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Up Topic The Rybka Lounge / Test Positions / 4 hard positions
- - By dorszcz (*) Date 2018-11-24 10:00
7b/4p1kp/3p1p2/1pp1P3/5p1P/P3P3/2P1K3/5B2 w - - 0 1

2N2k2/4bp1p/1p2p1p1/p1p1P3/2P4P/1PK3P1/P4P2/8 w - - 0 2

3rr1k1/pb1nqppp/1ppb1n2/3Pp3/3P4/1PN1PN2/PBQ2PPP/3RRBK1 b - - 0 14

8/1p1pNpbk/1q1P4/pP2p2K/P3N3/4P1P1/3P4/8 w - - 0 2
Parent - By user923005 (****) [us] Date 2018-11-28 20:56
First position, Nxb6 clearly draws. Nxe7 wins.  8 seconds for bleeding edge SF to find the move (I fiddle with mobility for my own build, but I doubt it makes a difference):

Searching:
2N2k2/4bp1p/1p2p1p1/p1p1P3/2P4P/1PK3P1/P4P2/8 w - - 0 1

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

1   +2.20   00:00    6753  Nxb6
2   +1.89   00:00  107722  Nxb6 Ke8 Nc8
3   +1.97   00:00  188430  Nxb6 Ke8 Kd3
4   +2.07   00:00  255831  Nxb6 Ke8 Kd3 f6
5   +2.14   00:00  302793  Nxb6 f6 Nd7+ Kg7 Kd3 fxe5
6   +2.02   00:00  341860  Nxb6 Ke8 Kd3 f6 Ke4 f5+ Ke3 g5
7   +1.99   00:00  371135  Nxb6 Ke8 Kd3 f6 Na4 fxe5 Ke4
8   +2.13   00:00  411205  Nxb6 Ke8 Kd3 f6 Na4 fxe5 Ke4 Bd6
9   +2.15   00:00  439800  Nxb6 Ke8 Kd3 f6 Na4 fxe5 Ke4 Bd6 Nb2
10   +2.07   00:00  502907  Nxb6 Ke8 Kd3 f6 Na4 fxe5 Ke4 Bd6 Nb2 Kd8 Nd3 Kc7 Nxe5 Be7 f4 Bd6 Nd3
11   +2.06   00:00  597634  Nxb6 Ke8 Kd3 f6 Na4 fxe5 Ke4 Bd6 Nb2 Kd8 Nd3 Ke7 g4 Kf7 g5
12   +2.09   00:00  668768  Nxb6 Ke8 Kd3 f6 Na4 f5 f4 Kd7 Ke3 Kc6 Nc3 Bd8 a3 Bc7 Nd1 Bb6 Nf2 Kc7 Kf3 Kd7
13   +2.19   00:00  719005  Nxb6 Ke8 Kd3 f6 Na4 f5 f4 Kd7 Ke3 Kc6 Nb2 Bd8 Nd3 Bc7 Nf2 Bb6
14   +2.11   00:00  758986  Nxb6 Ke8 Kd3 f6 Na4 f5 f4 Kd7 Ke3 Kc6 Nc3 Bd8 Nd1 Bb6 Nf2 Kc7
15   +2.11   00:00  807730  Nxb6 Ke8 Kd3 f6 Na4 f5 f4 Kd7 Ke3 Kc6 Nc3 Bd8 Nd1 Bc7 Nf2 Bb6 Nh3 Kd7
16   +2.11   00:00  847030  Nxb6 Ke8 Kd3 f6 Na4 f5 f4 Kd7 Ke3 Kc6 Nc3 Bd8 Nd1 Bb6 Nf2 Kd7 Nh3 Bc7 a3 Bd8 Ng5 Bxg5
17   +2.12   00:00  892026  Nxb6 Ke8 Kd3 f6 Na4 f5 f4 Kd7 Ke3 Kc7 Nc3 Kc6 Nd1 Bd8 Nf2 Bb6 Nh3 Kd7 a3
18   +2.12   00:00   1196K  Nxb6 Ke8 Kd3 f6 Na4 f5 f4 Kd7 Ke3 Kc7 Nc3 Kc6 Nd1 Bd8 Nf2 Bb6 Nh3 Kd7 a3 Bd8 Ng5 Bxg5
19   +2.13   00:00   1320K  Nxb6 Ke8 Kd3 f6 Na4 f5 f4 Kd7 Ke3 Kc7 Nc3 Kc6 Nd1 Bd8 Nf2 Bb6 Nh3 Bd8 Ng5 Bxg5 hxg5 Kd7
20   +2.13   00:00   1404K  Nxb6 Ke8 Kd3 f6 Na4 f5 Ke3 Kd7 f4 Kc7 Nc3 Kc6 Nd1 Bd8 Nf2 Bb6 Nh3 Bd8 Ng5 Bxg5
21   +2.13   00:00   1467K  Nxb6 Ke8 Kd3 f6 Na4 f5 Ke3 Kd7 f4 Kc7 Nc3 Kc6 Nd1 Bd8 Nf2 Bb6 Nh3 Bd8 Ng5 Bxg5 hxg5 Kd7 Ke2 Kd8
22   +2.13   00:00   1920K  Nxb6 Ke8 Kd3 f6 Na4 f5 Ke3 Kd7 f4 Kc7 Nc3 Kc6 Nd1 Bd8 Nf2 Bb6 Nh3 Bd8 Ng5 Bxg5 hxg5 Kd7 Ke2 Kd8
23   +2.00   00:00   5052K  Nxb6 Ke8 Kd3 f5 Na4 Kd7 Ke3 h6 f3 Ke8 Nb2 g5 h5 Kd7 Nd3 Kc6 Ke2 Bd8 Kf2 Bc7 a3 Bd8 Ke3 Bb6 f4 gxf4+ Nxf4
