 dxc3 Re1+ Kd8 bxc3 c6 Nc2 b5 Bb3 c5 c4 b4 Ne3
24   +3.77   00:03  48529K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Rxh8 d4 Nxa1 Na3 exd4 Bg5 Rf8 Rxa1 h6 Re1+ Kd8 Bxf6+ Rxf6+ Kg1 dxc3 bxc3 Rf4 Rb1 b6 Rf1 Rxf1+ Bxf1 Ke7 Nb5 Bxb5 Bxb5 Kd6 c4 Kc5 Kf2 g5 Kf3
25   +3.65   00:05  71879K  Qa4+ Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 Na3 Rxh8 d3 Bg4+ Ke1 Nd6 Bg5+ Kd7 Kd2 b5 Nxb5 Rb8 Nxd6 Rxb2+ Kc1 Rc2+ Kb1 Kxd6 h3 Bh5 Bc1 Be2 Ba3+ Kd7 Kxa1 e4 Bb3 exd3 Bb4 Kc8 Bxc2
26   -2.85   00:15 192733K  Qa4+ Nd7 Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Bd1+ Kc3 Bxa4 b3 Nb6 d4 Nxc4 Kxc4 Qe4 Kc3 Bb5 Rd1 Rxh8 a4 Ba6 Rd2 Re8 Ba3 Qxd5 Kb2 Re2 Rxe2 Bxe2 Bc5 Bd3 Nc3
27   -5.20   00:42 521410K  Qa4+ Nd7 Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb5 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 Rd1 Bxg2 d4 Rxh8 Na3 Re8 Rd3 Be4 Rd2 Rf8 Nb5 Qh5 a4 Rf3+ Kb2 Bd3 Nc3 Bg6 Nb5 Qd5 Ra3 Qf5 Nc3 Qa5 Na2
28   -5.96   01:34   1166M  d6 Qd7 cxd4 Bxd1 Nc3 Bc2 Nb5 O-O-O Kxf2 Ne4+ Kg1 Nxd6 Na3 Nxc4 Nxc2 exd4 d3 Ne5 Bd2 Rxh8 Rf1 Nxd3 h4 Nxb2 Rh3 d3 Ne3 Re8 Rf2 Qd4 Rg3 c6
29   -6.70   02:54   2173M  Qa4+ Nd7 Kxf2 Qh4+ g3 Qf6+ Ke1 Qf5 Rf1 Nc2+ Qxc2 Qxc2 Na3 Qe4+ Kf2 Bh3 Re1 Qg2+ Ke3 Qxh2 d4 O-O-O Re2 Qxg3+ Kd2 Rxh8 Re3 Qf2+ Re2 Qf6 Kc2 Bf5+ Kb3 exd4 cxd4 a6 Be3 Qb6+ Ka4 Qd6 Kb3 b5 Rf1 bxc4+ Nxc4 Qxd5 Kc3 Bg6 b3 Nb6 Nxb6+ cxb6
30   -6.76   03:09   2368M  Qa4+ Nd7 Kxf2 Qh4+ g3 Qf6+ Ke1 Qf5 Rf1 Nc2+ Qxc2 Qxc2 Na3 Qe4+ Kf2 Bh3 Re1 Qg2+ Ke3 Qxh2 d4 O-O-O Re2 Qxg3+ Kd2 Rxh8 Re3 Qf2+ Re2 Qf6 Kc2 Bf5+ Kb3 exd4 cxd4 a6 Be3 Qb6+ Ka4 Qd6 Rc1 Be4 Kb3 b5 Rc3 Nb6 Bd3 Bxd3 Rxd3 Nxd5 Kc2 Nb4+ Kd2 Nxd3
Nodes: 2368635725
Nodes/second: 12496165
Best move: Qa4+
Ponder move: Nd7