24   +1.91   00:00   5615K  Nxb6 Ke8 Kd3 f5 Na4 h6 f3 Kd7 Ke3 Kc6 Nb2 g5 h5 Kd7 Na4 Kc6 Nc3 Bd8 Nd1 Bb6 Nf2 Bd8 g4 Be7 Nd3 fxg4 fxg4
25   +1.91   00:00   7542K  Nxb6 Ke8 Kd3 f5 Na4 h6 f3 Kd7 Ke3 Kc6 Nb2 g5 h5 Kd7 Na4 Kc6 Nc3 Bd8 Nd1 Bb6 Nf2 Bc7 Nd3 Bd8 Ke2
26   +1.91   00:00   9456K  Nxb6 Ke8 Na4 f6 Kd3 f5 Nb2 Kd7 f4 h6 Kc3 g5 h5 gxf4 gxf4 Kc6 Nd3 Kd7 Kb2 Kc6 Ka3 Bd8 Ka4 Kb6 Nb2 Bh4 Nd1 Bd8
27   +2.09   00:01  13926K  Nxb6 Ke8 Na4 Kd7 Kd3 Kc6 Nb2 f6 Ke4 f5+ Ke3 h6 f4 Kd7 Kf2 Kc6 Nd3 Kc7 Ke2 Kc6 Nf2 Bd8 Kf3 Be7 Ke3 Bd8 Nd3 Bb6
28   +2.08   00:01  15293K  Nxb6 Ke8 Na4 Kd7 Kd3 Kc6 Nb2 f6 Ke4 f5+ Ke3 h6 f4 Kd7 Kf2 Kc6 Nd3 Kc7 Ke2 Kc6 Nf2 Bd8 Kf3 Be7 Ke3 Bd8 Nd3 Bb6 Kf2 Bc7
29   +2.08   00:01  18058K  Nxb6 Ke8 Na4 Kd7 Kd3 Kc6 Nb2 f6 Ke4 f5+ Ke3 h6 f4 Kd7 Kf2 Kc6 Nd3 Kc7 Ke2 Kc6 Kf3 Bd8 Kf2 Bc7 a3 Bb6 Kf3 Bd8 Ke2
30   +2.08   00:01  21337K  Nxb6 Ke8 Na4 Kd7 Kd3 Kc6 Nb2 f5 Ke3 h6 f4 Kd7 Kf2 Kc6 Nd3 Kc7 Ke2 Kb6 Kf3 Kc6 Ke3 Bd8 Kf2 Bc7 Kf3 Bd8 Nb2 Be7 a3 Bd8
31   +1.91   00:02  36103K  Nxb6 Ke8 Na4 f6 f4 Kf7 Kd3 f5 Kc3 h6 Kb2 g5 h5 gxf4 gxf4 Ke8 Kc3 Kd7 Kc2 Kc6 Kd3 Bd8 Ke3 Bc7 Kd2 Bb6 Kc3 Bc7 Kc2 Bd8 Kd3 Be7 Nc3
32   +1.91   00:03  44188K  Nxb6 Ke8 Na4 f6 Kd3 f5 Ke3 h6 f4 Kf7 Nb2 g5 h5 gxf4+ gxf4 Ke8 Kf3 Kd7 Na4 Ke8 Kg3 Kd7 Kf2 Kc6 Kf3 Kc7 Nc3 Kd7 Kf2 Bd8 Ke3 Be7 Kd3
33   +1.91   00:03  45145K  Nxb6 Ke8 Na4 f6 Kd3 f5 Ke3 h6 f4 Kf7 Nb2 g5 h5 gxf4+ gxf4 Ke8 Kf3 Kd7 Na4 Ke8 Kg3 Kd7 Kf2 Kc6 Kf3 Bd8 Nc3 Be7 Ke3 Bd8 Ke2 Be7 Kd3 Kd7
34   +1.91   00:03  48469K  Nxb6 Ke8 Na4 f6 Kd3 f5 Ke3 h6 f4 Kf7 Nb2 g5 h5 gxf4+ gxf4 Ke8 Kf3 Kd7 Na4 Ke8 Kg3 Kd7 Kf2 Kc6 Kf3 Bd8 Nc3 Be7 Ke3 Bd8 Ke2 Be7 Kd3 Kd7 Ke3
35   +5.05   00:08 146720K  Nxe7 Kxe7 Kb2 a4 Ka3 axb3 Kxb3 Kd8 Ka4 Kc7 Kb5 Kb7 g4 h6 a3 g5 hxg5 hxg5 a4 Ka7 a5 bxa5 Kxa5 Ka8 Kb6 Kb8 Kc6 Kc8 Kxc5 Kc7 Kb5 Kd7 c5 Kc7 c6 Kd8 Kb6
36   +6.18   00:22 464884K  Nxe7 Kxe7 Kb2 f6 exf6+ Kxf6 Ka3 Ke7 Ka4 Kd7 Kb5 Kc7 f4 Kb7 g4 Ka7 Kc6 h6 a4 Ka6 Kd6 Kb7 Kxe6 Kc6 Kf6 Kd6 Kxg6 Ke6 Kxh6 Kf6 h5 Kf7 Kg5
37   +7.78   00:44 934691K  Nxe7 Kxe7 Kb2 f6 exf6+ Kxf6 Ka3 Ke5 Ka4 Kd6 Kb5 Kc7 f4 Kb7 g4 Kc7 g5 Kb7 a3 Ka7 Kc6 a4 bxa4 Ka6 Kc7 Ka7 Kd6 Ka6 Kc6 Ka7 Kc7 Ka6 Kb8 Ka5 Kb7 Kxa4 Kxb6 Kxa3 Kxc5 Kb2 Kd6 Kc1 c5 e5 fxe5
38  +11.27   02:22   2939M  Nxe7 f6 Nc8 fxe5 Nxb6 Ke7 Na4 Kd6 Kd3 e4+ Ke3 Ke5 Nxc5 Kd6 Nxe4+ Kc6 Kd4 e5+ Kc3 Kb6 b4 Kc6 b5+ Kb7 c5 Kc7 Kc4 Kd8 Kd5 Kc7 a3 a4 Ke6 g5 h5 g4
39  +13.40   06:31   8596M  Nxe7 Kxe7 Kb2 a4 Ka3 axb3 Kxb3 Kd7 Ka4 Kc7 Kb5 h5 Ka6 Kc6 a4 Kc7 Ka7 Kc6 Kb8 b5 axb5+ Kb6 f4 Ka5 Kc7 Kb4 b6 Kxc4 b7 Kd4 b8=Q c4 Qa7+ Kd3 Kd6 c3 Qxf7 c2 Qxg6+ Kd2
Parent - By user923005 (****) [us] Date 2018-11-28 21:20
2nd problem.  Right move found in 10 seconds, positive score in 39 seconds:

Searching:
3rr1k1/pb1nqppp/1ppb1n2/3Pp3/3P4/1PN1PN2/PBQ2PPP/3RRBK1 b - - 0 1

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

1   -0.38   00:00    4018  cxd5 dxe5 Nxe5
2   -0.31   00:00   26182  Nxd5 Nxd5 cxd5
3   -0.01   00:00   47937  e4 dxc6 Bxc6
4   -0.48   00:00   72940  Nxd5 Nxd5 cxd5 dxe5
5   -0.48   00:00   94802  Nxd5 Nxd5 cxd5 dxe5 Nxe5
6   -0.58   00:00  118192  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Nxe5
7   -0.52   00:00  140695  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Nxe5 Bxe5
8   -0.33   00:00  170521  Nxd5 Nxd5 cxd5 dxe5 Bb4 Qc7 Bxe1 Qxb7
9   -0.42   00:00  194286  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Bxe5 Bxe5 Nxe5 Qxe5
10   -0.45   00:00  220459  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Bxe5 Bxe5 Nxe5 Qxe5 Rd4
11   -0.54   00:00  260986  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Nd4 Bb4 Bb5 Rc8 Qe2 Bxe1 Qxe1 Bc6
12   -0.54   00:00  295518  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Nd4 Bb4 Bb5 Rc8 Qe2 Bxe1 Qxe1 Bc6
13   -0.47   00:00  411195  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Nd4 Rc8 Qb1 Bb4 Re2 Bc3 Bxc3 Rxc3 Red2
14   -0.42   00:00  869825  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Nd4 Rc8 Qe2 g6 Ra1 Nc6 Nb5 Be5 Rad1 Rcd8
15   -0.59   00:00   1290K  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Nd4 Rc8 Qe2 g6 Rc1 Nc6 Nxc6 Rxc6 Rxc6 Bxc6 g3 f6 Rd1 Be5 Bg2 Bxb2
16   -0.54   00:00   2140K  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Nd4 Rc8 Qe2 g6 Rc1 Nc6 Nxc6 Rxc6 Rxc6 Bxc6 Rd1 f6 g3 Kg7 Bg2 Be5 Bd4 Bxd4 Rxd4 Bb7 Bxd5
17   -0.35   00:00   2863K  cxd5 dxe5 Nxe5 Nd4 Rc8 Nf5 Qc7 Nxd6 Qxd6 h3 Neg4 hxg4 Nxg4 g3 Qh6 Bg2 Qh2+ Kf1 Ba6+ Rd3 d4
18   -0.71   00:00   5193K  Nxd5 Nxd5 cxd5 dxe5 Nxe5 Nd4 Rc8 Qe2 Qd7 f4 Nc6 Nxc6 Bxc6 Qh5 g6 Qh4 Re6 Qg5 Be7
19   -0.75   00:00   6400K  cxd5 dxe5 Nxe5 Nd4 Rc8 Nf5 Qc7 Bb5 Re6 Nxd6 Rxd6 Qd2 Neg4 h3 d4 exd4 Rxd4 Qxd4 Qh2+ Kf1 Qxg2+ Ke2 Qxh3
20   -0.53   00:00   9700K  cxd5 dxe5 Nxe5 Nd4 a6 Nf5 Qc7 Nxd6 Qxd6 h3 Nfg4 Be2 d4 hxg4 d3 Qd2 dxe2 Qxd6 exd1=Q Rxd1 Rxd6
21   -0.45   00:01  13092K  cxd5 dxe5 Nxe5 Nd4 g6 Bb5 Ned7 Qd2 Bb4 Qe2 Rc8 Rc1 Red8 Rc2 Ne4 Rec1 Bc5 Ba6 Ndf6 Bxb7 Qxb7 Ncb5 Qd7 h3
22   -0.49   00:01  15924K  cxd5 dxe5 Nxe5 Nd4 g6 Bb5 Ned7 Qd2 Bb4 Qe2 Rc8 Rc1 Red8 Ba6 Bxa6 Qxa6 Ne5 h3 Rc5 Red1 Bxc3 Rxc3 Ra5 Qe2 Ne4 Nc6 Nxc6 Rxc6 Rxa2
23   -0.44   00:02  21397K  cxd5 dxe5 Nxe5 Nd4 g6 Bb5 Ned7 Qd2 Bb4 Qe2 Rc8 Rc1 Red8 Ba6 Bxa6 Qxa6 Ne5 Qe2 Ba3 Red1 Bxb2 Qxb2 a6 a4 Rc7 Nce2 Rdc8 Rxc7 Rxc7 h3 Kg7 Qa2 Rc8
24   -0.20   00:03  31121K  cxd5 dxe5 Nxe5 Nd4 g6 Bb5 Ned7 h3 Rc8 Qe2 Red8 Ba6 Bxa6 Qxa6 Nc5 Qe2 Nce4 Rc1 Qb7 Nxe4 Nxe4 Nf3 Rxc1 Rxc1 a6 Rd1 f6 a4
25   -0.20   00:04  47167K  cxd5 dxe5 Nxe5 Nd4 g6 Bb5 Ned7 Nf3 a6 Bxd7 Rxd7 Qd2 Bc5 Qd3 b5 Rc1 Bb6 h3 Ne4 Nxe4 dxe4 Qc3 f6 Nh2 h5 Qxf6 Qxf6 Bxf6 Rf8 Bc3
26   -0.18   00:10 102446K  e4 dxc6 Bxc6 Ne5 Nxe5 dxe5 Qxe5 g3 Qc5 Rd4 Be5 Rc4 Qd6 Rd1 Qe6 Rc1 h6 a4 a6 Bg2 Bb7 Ba3 Rc8 Nxe4 Bxe4 Bxe4 Rxc4 Qxc4 Nxe4 Qxe4