Searching:
r3k2N/ppp1q1pp/5n2/3Pp3/Q1Bn2b1/2P5/PP1P1bPP/RNB2K1R b q - 0 1

infinite: 0 time: 0 increment: 0 moves to go: 0

1   -1.89   00:00   27859  Bd7
2   -2.34   00:00   95725  Bd7 Qb4
3   -3.23   00:00  215800  Bd7 d6 Qxd6
4   -2.60   00:00  279592  Bd7 Qb4 Qxb4 cxb4
5   -2.66   00:00  355721  Bd7 Qb4 Qxb4 cxb4 Bh4
6   -2.47   00:00  478155  Bd7 Qb4 Qxb4 cxb4 Bh4 Na3
7   -2.58   00:00  559909  Bd7 Qb4 Qxb4 cxb4 Bh4 Na3 b5
8   -3.19   00:00  629831  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 Na3 Rxh8
9   -2.89   00:00  705313  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 Na3 Rxh8 d4 Rf8
10   -2.81   00:00  820426  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 Na3 Rxh8 d3 Kd6 Bg5
11   -3.02   00:00  913595  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 Na3 Ne4+ Ke2 Bg4+ Ke3 Nd6 d3 Rxh8 Kf2
12   -3.17   00:00   1021K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 d4 b5 Be2 exd4 Bg5 b4 Bd3 Rxh8 cxb4
13   -3.37   00:00   1350K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 d4 Rxh8 Bg5 exd4 Na3 Rf8 Re1+ Kf7 Bxf6 Kxf6
14   -3.45   00:00   1655K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 d4 Rxh8 Bg5 exd4 Na3 dxc3 Bxf6+ Kxf6 bxc3 g6 Rxa1
15   -3.37   00:00   1760K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 d4 Rxh8 Bg5 exd4 Na3 Rf8 Re1+ Kf7 Bxf6 Kxf6 Rxa1 Ke7+ Kg3 dxc3
16   -3.42   00:00   2454K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Rxh8 d4 Nxa1 Bg5 exd4 Bxf6+ Kxf6 Na3 b5 Be2 Rf8 Rxa1 dxc3 bxc3 a6 Rb1 Re8 Bf3 Re5
17   -3.58   00:00   2914K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 d4 Rxh8 Bg5 exd4 Na3 Rf8 cxd4 h6 Re1+ Kd8 Bxf6+ Rxf6+ Ke3 Rg6 g3
18   -3.01   00:00   4592K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Kf3 Nd6 d3 Rf8+ Kg3 Nf5+ Kh3 Nfe3+ g4 Rf3+ Kh4 Ng2+ Kg5 Rf6 d6+ cxd6 Bd5 h6+ Kh5 Be8+ Nf7 Bxf7+ Bxf7 Kxf7
19   -3.20   00:00   6144K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 d4 Bg4+ Ke3 Nd6 Bd3 e4 Bxe4 Nxe4 Kxe4 Rf8 Bg5+ Kd7 Kd3 Rxh8 Na3 Bf5+ Kd2 Be4 Rxa1 Bxd5 Re1 Be6 Bf4
20   -3.26   00:00   7326K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 d4 Bg4+ Ke3 Nd6 Bd3 e4 Bxe4 Rxh8 Na3 Kd7 Bd3 Bh5 Bd2 Re8+ Kf4 Rf8+ Kg3 Bg6 Bxg6 hxg6 Be3
21   -3.40   00:00   9888K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 d4 Bg4+ Ke3 Nd6 Bd3 e4 Bxe4 Nxe4 Kxe4 Rf8 Bg5+ Kd7 Na3 Bf5+ Ke3 Nc2+ Nxc2 Bxc2 Rc1 Bf5 Rf1 Re8+ Kd2 Be4 Rf7+ Kd6
22   -3.32   00:01  15173K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 d4 exd4 Kf3 Nd6 Bg5+ Kf8 Nd2 Kg8 Rxa1 Rf8+ Kg3 dxc3 bxc3 Rf5 Bf4 Nxc4 Nxc4 Rxd5 Ne5 Be6 c4 Rd4 Nhf7 Bxf7 Nxf7 Kxf7 Rc1 Kf6 Bxc7
23   -3.68   00:02  39177K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Ne4+ Ke2 Nxa1 Na3 Rxh8 d3 Bg4+ Ke1 Nd6 Bg5+ Kf7 Kf2 Kg6 Be7 b5 Nxb5 Nxc4 dxc4 Nc2 Rc1 Kf7 Bg5 h6 Be3 Bf5 Nxc7 Rd8 Bxa7 Rd7
24   -3.84   00:04  64515K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Rxh8 d4 exd4 Bg5 Nxa1 Na3 Rf8 Rxa1 h6 Re1+ Kd8 Bxf6+ Rxf6+ Kg1 dxc3 bxc3 Rf4 Rb1 b6 Bb3 a5 Bc2 Bf5 Rf1 Rxf1+ Kxf1 Bxc2 Nxc2 Ke7 Kf2 Kd6 Ne3
25   -3.85   00:06  85657K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Nxa1 b3 Rxh8 Bb2 b5 Be2 Nxd5 Bxa1 Rf8+ Bf3 g5 Kg3 Nf6 Bb2 Kf7 h3 Kg6 Ba3 Rd8 Be7 Re8 Bc5 e4 Bd1 Nh5+ Kh2 Nf4 Bxa7
26   -3.86   00:08 111864K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Rxh8 d4 Nxa1 Bg5 exd4 Na3 Rf8 Rxa1 h6 Re1+ Kd8 Bxf6+ Rxf6+ Kg1 dxc3 bxc3 c6 Nc2 c5 Bd3 b5 Re5 a5 Ne3 b4 cxb4 cxb4 Re4
27   -3.88   00:10 141312K  Bd7 Qa3 Nc2 Qxe7+ Kxe7 Kxf2 Rxh8 d4 exd4 Bg5 Nxa1 Na3 Rf8 Rxa1 h6 Bxf6+ Rxf6+ Kg1 dxc3 Re1+ Kd6 bxc3 a6 Bb3 b5 c4 c6 dxc6 Bxc6 cxb5 axb5 Nc2 g6 Ne3 Kc7 Ng4 Rf4 Nxh6
28   +3.61   00:27 349212K  Nd7 Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 cxb6 b3 Bxd5 Rd1 Rxh8 d4 Bxg2 Kb2 Bf3 Rd2 Rd8 Nc3 Be4 Nxe4 Qxe4 Rc2+ Kb8 Bd2 Rxd4
29   +4.27   00:35 442432K  Nd7 Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb4 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Rxh8 g3 Qf6 Rd1 Re8 Na3 c5 Nc2 Be4 Bf4 g5 Bd2 Bxc2 Kxc2 Re2 dxc5 bxc5 Rac1 Rxh2
30   +5.38   00:48 613753K  Nd7 Kxf2 Qh4+ Ke3 O-O-O cxd4 exd4+ Kxd4 Nb6 Qb3 Be2+ Kc3 Bxc4 Qxb6 axb6 b3 Bxd5 d4 Bxg2 Rd1 Rxh8 Na3 Re8 Rd2 Qxh2 Kb2 Qg3 Nb5 Bf1 a4 Bxb5 axb5 Re3 Ra3 Rf3 Rc2 Kd7 Bd2 Rf2 Bb4 Rxc2+ Kxc2 Qf2+ Kd3 Qf3+ Kd2 Qe4
Nodes: 613808805
Nodes/second: 12594050
Best move: Nd7
Ponder move: Kxf2