27   -0.02   00:12 119810K  e4 dxc6 Bxc6 Ne5 Nxe5 dxe5 Qxe5 g3 Qc5 Rd4 Be5 Rxd8 Rxd8 Rc1 Bd7 Qd2 Qe7 Rd1 Rc8 h3 Bc6 a4 h6 Ne2 Bb7 Bxe5 Qxe5 Nd4 Qa5 Be2 Qxd2 Rxd2
28   -0.00   00:13 130551K  e4 dxc6 Bxc6 Ne5 Nxe5 dxe5 Qxe5 g3 Qc5 Rd4 Be5 Rxd8 Rxd8 Rc1 Bd7 Qd2 Qe7 Rd1 h6 h3 Bc7 Qe2 Be5
29   -0.24   00:17 175200K  e4 dxc6 Bxc6 Ne5 Nxe5 dxe5 Qxe5 g3 Qc5 Rd2 Ng4 Bg2 Be5 h3 Nf6 Rc1 Rxd2 Qxd2 Qe7 Ne2 Bd7 Bxe5 Qxe5 Nd4 a5 a3 Rc8 Rxc8+ Bxc8 b4 Bd7 Bf1 axb4 axb4 Nd5
30   -0.00   00:23 234367K  e4 dxc6 exf3 cxb7 Bxh2+ Kxh2 Qd6+ Kh3 Qe6+ Kh2
31   +0.00   00:25 257659K  e4 dxc6 exf3 cxb7 Bxh2+ Kxh2 Qd6+ Kh3 Qe6+ Kh2
32   +0.57   00:39 391431K  e4 Ne5 cxd5 Nxd7 Qxd7 Bb5 Bc6 Bxc6 Qxc6 Rc1 Qd7 Qe2 Rc8 h3 h5 Qa6 Bb4 Red1 Bxc3 Bxc3 Rc6 Bb2 Rec8 Rxc6 Rxc6 Rc1 Rxc1+ Bxc1 h4 Ba3 g5 Qe2 Kg7 Bb2 a5 a4
33   +0.80   00:59 582969K  e4 Ne5 cxd5 Nxd7 Qxd7 Bb5 Bc6 Bxc6 Qxc6 Rc1 Qd7 Qe2 h5 Qb5 Qb7 Rc2 Rc8 Qe2 a6 Rec1 b5 h3 g5 Qd2 h4 Ne2 b4 Qd1 Kg7 Rc5 Nd7 Qc2 Nxc5 dxc5+ Kg6
34   +0.72   01:06 642716K  e4 Ne5 cxd5 Nxd7 Qxd7 Bb5 Bc6 Bxc6 Qxc6 Rc1 Qd7 h3 h5 a4 g5 Rf1 g4 h4 a6 Ne2 Rc8 Qd2 Kg7 Rxc8 Rxc8 Bc3 a5 Rc1 Qb7 Qa2 Qb8 g3 Qb7 Kg2 Qe7 Qd2 Qd7 Qe1 Rc6 Nf4 Bxf4 exf4
35   +0.61   01:15 736351K  e4 Ne5 cxd5 Nxd7 Qxd7 Bb5 Bc6 Bxc6 Qxc6 Rc1 Qd7 a4 h5 h3 g5 Rf1 g4 h4 a6 Ne2 Rc8 Qd2 a5 Ra1 Rc6 Rfc1 Rec8 Rxc6 Qxc6 Rc1 Qb7 Nc3 Bb4 Qe2 Rc6 Nb5 Rxc1+ Bxc1 Qc6 Qb2 Kg7 Bd2
36   +0.83   02:04   1204M  e4 Ne5 cxd5 Nxd7 Qxd7 Rc1 Qf5 g3 Rc8 f4 a6 Qe2 h5 Na4 Nd7 Qg2 g5 Qh3 g4 Qg2 Bb4 Bc3 Ba3 Bb2 Bd6 Qd2 h4 Nc3 Be7 Be2 b5 Rf1 hxg3 hxg3 Bd6 Kg2
37   +0.72   03:41   2136M  e4 Ne5 cxd5 Bb5 Ra8 f4 exf3 Nxd7 Nxd7 gxf3 Rac8 Qg2 a6 Bd3 Qh4 Bf5 Rc7 e4 Nf6 e5 Bb4 Re3 Qf4 Bc1 Nh5 Bg4 Qg5 e6 Qg6 Bxh5 Qxh5 Re5 Qg6 Qxg6 hxg6 Nxd5 Bxd5 Rxd5 fxe6 Rg5 Kf7 Bd2 Bd6 Rg2 Rc2
38   +0.62   04:47   2744M  e4 Ne5 cxd5 Bb5 Ra8 f4 exf3 Nxd7 Nxd7 gxf3 Rac8 Qg2 a6 Bd3 g6 Re2 Nf6 Qg5 b5 Rc1 Qe6 Nd1 Nh5 Rxc8 Rxc8 Nf2 f5 Nh3 b4 Qh6 Re8 Qg5 Kg7 Qg2 Qd7 Bc1 h6 Nf2 a5 Rc2 Kh7 Bd2 Nf6
39   +0.71   05:41   3245M  e4 Ne5 cxd5 Bb5 a6 Bc6 Ba8 Bxa8 Rxa8 Nxd7 Qxd7 Na4 Qb7 Qd2 Rac8 Rc1 h5 Rxc8 Rxc8 Rc1 Rxc1+ Qxc1 Bb8 Qc3 a5 Qc2 h4 Qe2 h3 f4 hxg2 Kxg2 Bd6 h3 b5 Nc5 Qb6 a4 bxa4 bxa4 Bxc5
40   +0.57   07:42   4336M  e4 Ne5 cxd5 Bb5 Ra8 f4 exf3 Nxd7 Nxd7 gxf3 Rac8 Qg2 a6 Bd3 g6 Re2 Qh4 Qg4 Qd8 Qg2 Nf6 Rc1 Bf8 Qg5 Be7 Nd1 Nh5 Qg2 Bh4 Nf2 f5 Rxc8 Bxc8 Bc1 Qd6 f4 Bb7 Rc2 Qe7 Bd2 Nf6 Bxf5
41   +0.70   09:04   5115M  e4 Ne5 cxd5 Nxd7 Qxd7 Bb5 Bc6 Bxc6 Qxc6 Rc1 Rc8 Qe2 Qb7 h3 a6 a4 g6 Rc2 Rc7 Rec1 Rec8 Na2 Rxc2 Rxc2 Kg7 Rxc8 Qxc8 Bc3 g5 Be1 h5 Nc3 g4 hxg4 hxg4 Kf1 Kg6 Kg1 g3 fxg3 Kg7 Qf2 Ng4 Qe2
42   +0.70   10:00   5656M  e4 Ne5 cxd5 Nxd7 Qxd7 Bb5 Bc6 Bxc6 Qxc6 Rc1 Rc8 Qe2 Qb7 h3 a6 a4 g6 Rc2 Rc7 Rec1 Rec8 Na2 Rxc2 Rxc2 Kg7 Rxc8 Qxc8 Bc3 g5 Be1 h5 Nc3 g4 hxg4 hxg4 Kf1 Kg6 Kg1 g3 fxg3 Kg7 Qf2 Ng4 Qe2
Nodes: 5656312351
Nodes/second: 9427140
Best move: e4
Ponder move: Ne5
Parent - By user923005 (****) [us] Date 2018-11-28 21:26
3rd problem, correct move in 4 seconds:

Searching:
7b/4p1kp/3p1p2/1pp1P3/5p1P/P3P3/2P1K3/5B2 w - - 0 1

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

1   -0.32   00:00    4712  exd6
2   -0.32   00:00   38292  exd6 exd6 exf4
3   -0.23   00:00   62427  exd6 exd6 exf4
4   -0.18   00:00   93181  exd6 exd6 exf4 Kg6 Ke3
5   -0.12   00:00  126305  exd6 exd6 exf4 Kf7 Kd2
6   -0.06   00:00  155878  exd6 exd6 Kf3 fxe3 Bxb5 Kg6
7   -0.08   00:00  192781  exd6 exd6 exf4 f5 Ke3 c4 Bg2
8   -0.08   00:00  224085  exd6 exd6 exf4 f5 Ke3 c4 Bg2 Kh6
9   +0.01   00:00  267406  exd6 exd6 Kf3 Kg6 Kxf4 f5 Bxb5 Be5+ Kf3
10   +0.11   00:00  295048  exd6 exd6 Kf3 fxe3 Bxb5 Kf7 a4 f5 a5
11   +0.07   00:00  339182  exd6 exd6 Kf3 c4 Kxf4 Kf7 Bg2 f5 Kxf5 Bb2 Bc6 Bxa3 Bxb5
12   +0.10   00:00  380434  exd6 exd6 Kf3 c4 Kxf4 Kf7 Bg2 Ke6 Be4 h6 Bc6 f5 Bxb5 Be5+ Kf3 d5 a4
13   +0.18   00:00  458497  exd6 exd6 Kf3 c4 Kxf4 f5 Kxf5 Kf7 Bg2 Bb2 Bc6 Bxa3 Bxb5 c3 e4 Ke7
14   +0.22   00:00  550190  exd6 exd6 Kf3 c4 Kxf4 Kf7 Bg2 f5 Kxf5 Bb2 Bc6 Bxa3 Bxb5 c3 Bd3 Kg7 Kf4 Bc5 Be4
15   +0.17   00:00  611737  exd6 exd6 Kf3 c4 Kxf4 f5 Bh3 Kh6 Bxf5 Bb2 Bd7 Bxa3 Bxb5 c3 Ke4 Kh5 Kd3
16   +0.13   00:00  768354  exd6 exd6 Kf3 c4 Kxf4 f5 Kxf5 Kf7 Bg2 Bb2 Bc6 Bxa3 Bxb5 c3 Bc4+ Ke7 Bd5 Bc5 Ke4 Kf6 Kf4 Kg6 Be4+ Kg7 Bf5
17   +0.17   00:00  958820  exd6 exd6 Kf3 c4 Kxf4 Kf7 Bg2 f5 Kxf5 Bb2 Bc6 Bxa3 Bxb5 c3 Bc4+ Ke7 Bd5 Bc1 Ke4 Kf8 Kd3 Bd2 Be4 Kg7 Kd4
18   +0.11   00:00   1088K  exd6 exd6 Kf3 c4 Kxf4 f5 Kxf5 Kf7 Bg2 Bb2 Bc6 Bxa3 Bxb5 c3 Bc4+ Ke7 Ke4 Bc5 Bg8 h6 Bd5 Kf6 Kd3 Kf5 Bc6 Kg4
19   +0.10   00:00   2136K  exd6 exd6 Kf3 c4 Kxf4 f5 Kxf5 Kf7 Bg2 Bb2 Bc6 Bxa3 Bxb5 c3 Bc4+ Ke7 Ke4 Bc5 Bg8 h5 Ba2 Kf6 Bb3 Bb6 Kd3 Ke5
20   +0.15   00:00   2377K  exd6 exd6 Kf3 c4 Kxf4 f5 Kxf5 Kf7 Bg2 Bb2 Bc6 Bxa3 Bxb5 c3 Bc4+ Ke7 Ke4 h6 Kd3 Bc5 Bd5 Kf6 e4 Bf2 h5 Kg5
21   +1.43   00:00  11557K  exd6 exd6 c4 b4 a4 d5 exf4 dxc4 a5 c3 a6 b3 Kd1 c2+ Kd2 c4 a7 c3+ Kc1 b2+ Kxc2 b1=Q+ Kxb1
22   +1.72   00:01  13173K  exd6 exd6 c4 b4 a4 b3 Kd3 f3 a5 d5 cxd5 f5 a6 c4+ Kd2 f4 exf4 c3+ Kxc3 Kf7+ Kxb3 Bd4 Bd3 Bc5 Bxh7
23   +2.44   00:01  15441K  exd6 exd6 c4 b4 a4 b3 Kd3 Kf7 a5 d5 exf4 f5 a6 Bf6 cxd5 h5 a7 c4+ Kxc4 b2 Bd3 b1=Q Bxb1
24   +2.70   00:01  18779K  exd6 exd6 c4 Kf8 cxb5 Ke7 a4 f3+ Kxf3 Kd7 a5 Kc7 Kf4 Kb7 Bg2+ Ka7 b6+ Ka6 Bf1+ Kb7 Kf5 Bg7 Bc4 Bh6 e4 Be3 Bd5+ Ka6
25   +1.35   00:02  32846K  exd6 exd6 c4 Kf7 cxb5 f5 a4 Bc3 b6 Ba5 b7 Bc7 exf4 Ke6 Bh3 c4 a5 d5 Ke3 Kd6 Bxf5 Kc6 Bc8 d4+ Kxd4 c3 Kxc3 Bxa5+ Kc4 Kc7 Kb5
26   +2.38   00:04  61045K  c4 Kf7 cxb5 Ke6 a4 Kd7 exd6 Kxd6 a5 f3+ Kxf3 Kc7 Kf4 Kb7 Kf5 Ka7 Bd3 Bg7 b6+ Kb7 Bc4 Bh6 Ke4 Bg7 Kd5 Bh6
27   +2.98   00:06  91902K  c4 Kf7 cxb5 Ke6 a4 f3+ Kxf3 Kd7 a5 Kc7 Bc4 Kb7 Bd5+ Ka7 b6+ Ka6 exd6 exd6 Ke4 Bg7 b7 Ka7 a6 Bh6 Bg8 c4 Bxh7
28   +3.26   00:09 126265K  c4 Kf7 cxb5 Ke6 a4 f3+ Kxf3 Kd7 a5 Kc7 exd6+ exd6 Bc4 Kb7 Bd5+ Ka7 b6+ Ka6 Ke4 Bg7 b7 Ka7 a6 f5+ Kxf5 c4 Bxc4 Be5 Ke6 Bg3 Kd5 Bxh4 Kc6 Bg3 Bd5
29   +3.48   00:12 172530K  c4 f3+ Kxf3 Kf7 cxb5 Ke6 a4 Kd7 exd6 exd6 a5 Kc7 Bc4 Kb7 Bd5+ Ka7 b6+ Ka6 Ke4 Bg7 b7 Ka7 a6 Bh6 Bg8 f5+ Kd5 Bxe3 Bxh7 Bf4 Bxf5 c4 h5 c3 Be4 Kb8 Bc2 Bc1 Ke4 d5+ Kf5
30   +3.89   00:17 242152K  c4 f3+ Kxf3 Kf7 cxb5 Ke8 exd6 exd6 a4 Kd8 Bc4 Kc8 a5 Kb7 Bd5+ Ka7 b6+ Ka6 Bc4+ Kb7 Ke4 Bg7 Bd5+ Ka6 b7 Ka7 a6 Bh6 Bg8 c4 Bxh7 c3 Kd4 f5 Bxf5 Bg7+ Kc4 Bh6 Kxc3 Bxe3 Kc4 d5+ Kxd5 Kb8
31   +4.00   00:21 301166K  c4 f3+ Kxf3 Kf7 cxb5 Ke8 exd6 exd6 a4 Kd8 Bc4 Kc7 a5 Kb7 Bd5+ Ka7 b6+ Ka6 Bc4+ Kb7 Ke4 Bg7 Bd5+ Ka6 b7 Ka7 a6 Bh6 Bg8 d5+ Kxd5 c4 Bxh7 Bxe3 Kxc4 Bf4 Kb5 Bg3 h5 Bf4 Kc6 Kb8 Bd3 Ka7 Kd7 Kb8 Ke6 Be3 Bc4 Bf4 Kf5
32   +4.09   00:24 345853K  c4 f3+ Kxf3 Kf7 cxb5 Ke8 exd6 exd6 a4 Kd8 a5 Kc7 Bc4 Kb7 Bd5+ Ka7 b6+ Ka6 Bc4+ Kb7 Ke4 Bg7 Bd5+ Ka6 b7 Ka7 a6 Bh6 Bg8 f5+ Kd5 Bxe3 Bxh7 Bf4 Bxf5 c4 h5 c3 Bd3 Bh6 Bc2 Bf4 Ke4 Bh6 Kf5 Bd2 Kg6 Be3 Bd3
33   +4.10   00:26 366372K  c4 f3+ Kxf3 Kf7 cxb5 Ke8 exd6 exd6 a4 Kd8 a5 Kc7 Bc4 Kb7 Bd5+ Ka7 b6+ Ka6 Bc4+ Kb7 Ke4 Bg7 Bd5+ Ka6 b7 Ka7 a6 Kb8 Bg8 c4 Bxh7 c3 Kd5 Bh6 Kd4 Ka7 Bd3 Kb8 Bc2 Ka7 h5 Kb8 Bf5 Ka7 Kxc3 Bg7 Kd4
34   +4.19   00:29 419655K  c4 f3+ Kxf3 Kf7 cxb5 Ke8 exd6 exd6 a4 Kd8 a5 Kc7 Bc4 Kb7 Bd5+ Ka7 b6+ Ka6 Bc4+ Kb7 Ke4 Bg7 Bd5+ Ka6 b7 Ka7 a6 Bh6 Bg8 d5+ Kxd5 Bxe3 Bxh7 c4 Kxc4 Bf4 Kb5 Kb8 Kc6 Bh6 Bd3 Bd2 Kd5 Bf4 h5 Bh6 Ke6 f5 Kxf5
35   +4.23   00:33 469324K  c4 f3+ Kxf3 Kf7 cxb5 Ke8 exd6 exd6 a4 Kd8 a5 Kc7 Bc4 Kb7 Bd5+ Ka7 b6+ Ka6 Bc4+ Kb7 Ke4 Bg7 Bd5+ Ka6 b7 Ka7 a6 Bh6 Bg8 f5+ Kd5 Bxe3 Bxh7 Bf4 Bxf5 c4 h5 c3 Bd3 Bh6 Bc2 Bg7 Kc6 d5 Kxd5 Kb8 Ke4 Bh6 Kf5 Be3 Kg6 Bf4
36   +4.57   00:46 655565K  c4 f3+ Kxf3 Kf7 cxb5 Ke6 a4 Kd7 exd6 exd6 a5 Kc7 Bc4 Kb8 Bd5 Ka7 Ke4 f5+ Kxf5 Bc3 b6+ Ka6 b7 Ka7 a6 Ba5 Ke6 Kb8 Kd7 Bb6 Kc6 Ba5 Bc4 h5 e4 Bd8 Kxd6 Bxh4 e5 Bg3
37   +5.30   00:57 827060K  c4 f3+ Kxf3 Kf7 cxb5 Ke6 a4 Kd7 exd6 exd6 a5 Kc7 Bc4 Kb8 Bd5 Ka7 Ke4 Bg7 Kf5 c4 b6+ Ka6 Bxc4+ Kb7 Bd5+ Ka6 b7 Ka7 a6 Bh6 Bg8 Bxe3 Bxh7 Bb6 Bg8 Be3 h5 Bd2 Kg6 f5 Bd5 f4 Bf3 Kb8 Kf5 Bc3 h6 Be5 h7 Ka7 Be4
38   +5.99   01:20   1173M  c4 f3+ Kxf3 Kf7 cxb5 Ke8 a4 Kd8 exd6 exd6 a5 Kc7 Bc4 Kb8 Bd5 Ka7 Kf4 f5 Kxf5 Bc3 b6+ Ka6 b7 Ka7 a6 Ba5 Ke6 Bb6 Kd7 Kb8 Kc6 Ba5 Bc4 h5 e4 Bd8 a7+ Kxa7 Kd7 Kxb7 Kxd8 Kc6 Ke7 Kc7 Ke6 Kc6 e5 d5 Bxd5+ Kb6
39   +7.05   01:50   1663M  c4 f3+ Kxf3 Kf8 cxb5 Ke8 a4 Kd8 exd6 exd6 a5 Kc7 Bc4 Kb7 Bd5+ Ka7 Kf4 f5 b6+ Ka6 Kxf5 Bc3 b7 Ka7 a6 Ba5 Ke6 Kb8 Kd7 Bb6 Kc6 Ba5 Bc4 d5 Kxd5 Be1 e4 Kc7 e5 Bc3 h5 Bd4 e6 Bf6 b8=B+ Kxb8 Kd6 h6 e7 Bxe7+ Kxe7
40   +7.86   02:45   2584M  c4 f3+ Kxf3 Kf7 cxb5 Ke8 a4 Kd7 a5 Kc7 exd6+ exd6 Bc4 Kb8 Bd5 Ka7 Kf4 f5 Kxf5 Bc3 b6+ Ka6 b7 Ka7 a6 Ba5 Ke6 Kb8 Kd7 Bb6 Kc6 Ba5 Bc4 d5 Kxd5 Kc7 e4 Be1 e5 Bc3 h5 Bd4 e6 Bf6 b8=Q+ Kxb8 Kd6 Bd8 e7 Bxe7+ Kxe7 Ka7 Kd6
41  +11.18   09:59   9687M  c4 f3+ Kxf3 Kf7 cxb5 Ke8 a4 Kd8 a5 Kc7 exd6+ exd6 Bc4 Kb8 Bd5 Ka7 Kf4 f5 Kxf5 Bc3 b6+ Ka6 b7 Ka7 a6 Ba5 Ke6 Kb8 Kd7 Bb6 Kc6 Ba5 Bc4 d5 Kxd5 Bc3 Kd6 Be1 e4 Bg3+ e5 h5 Ke6 Ka7 Kd5 Be1 e6 Bxh4 Kd6 Bg3+ Kd7 Bf4
42  +11.18   10:00   9699M  c4 f3+ Kxf3 Kf7 cxb5 Ke8 a4 Kd8 a5 Kc7 exd6+ exd6 Bc4 Kb8 Bd5 Ka7 Kf4 f5 Kxf5 Bc3 b6+ Ka6 b7 Ka7 a6 Ba5 Ke6 Kb8 Kd7 Bb6 Kc6 Ba5 Bc4 d5 Kxd5 Bc3 Kd6 Be1 e4 Bg3+ e5 h5 Ke6 Ka7 Kd5 Be1 e6 Bxh4 Kd6 Bg3+ Kd7 Bf4
Nodes: 9699265845
Nodes/second: 16165389
Best move: c4
Ponder move: f3+
Parent - - By user923005 (****) [us] Date 2018-11-28 21:31
For the fourth problem, SF only finds a draw so far.