Searching:
r3k2N/pp1nq1pp/3p4/4p3/Q1Bn2b1/2P5/PP1P1bPP/RNB2K1R w q - 0 1

infinite: 0 time: 0 increment: 0 moves to go: 0

1   +8.40   00:00   29614  Kxf2
2   +7.27   00:00  101240  Kxf2 b5
3   +7.86   00:00  192049  Kxf2 b5 Bxb5 Qf8+ Kg1 Nxb5 Qxg4 Qxh8
4   +7.62   00:00  257202  Kxf2 b5 Bxb5 Qf8+ Ke1 Nxb5
5   +5.88   00:00  325162  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1
6   +5.88   00:00  386727  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ g3
7   +5.40   00:00  443256  cxd4 Bxd4 Ke1 Qf6 Rf1 Qh4+ g3 Qxh2
8   +4.51   00:00  522466  Kxf2 Qh4+ g3 Qf6+ Ke1 Nf3+ Kf1 Nd4+ Kg1 Ne2+ Bxe2 Bxe2
9   +4.52   00:00  617927  Kxf2 Qh4+ g3 Qf6+ Kg2 Bf3+ Kg1 Ne2+ Bxe2 Bxe2 h4 Qf3 Kh2
10   +3.90   00:00  688272  cxd4 Bxd4 Ke1 Qf6 Rf1 Qh4+ g3 Qxh2 Qa3 Nc5 Nf7 Ne4 Bb5+ Ke7
11   +4.93   00:00  776507  Kxf2 Qh4+ Kf1 Ne2 d4 Nxc1 Nd2 O-O-O Rxc1 Rxh8 Ne4 Qh6 Re1
12   +4.48   00:00   1096K  Kxf2 Qh4+ Kf1 Ne2 d4 Nxc1 Nd2 Qf6+ Kg1 Qg5 Nf1 Bf3 g3 Ne2+ Bxe2 Bxe2 Re1 Bf3
13   +3.65   00:00   1364K  cxd4 Bxd4 Ke1 Qf6 Rf1 Qh4+ g3 Qxh2 Qa3 Nc5 b4 Ne4 Bb5+ Bd7 Bxd7+ Kxd7 Qf3 Qxg3+ Qxg3 Nxg3
14   +0.54   00:00   1819K  cxd4 Bxd4 Ke1 Qf6 Rf1 Qh4+ g3 Qxh2 Qa3 Nc5 b4 Ne4 Qa4+ Bd7 Qa5 Nxg3 Qd5 Nxf1 Qg8+ Ke7 Qxg7+ Kd8 Nc3 Qh4+ Kd1
15   +0.39   00:00   1965K  cxd4 Bxd4 Ke1 Qf6 Rf1 Qh4+ g3 Qxh2 Qa3 Nc5 b4 Ne4 Qa4+ Bd7 Qa5 Nxg3 Qd5 Nxf1 Qf7+ Kd8 Bxf1 Kc7
16   +0.00   00:00   2365K  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ Kf1
17   +0.00   00:00   2442K  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ Kf1
18   +0.00   00:00   2512K  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ Kf1
19   +0.00   00:00   2699K  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ Kf1
20   +0.00   00:00   2848K  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ Kf1
21   +0.00   00:00   3010K  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ Kf1
22   +0.00   00:00   3802K  Kxf2 Qh4+ Kf1 Ne2 Bf7+ Ke7 h3 Ng3+ Kg1 Ne2+ Kf1
23   +0.00   00:00   5019K  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ Kf1
24   +0.00   00:00   5598K  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ Kf1
25   +0.00   00:00   7876K  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ Kf1
26   +0.00   00:00  10554K  Kxf2 Qh4+ Kf1 Ne2 Qc2 Qf6+ Ke1 Qh4+ Kf1
27   -3.60   00:18 230642K  Nf7 Bh4 Kg1 Qf6 Nxd6+ Qxd6 g3 Bh3 Bf1 Bxf1 cxd4 Qd5 Kxf1 Qxh1+ Ke2 Qxc1 dxe5 O-O-O Qd4 Nxe5 Qc3+ Qxc3 Nxc3 Bg5 Ne4 Bh6 Rc1+ Kb8 Rc3 Rd4 d3 Nxd3 Rxd3 Rxe4+ Kf3 Re8 Rc3
28   -4.47   00:30 375700K  Kxf2 Qh4+ Kf1 Ke7 cxd4 Rxh8 h3 Rf8+ Kg1 Qf2+ Kh2 Bxh3 Bd5 Rf4 Qb3 Bf5 Qg3 Rh4+ Qxh4+ Qxh4+ Kg1 Qxd4+ Kh2 Qxd5 Nc3 Qd4 d3 Nf6 Bg5 Bxd3 Rad1 Ke6 Rhf1 Ng4+ Kg3 h6 Bc1 Nf6 Rxf6+ Kxf6 Nb5 Qc4 Nxd6 Qc2 Rd2 Qxc1 Rxd3 Qxb2
29   -4.97   00:44 546911K  Kxf2 Qh4+ Kf1 Ke7 cxd4 Rxh8 h3 Rf8+ Kg1 Qf2+ Kh2 Bxh3 Bd5 Rf4 Qb3 Bf5 Qg3 Rh4+ Qxh4+ Qxh4+ Kg1 Qxd4+ Kh2 Qxd5 Nc3 Qd4 Nd1 Nf6 Ne3 Qh4+ Kg1 Qe1+ Kh2 Qf2 d4 Be4 Rf1 Ng4+ Kh3 Qe2 Nxg4 Bxg2+ Kh4 Bxf1 Be3 e4 Bf2 Bg2
30   -4.98   00:53 656579K  Kxf2 Qh4+ Kf1 Ke7 cxd4 Rxh8 h3 Rf8+ Kg1 Qf2+ Kh2 Bxh3 Bd5 Rf4 Qb3 Bf5 Qg3 Rh4+ Qxh4+ Qxh4+ Kg1 Qxd4+ Kh2 Qxd5 d3 Nf6 Bg5 Bxd3 Re1 Kd7 Bxf6 gxf6 Nc3 Qd4 Rad1 d5 Kh3 Bf5+ Kh2 Qh4+ Kg1 d4 Rf1 Be6 Ne2 Bxa2 Rf3 Be6
Nodes: 656633138
Nodes/second: 12294659
Best move: Kxf2
Ponder move: Qh4+
Parent - By Lazy Frank (****) [gb] Date 2018-05-12 06:38 Edited 2018-05-12 08:38
Hello, Daniel!

How much positions you have started with 5. Bxf7+ Ke7 6. Bc4 ... ?

P.S. Btw, TCEC 11 Traxler (game 55):

http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?pid=579115#pid579115

Sad, even after 20. f4 (!) black can draw 20... Qh6 (!).

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 5. Bxf7+ Ke7 6. Bb3 d6 7. d3 Qe8 8. Nf3 Bg4 9. Be3 Qg6 10. Nbd2 Raf8 11. Bxc5 dxc5 12. h3 Bxf3 13. Qxf3 Nd4 14. Qe3 Qxg2 15. O-O-O Ne8
16. Rdf1 Qg6 17. Rhg1 Qf6 18. c3 Nxb3+ 19. axb3 b6 20. f4 Qh6

4nr1r/p1p1k1pp/1p5q/2p1p3/4PP2/1PPPQ2P/1P1N4/2K2RR1 w - - 1 21


Just confirms how bad was 6. Bb3, third best move.
Parent - - By MrKris (*) Date 2018-10-22 21:07
G/90' AMD Phenom II X6 Syzygy 6
[Event "Frank-Traxler"]
[Site "Arena"]
[Date "2018.10.22"]
[Round "1"]
[White "S_XPrO.061018"]
[Black "CorChess2.6-151018"]
[Result "1-0"]
[BlackElo "2200"]
[ECO "C57"]
[Opening "Two Knights"]
[Time "07:25:41"]
[Variation "Traxler, 5.Bxf7+"]
[WhiteElo "2200"]
[TimeControl "5400+0"]
[Termination "adjudication"]
[PlyCount "120"]
[WhiteType "program"]
[BlackType "program"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 5. Bxf7+ Ke7 6. Bc4 Qe8 7. Nc3 h6
8. Nf3 d6 9. O-O Rf8 10. a4 Kd8 11. Be2 Nd4 12. Nxd4 exd4 13. Na2 Qxa4 14.
d3 a5 {-0.97/32 168} 15. Bd2 {+1.77/32 177} Be6 {-1.16/36 724} 16. Nb4
{+1.70/32 88 ; as in LF} Qb5 {-0.91/33 50} 17. c4 {+1.61/33 124} dxc3 {-1.06/33 108}
18. bxc3 {+1.71/33 117} Bxb4 {-1.08/34 79} 19. cxb4 {+1.87/31 60} a4
{-1.03/36 95} 20. Bc3 {+1.95/30 70} a3 {-1.34/29 164} 21. Qd2 {+1.82/31
137} c6 {-1.32/29 114} 22. h3 {+2.15/30 95} Re8 {-1.16/28 199} 23. f4
{+2.36/30 179} a2 {-1.85/33 425} 24. Kh2 {+2.36/32 297} Kd7 {-1.68/29 78}
25. Rf3 {+2.45/29 66} Kc7 {-1.69/30 91} 26. Re3 {+2.46/30 103} Re7
{-2.05/28 84} 27. Rg3 {+2.66/31 100} Ne8 {-1.88/31 107} 28. e5 {+2.53/34
316} Qb6 {-1.82/34 149} 29. d4 {+2.61/31 69} Bd5 {-1.93/28 86} 30. Bh5
{+2.75/31 60} Ra3 {-2.05/30 217} 31. Qc1 {+2.94/33 179} Ra8 {-2.08/32 88}
32. f5 {+2.94/33 137} Qb5 {-2.18/32 137} 33. Qd2 {+2.57/32 129} Ra3
{-2.42/31 283} 34. Qb2 {+3.20/33 166} Rb3 {-2.61/31 83} 35. Qc2 {+3.38/34
46} Ra3 {-2.36/30 23} 36. Be1 {+3.63/33 117} Rxg3 {-3.08/35 159} 37. Bxg3
{+3.82/34 26} Qxb4 {-3.14/34 37} 38. Rxa2 {+3.97/37 34} Qxd4 {-3.66/36 170}
39. Ra8 {+4.10/37 46} Rxe5 {-3.60/34 22} 40. Rxe8 {+4.24/37 55} Rxe8
{-2.48/30 20} 41. Bxe8 {+4.33/36 36} c5 {-3.57/37 259} 42. Bh5 {+4.54/38
81} b5 {-3.78/34 60} 43. Qe2 {+4.78/37 35} Qe4 {-3.16/31 12} 44. Qb2
{+4.87/40 44} Kc6 {-3.45/38 57} 45. Bf3 {+4.99/38 37} Qxf5 {-3.39/39 34}
46. Be2 {+5.10/40 39} Bc4 {-3.38/40 17} 47. Bf3+ {+5.18/40 71} Bd5
{-3.52/42 73} 48. Be2 {+5.34/37 21} Bc4 {-4.05/39 46} 49. Bg4 {+5.58/34 31}
Qf8 {-4.07/40 71} 50. Qd2 {+5.62/37 65} Qd8 {-4.40/36 66} 51. Qc3 {+5.85/35
34} Qe7 {-4.23/31 39} 52. Qa3 {+6.20/32 29} Kb6 {-4.88/34 52} 53. Qa8
{+6.41/31 26} g6 {-5.49/35 90} 54. Bf3 {+6.92/36 97} d5 {-6.04/32 49} 55.