Searching:
8/1p1pNpbk/1q1P4/pP2p2K/P3N3/4P1P1/3P4/8 w - - 0 1

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

1   -5.73   00:00    8023  Ng5+ Kh8
2   +0.00   00:00   31909  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8 Nf7+
3   +0.00   00:00   57287  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
4   +0.00   00:00   83648  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
5   +0.00   00:00  115430  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
6   +0.00   00:00  141156  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
7   +0.00   00:00  164483  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
8   +0.00   00:00  195134  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
9   +0.00   00:00  227325  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
10   -0.00   00:00  252745  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
11   +0.00   00:00  277887  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
12   +0.00   00:00  304220  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
13   +0.00   00:00  338674  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
14   +0.00   00:00  376826  Ng5+ Kh8 d4 exd4 Nxf7+ Kh7 Ng5+ Kh8
15   -0.00   00:00  402346  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
16   -0.00   00:00  523108  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
17   +0.00   00:00  554508  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
18   +0.00   00:00  590196  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
19   -0.00   00:00  624650  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
20   +0.00   00:00  695974  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
21   +0.00   00:00  873375  Ng5+ Kh8 d4 exd4 Nxf7+ Kh7 Ng5+ Kh8
22   +0.00   00:00  909848  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
23   +0.00   00:00  940435  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
24   +0.00   00:00  970583  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
25   -0.00   00:00   1876K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
26   +0.00   00:00   1899K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
27   +0.00   00:00   1925K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
28   -0.00   00:00   2739K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
29   +0.00   00:00   2890K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
30   +0.00   00:00   2970K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8 d4 exd4 Nf7+ Kh7 Ng5+
31   -0.00   00:00   4360K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
32   +0.00   00:00   4523K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
33   +0.00   00:00   4738K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
34   +0.00   00:00   7081K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
35   +0.00   00:00  10110K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
36   -0.00   00:01  14305K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
37   +0.00   00:01  15170K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
38   +0.00   00:01  18009K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
39   +0.00   00:01  23534K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
40   -0.00   00:03  38494K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
41   -0.00   00:03  42362K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
42   +0.00   00:05  63647K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
43   +0.00   00:05  68813K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
44   +0.00   00:05  72078K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
45   +0.00   00:08 100636K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
46   +0.00   00:10 131579K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8 d4 exd4 Nf7+ Kh7 Ng5+
47   -0.00   00:12 152958K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
48   -0.00   00:17 218792K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
49   +0.00   00:17 221080K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
50   +0.00   00:20 248514K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
51   -0.00   00:30 373884K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
52   +0.00   00:30 374505K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
53   +0.00   00:31 378858K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
54   +0.00   00:33 412585K  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
55   -0.00   00:58 723924K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
56   +0.00   01:10 870499K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
57   +0.00   01:14 921497K  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
58   +0.00   01:43   1293M  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8 Nf7+
59   +0.00   01:45   1310M  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
60   +0.00   01:56   1447M  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
61   +0.00   02:24   1818M  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
62   -0.00   02:59   2221M  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
63   +0.00   03:23   2506M  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
64   +0.00   03:39   2697M  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+
65   +0.00   04:09   3068M  Ng5+ Kh8 Nxf7+ Kh7 d4 exd4 Ng5+ Kh8 Nf7+