Qg8 {+7.51/34 79} b4 {-5.77/30 14} 56. Qxg6+ {+7.71/29 19} Kb5 {-6.75/31
37} 57. Qxh6 {+8.00/29 32} b3 {-6.62/30 24} 58. Qh8 {+8.27/30 25} Qb7
{-7.91/36 103} 59. h4 {+8.52/29 22} Qe7 {-8.34/29 39} 60. h5 {+9.01/31 28}
Qe6 {-9.85/29 40  Arena Adjudication} 1-0 [Event "Frank-Traxler"]
[Site "Arena"]
[Date "2018.10.22"]
[Round "2"]
[White "CorChess2.6-151018"]
[Black "S_XPrO.061018"]
[Result "1-0"]
[BlackElo "2200"]
[ECO "C57"]
[Opening "Two Knights"]
[Time "09:56:45"]
[Variation "Traxler, 5.Bxf7+"]
[WhiteElo "2200"]
[TimeControl "5400+0"]
[Termination "adjudication"]
[PlyCount "94"]
[WhiteType "program"]
[BlackType "program"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 5. Bxf7+ Ke7 6. Bc4 Qe8 7. Nc3 h6
8. Nf3 d6 9. O-O Rf8 10. a4 Kd8 11. Be2 Nd4 12. Nxd4 exd4 13. Na2 Qxa4 14.
d3 a5 {-1.21/34 328} 15. Bd2 {+1.18/31 202} Qe8 {-1.01/29 63} 16. c3
{+1.50/29 82 ; LF has 16.Bf3} Be6 {-1.14/32 251} 17. Nb4 {+1.59/31 92} a4 {-1.17/31 39} 18.
c4 {+1.35/33 115} Ke7 {-1.12/34 71} 19. f4 {+1.77/29 46} Nxe4 {-1.03/33
129} 20. Bh5 {+2.04/30 44} g6 {-2.41/37 282} 21. Bg4 {+2.19/33 59} Nc3
{-2.21/38 144} 22. Qf3 {+2.83/30 47} Bxg4 {-2.69/35 138} 23. Qxg4 {+2.79/32
80} Kd8 {-2.35/33 53} 24. Rae1 {+2.98/32 133} Qf7 {-2.57/35 115} 25. Nc2
{+2.85/33 119} a3 {-2.57/35 57} 26. bxc3 {+2.95/33 91} dxc3+ {-2.58/33 92}
27. Be3 {+3.06/33 70} Bxe3+ {-2.73/35 109} 28. Nxe3 {+3.73/33 184} Re8
{-3.40/35 311} 29. f5 {+3.95/30 39} gxf5 {-3.61/37 75} 30. Qd4 {+4.03/33
106} b6 {-4.01/39 340} 31. Qxc3 {+4.24/35 51} a2 {-4.69/40 278} 32. Nd5
{+4.52/37 67} Rxe1 {-4.76/33 36} 33. Rxe1 {+4.61/36 53} Kc8 {-4.86/39 159}
34. Qa1 {+4.69/37 62} Qd7 {-5.12/38 202} 35. Re2 {+5.02/36 141} Qa4
{-5.16/36 92} 36. Nc3 {+5.02/34 98} Qb4 {-5.12/30 31} 37. Re8+ {+5.21/31
115} Kb7 {-5.26/38 190} 38. Rxa8 {+5.25/32 80} Kxa8 {-5.25/32 29} 39. Qxa2+
{+5.21/31 73} Kb7 {-5.26/34 129} 40. Qd2 {+5.39/31 114} h5 {-5.35/32 78}
41. Qc1 {+5.61/31 71} Qb3 {-5.41/30 98} 42. g3 {+5.81/29 50} c6 {-5.39/28
32} 43. Kf2 {+6.20/30 59} b5 {-5.89/31 69} 44. cxb5 {+6.82/30 86} cxb5
{-6.50/33 138} 45. Qd2 {+7.07/28 45} Qb4 {-7.88/32 312} 46. Ke3 {+7.41/29
75} Qb3 {-8.02/31 120} 47. Qg2+ {+8.93/30 51} Kb6 {-8.61/30 58  Arena
Adjudication} 1-0 Not shown:  CorChess 1-0 Ethereal and Ethereal 1/2-1/2 CorChess.
Attachment: Frank-Traxler.pgn - 4 games (10k)
Parent - - By h1a8 (***) [us] Date 2018-11-21 14:28
5. Nxf7 wins.
Facts!
Parent - By Venator (Silver) [nl] Date 2018-11-24 07:28
5.Nxf7? throws away the advantage, leads to a forced draw. Fact :wink:
Parent - By Lazy Frank (****) [gb] Date 2018-11-24 11:12
Can you provide your facts? :wink:
Parent - - By user923005 (****) [us] Date 2018-05-16 18:20
Computers have violent disagreements analyzing Traxler positions.

For each of these positions, the number that follows the position is the standard deviation of the evaluation of chess engines for the position.  Many are rather comical.

2k2r1N/pppn2pp/8/3Ppq2/Q1BP2b1/7P/PP1P2P1/RNB3KR b - -
  18408.2151649426
2k2r1N/pppn2pp/8/3Pp3/Q1BP2b1/7P/PP1P1qP1/RNB3KR w - -
  17454.1209307907
r3k2N/p1pb2pp/2p5/4p3/3q4/8/PPPPK2P/RNBQ3R b q -
  17375.4580889253
r3k2N/p1p3pp/2p5/4p3/3q2b1/8/PPPPK2P/RNBQ3R w q -
  17338.610584473
2k2r1N/ppp3pp/8/3Pp3/3nn2q/N3Q1P1/PPPP3P/R1B1K2R b - -
  16981.7844969249
2k2r1N/pppn2pp/8/3Ppq2/Q1BP2b1/8/PP1P2PP/RNB3KR w - -
  16683.9008357109
2kr3N/pppn2pp/8/3Ppq2/Q1BP2b1/8/PP1P2PP/RNB3KR b - -
  16526.5666845563
2k2r1N/pppn2pp/8/3Pp3/Q1BP2b1/7P/PP1P1qPK/RNB4R b - -
  16239.2656657755
2k2r1N/ppp3pp/8/3Pp3/3nn2q/N3Q3/PPPP2PP/R1B1K2R w - -
  16074.2882444812
2k2r1N/pppn2pp/8/3Pp3/Q1BP4/7b/PP1P1qPK/RNB4R w - -
  15931.0769460251
2k2r1N/pppn3p/8/3Pp1p1/Q1BP4/7K/PP1P1qP1/RNB4R w - -
  15385.9251732191
r3k2N/p2n2pp/3p4/1B2p3/Q2n2bq/2P5/PP1P2PP/RNB2K1R b q -
  14619.2999029836
2k2r1N/ppp1q1pp/8/3Pp3/3nn3/N3Q3/PPPP2PP/R1B1K2R b - -
  13029.7911981223
r6N/p2nk1pp/3p4/1B2p3/Q2n2bq/2P5/PP1P2PP/RNB2K1R w - -
  8591.32804133599
r3k2N/p1p3pp/2p5/4p3/3q4/3P4/PPb4P/RNB1K2R w q -
  6332.4701260389
r3k2r/p1p1qNpp/2p5/3pp3/8/7b/PPPPQ2P/RNB4K b kq -
  5362.21245665259
r3k2N/p1p3pp/2p5/4p3/3q4/3P4/PPP4P/RNBbK2R b q -
  2690.00568331316
r1b1kr2/pppp1Npp/8/3Bp3/2P2n2/3q4/PP1P2K1/RNBQ3R w q -
  304.686049406187
r3k2N/pp2q1pp/3p1n2/4p3/2Bn2b1/2P5/PP1P1bPP/RNBQ1K1R w q -
  288.975215886805
r3k2N/ppp1q1pp/5n2/3Pp3/Q1Bn2b1/2P5/PP1P1bPP/RNB2K1R b q -
  283.65652645409
r1b1k2N/pp2q1pp/3p1n2/4p3/2Bn4/2P5/PP1P1bPP/RNBQ1K1R b q -
  283.206033148198
r3k2N/pp2q1pp/3p1n2/4p3/Q1Bn2b1/2P5/PP1P1bPP/RNB2K1R b q -
  256.598376581172
r1b1kr2/pppp1Npp/8/3Bp3/2P5/3q4/PP1Pn1K1/RNBQ3R b q -
  252.521147508453
r3k2N/pppnq1pp/8/3Pp3/Q1Bn2b1/2P5/PP1P1bPP/RNB2K1R w q -
  243.298239678598
r3k2N/pppn2pp/8/3Pp3/Q1Bn2bq/2P1K3/PP1P2PP/RNB4R b q -
  240.595716176606

Attachment:
Some Traxler positions analyzed (I am not done, but here is what I have so far).
Attachment: traxler-ana.epd - Analyzed Traxler positions, only the deepest analysis is included. Analysis is not yet complete. (132k)
Parent - - By Lazy Frank (****) [gb] Date 2018-05-16 20:00
Daniel, it's very good you have so much Traxler positions.
Just i think - if we need found a refutation of Traxler, then wanna look only for good (very good) moves from both sides, not extend a moves tree bigger than Universe.
Parent - - By user923005 (****) [us] Date 2018-05-16 23:11
The move chains that go all the way to checkmate are from famous games by famous players.
Parent - - By Lazy Frank (****) [gb] Date 2018-05-17 04:27
I can't get what is common in between famous players and refutation, even more today we have powerful tools.
Parent - By user923005 (****) [us] Date 2018-05-17 07:18 Upvotes 1
Also, some of the 12 move mates are really, really beautiful.
Look at them.  I promise you won't be disappointed.
There is surprise in the box.
Well, maybe not for you, but there was for me.
I am very glad that I analyzed them.
I am even more glad that I scrutinized them after.
Parent - By Master Om (Bronze) [in] Date 2018-05-18 17:22
Hi Why dont u try 5...Nd5!? one ? its intresting too.
Parent - - By Vegan (****) [ca] Date 2018-10-01 05:17
5 Nxf7 is more widely played as the fork is so tempting
Parent - By Lazy Frank (****) [gb] Date 2018-10-01 18:17
The same about 6. Bb3 or Bd5 after 5. Bxf7, Bc4 played rarely.
Parent - - By Master Om (Bronze) [in] Date 2018-10-03 11:13
It does not lead to what white thinks it should be.
Parent - By Vegan (****) [ca] Date 2018-10-09 04:28
all i know is that wild gameplay ensues with 2 knights defense which is probably the reason it's not played much anymore

all i know is that I spent some time looking at some lines and it is hard to be sure what lines are best even with god's hand helping
- - By Lazy Frank (****) [gb] Date 2018-05-11 05:31 Edited 2018-05-11 06:01 Upvotes 1
Behind scenes (moves description):

5. Bxf7+

Nxf7 draws, only one logical continuation.

6. Bc4

On square b3 bishop is paired with black knight Nc6 (one move distance - Nd4/Na5).
On square d5 bishop is paired with black knight Nf6 (directly),
knight Nc6 (one move distance Nb4/Ne7) and counter paired with knight Nc6 (Bxc6).
On square c4 bishop is paired with black knight Nc6 (one move distance Na5).

Black by pawn f7 sacrifice prepare attack white king pawn defender f2.
To defend pawn f2 white Ng5 come back to Nf3 (wall against rook f8).
Bc4 consequently prepare (Be2) to defend Nf3 (against Bg4).

But most important advantage of Bc4 move - black can't play d6.
If black plays d6, then white answers Nc3.

7. Nc3

Continue disable for black successful play d6 (fails to Nd5+).
Queen side development.

8. Nf3

Direct threat.

9. 0-0

King safety (finally diagonal c8-h3 is opened for black LSB).
No time stay in center and long castle request 3 more tempo's.

10. a4

Queen side development.
Do not allow play Kf7.
Keep flexible configuration pd3+pe4+Bc4/pd3+pe4+Be2.

11. Be2

Defend Nf3 and prepare advance c-pawn.

12. Nxd4

Avoid of pawn setup white d3+e4 vs black d6+e5.

13. Na2

Pawn e4 is much much more important than a4.

14. d3

Protect pawn e4.
Setup d3+e4 now works, black pawn structure was damaged before.

15. Bd2

Protect knight a2.
Development.
Parent - - By Antares (****) [de] Date 2018-05-11 08:48

> 6. Bc4
>
> On square b3 bishop is paired with black knight Nc6 (one move distance - Nd4/Na5).
> On square d5 bishop is paired with black knight Nf6 (directly),
> knight Nc6 (one move distance Nb4/Ne7) and counter paired with knight Nc6 (Bxc6).
> On square c4 bishop is paired with black knight Nc6 (one move distance Na5).


If [corr-]chess-analysis would be just so simply-straightforward! :lol: Pretty sure Bd5 is good as well...
Parent - By Lazy Frank (****) [gb] Date 2018-05-11 09:01 Edited 2018-05-11 09:05
Ok. For me Be2 and not allow d6 is enough. :wink:
After white Bd5 black plays Rf8 and then d6, typical setup.
Parent - - By Lazy Frank (****) [gb] Date 2018-05-11 19:15 Edited 2018-05-11 19:33
By accident i found one test game:


[ECO "C44"]
[Opening "Scotch Gambit"]
[Variation "Anderssen (Paulsen) Counterattack"]
[PlyCount "30"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 5. Bxf7+ Ke7 6. Bd5 Rf8 7. O-O d6
8. c3 Bg4 9. Nf3 Qe8 10. d4 exd4 11. Bxc6 bxc6 12. cxd4 Bb6 13. e5 Ne4 14.
exd6+ Kd8 15. a4 Qh5


15... cxd6 loses, 15... Qh5 draw.
Parent - - By Antares (****) [de] Date 2018-05-11 19:38
8. h3 seems to be better, 8. Bxc6 bxc6 9. Nf3 Bg4 10. d3 (maybe 10. h3) a serious option.

After 8. c3 Bg4, 9. Qb3 can also be checked.
Parent - - By Lazy Frank (****) [gb] Date 2018-05-11 20:05 Upvotes 1
It's just test game, not pretend to high precision. :smile:
Parent - - By Antares (****) [de] Date 2018-05-11 20:35
Was just feeding you with a few quick ideas. :smile:
Parent - - By Lazy Frank (****) [gb] Date 2018-05-12 04:45 Edited 2018-05-12 05:03
Agree, game starts after white played 0-0 and black played d6.
Let's compare visual initial position (white to move, white already played 0-0, black already played d6):

First picture Bc4, second - Bd5:

Hmmm ... practically only by h6 white have corrected Nf3 and developed Nc3 (Bc4). :twisted:
Parent - - By Antares (****) [de] Date 2018-05-12 06:42
I agree - visually it looks better (and objectively most likely it will be!), yet in corr-chess you often also see it the other way: Ng5 is still an attacking piece, Bd5 gives still the possibility to double-pawn that knight (which is a good defender) and h6 is just a useful move for Black anyway. :smile:

Thats why serious analysis - what you currently do - is needed (but never underestimate some interesting sidelines, especially those of the other side! :wink:).
Parent - By Lazy Frank (****) [gb] Date 2018-05-12 06:55
That why in my line white call Nc6 to d4 and remove by pawn a4 sacrifice, but save Be2.
Parent - By Master Om (Bronze) [in] Date 2018-05-18 17:09
Awesomely put....
- By Lazy Frank (****) [gb] Date 2018-05-11 08:33
Mainline, sidelines:

Attachment: Traxler_Sidelines.pgn (5k)
- - By zaarcis (***) [lv] Date 2018-05-16 11:25
Seems legit. Few (ok, many) years ago I had the same idea to poke the Traxler with Bxf7+ and reached the same conclusion about the move Bc4.

Can I somehow join and help with this Traxler-refuting-activity? :)
Parent - - By Lazy Frank (****) [gb] Date 2018-05-16 20:03
Of course, you can share your ideas and moves here.
Parent - - By Antares (****) [de] Date 2018-05-17 08:10 Upvotes 1
zaarcis already scored an unbelieveable win in that line.
Parent - By zaarcis (***) [lv] Date 2018-05-17 21:10
:D Yes!
Parent - - By zaarcis (***) [lv] Date 2018-05-18 16:19
Ok, then I will explore variations with Bc4 and c3 (with following d4 or b4, if it's possible) and return a month or few later with results.
Parent - - By Antares (****) [de] Date 2018-05-18 16:39
You guys should play two games, that benefits your both's analysis. First game zaarcis plays Black vs. LF's approach, and second game LF's vs. that c3-d4/b4-idea.
Parent - - By Lazy Frank (****) [gb] Date 2018-05-18 16:49 Upvotes 1
Good idea!
Parent - - By zaarcis (***) [lv] Date 2018-05-18 19:31
I'm in. :)
Parent - - By Lazy Frank (****) [gb] Date 2018-05-19 11:33
:sad: I'm out, sorry, very short on time.
Parent - By zaarcis (***) [lv] Date 2018-05-19 15:55
Sure, that's completely okay.
- - By Lazy Frank (****) [gb] Date 2018-09-30 10:53 Upvotes 1

[Event "Traxler Refutation"]
[White "White"]
[Black "Black"]
[ECO "C50"]
[Opening "Giuoco Pianissimo"]
[Variation "Italian Four Knights, 5...d6 6.Be3"]
[PlyCount "43"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 5. Bxf7+ Ke7 6. Bc4 Qe8 7. Nc3 h6
8. Nf3 d6 9. O-O Rf8 10. a4 Kd8 11. Be2 Nd4 12. Nxd4 exd4 13. Na2 Qxa4 14.
d3 Be6 15. b3 Qd7 16. c4 dxc3 17. d4 c2 18. Qd3 Bb6 19. Be3 Ke7 20. Qxc2
Kf7 21. Nc3 Kg8 22. f3
Parent - - By user923005 (****) [us] Date 2018-10-04 22:05 Upvotes 1
I am analyzing various lines from the Traxler.
It will take a long time to go through the data, because I have 28,195 positions that need examination.

PGN from the original traxler games (or discussions of Traxler lines) is attached.
Attachment: trax.7z - trax.pgn is all the games and lines from the original data. TraxlerC.pgn is the lines to study. (342k)
Parent - - By Peter Grayson (****) [us] Date 2018-10-06 12:09
A fascinating study of a long standing question regarding the integrity of the Traxler. Out of interest, which engines are you using for the study?

Peter
Parent - - By user923005 (****) [us] Date 2018-10-08 19:00
First pass is SF, afterwards Houdini, Komodo and whatever else strikes my fancy.

There are tens of thousands of positions that need analyzed.  So my current pass is to eliminate those which are already clearly won for one side or the other.
Unfortunately, a shallow search is no good, since the Traxler is an opening with enormous reversals when analyzed.
Parent - - By zaarcis (***) [lv] Date 2018-10-08 21:30
Aren't the most reversals found in the Nxf7 variation? I can hardly imagine any reversal (except from "white wins" to "damn, that's a draw") after Bxf7+.
Parent - - By user923005 (****) [us] Date 2018-10-08 22:16 Upvotes 1
Don't know yet.
I have 28,257 positions to examine to depth.
I guess it will be a week before I have any sensible results.
Parent - By user923005 (****) [us] Date 2018-10-09 02:50
As an illustration of why the Traxler is so volatile, analyze the attached EPD record sets and watch the evaluation do amazing roller-coaster swoops.
Attachment: roller-coaster.7z - Yikes. (3k)
Parent - - By Venator (Silver) [za] Date 2018-10-07 05:56
5.Nxf7? is indeed a forced draw, the key move being 10... Qe7!.  As also played in game 56 of the TCEC 11 superfinal:

[Event "TCEC Season 11 - Superfinal"]
[Site "http://tcec.chessdom.com"]
[Date "2018.04.08"]
[Round "56"]
[White "Houdini 6.03"]
[Black "Stockfish 260318"]
[Result "1/2-1/2"]
[ECO "C57"]
[WhiteElo "3489"]
[BlackElo "3546"]
[PlyCount "100"]
[EventDate "2018.03.29"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 5. Nxf7 Bxf2+ 6. Kf1 Qe7 7. Nxh8 d5 8. exd5 Nd4 9. d6 Qxd6 10. Nf7 Qe7 11. d3 Bg4 12. Qd2 Bh4 13. Nc3 b5 14. h3 bxc4 15. hxg4 Qxf7 16. Kg1 g5 17. Rxh4 gxh4 18. Qf2 Nxg4 19. Qxh4 h5 20. Bd2 Qg6 21. Rf1 Nf5 22. Qh3 O-O-O 23. Qf3 Qb6+ 24. Kh1 Nd4 25. Qa8+ Qb8 26. Qxb8+ Kxb8 27. Bg5 Rg8 28. Ne4 Nxc2 29. dxc4 Nce3 30. Bxe3 Nxe3 31. Re1 Nxc4 32. Nc5 Re8 33. Re4 Nd6 34. Rxe5 Rxe5 35. Nd7+ Kb7 36. Nxe5 c5 37. Kh2 Nf5 38. Kh3 Kb6 39. g4 hxg4+ 40. Kxg4 Nd6 41. a3 c4 42. Kf4 Kc5 43. Ng6 Kd5 44. Ne7+ Kd4 45. Nc6+ Kd5 46. Nxa7 c3 47. bxc3 Kc4 48. a4 Nb7 49. Nc6 Nc5 50. a5 Kxc3 1/2-1/2
Parent - By billyraybar (***) [us] Date 2018-11-18 00:46
Nice find. Qe7 draw
Parent - - By Lazy Frank (****) [gb] Date 2018-11-06 06:06

[Event "Traxler Refutation"]
[White "White"]
[Black "Black"]
[ECO "C50"]
[Opening "Giuoco Pianissimo"]
[Variation "Italian Four Knights, 5...d6 6.Be3"]
[PlyCount "45"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 5. Bxf7+ Ke7 6. Bc4 Qe8 7. Nc3 h6
8. Nf3 d6 9. O-O Rf8 10. a4 Kd8 11. Be2 Nd4 12. Nxd4 exd4 13. Na2 Qxa4 14.
d3 Be6 15. b3 Qd7 16. c4 dxc3 17. d4 c2 18. Qd3 Bb6 19. Be3 Ke7 20. Qxc2
Kf7 21. Nc3 Kg8 22. f3 Kh8 23. Kh1
Up Topic The Rybka Lounge / Computer Chess / Traxler Refutation - Provisional Mainline.
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