I will try some other engines.
Parent - - By user923005 (****) [us] Date 2018-11-28 21:34
Sting solves this one in 4 seconds:

Searching:
8/1p1pNpbk/1q1P4/pP2p2K/P3N3/4P1P1/3P4/8 w - -

infinite: 0 ponder: 0 time: 0 increment: 0 moves to go: 0
1   +8.44   00:02      54  Ng5+
2   +8.44   00:02      85  Ng5+ Kh8
3   +8.73   00:02     133  Ng5+ Kh8 Nxf7+
4   +8.73   00:02     199  Ng5+ Kh8 Nxf7+ Kh7
5   +8.73   00:02     300  Ng5+ Kh8 Nxf7+ Kh7 Ng5+
6   +8.73   00:02     438  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
7   +8.48   00:02    1193  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8 Ng6+ Kg8
8   +1.74   00:02    7274  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8 d4 Bh6 Nc8 Bxg5
9   +3.92   00:02   12405  Ng5+ Kh8 Nxf7+ Kh7 d4 Bf8 Nc8 Qxd4 exd4 exd4 Ne5
10   +1.74   00:02   26022  Ng5+ Kh8 Nxf7+ Kh7 Ng5+
11   +2.55   00:02   41663  Nc8 Qd8 Ng5+ Qxg5+ Kxg5 Kg8 Nb6 Bf8 Nc4 Kg7 Kf5 f6 g4 Kf7
12   +3.07   00:02   60066  Nc8 Qd8 Ng5+ Qxg5+ Kxg5 f6+ Kf5 Kh6 Nb6 Bf8 Kxf6 Bxd6 Nc4 Bc7
13   +3.76   00:02  107412  Nc8 Qd8 Ng5+ Qxg5+ Kxg5 f6+ Kf5 Kg8 Nb6 Bf8 Nc4 Kf7 Nxa5 Bxd6 Nxb7 Bb4 d4
14   +4.00   00:02  140063  Nc8 Qd8 Ng5+ Qxg5+ Kxg5 f6+ Kf5 Kg8 Nb6 Bf8 Nc4 Kf7 Nxa5 Bxd6 Nxb7 Bb4 d4 exd4 exd4 Bc3 Nc5
15   +4.04   00:02  190708  Nc8 Qd8 Ng5+ Qxg5+ Kxg5 Kg8 Nb6 Bf8 Nc4 Kg7 Nxa5 Bxd6 Nxb7 Bb4 d3 Bd2 Kf5
16   +3.96   00:02  363546  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 f6 Kg6 Bh8 g4 Kc8 Nxf6 Bxf6 Kxf6 Kd8 Kxe5 Kc8
17   +2.63   00:02  450632  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 Ng5 f6 Nf7 Qxc7 bxc7 b5 axb5 a4 Nd8 Bf8 b6 Bxd6
18   +3.76   00:02  582930  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 Ng5 Qxc7 dxc7 Bf8 Nxf7 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Nxe5 Kxc7 Kg5
19   +3.56   00:02  698011  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 Ng5 Qxc7 dxc7 Bf8 Nxf7 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Kg5 e4 Kf6 Kxc7 Ng5 b5 axb5 Kb6
20   +3.56   00:02  852691  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 Ng5 Qxc7 dxc7 Bf8 Nxf7 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Kg5 e4 Kf6 Kxc7 Ng5 b5 axb5 Kb6
21   +3.56   00:02  913464  Nc8 Qd8
22   +1.82   00:02   1495K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 Ng5 Bf8 Nxf7 Bxd6 Nxd6+ Kd8 Ne8 Ke7 d3 Qxe8+ Nxe8 Kxe8 g4 Ke7 g5 Kf7 Kg4
23   +2.83   00:03   2039K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 Nxb7+ Ke7 g6 Be5 Nxa5
24   +3.27   00:03   2580K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 Nxb7+ Ke7 g6 Be5 Nxa5 Bg7 Kg5 Ke6 Nb3 Ke7
25   +3.03   00:03   3151K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 Nxb7+ Ke7 g6 Kf8 Kh6 Be5 Nxa5
26   +5.17   00:04   8419K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 f5 Kg6 f4 Ng5 fxg3 Kxg7 g2 Nf3 e4 Ng1 Kc8 Kf6 Kd8 Ke5 Kc8 Kxe4 Kd8 Kf3 Kc8 Kxg2 Kd8 Nf3
27   +5.41   00:04  14309K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Ke7 Nc8+ Kf7 Nxa7 Kg7 Nb5 b6 Nd4
28   +6.46   00:07  36746K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Ke7 Nc8+ Kf8 Nxa7 d5 Nb5 Kf7 Nc7 Kg7 Nxd5
29   +7.52   00:10  72374K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 Bf8
30   +7.43   00:12  96035K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f5 Kg6 Bb2 Nf7+ Kc8 Kxf5 Ba3 Nb5 Qa8 Na7+ Kb8 Ne5 Qxa7 Nxd7+ Ka8 bxa7 Kxa7 g4 b5 axb5 Kb7 g5 Kc8 Nb6+ Kd8 Nc4 Bc5 g6
31   +7.60   00:14 110572K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f5 Kg6 Bb2 Nf7+ Kc8 Kxf5 Ba3 Nb5 Qa8 Na7+ Kb8 Ne5 Qxa7 Nxd7+ Ka8 bxa7 Kxa7 g4 b5 axb5 Bxd6 g5 a4 g6 Bf8 Nxf8 a3 g7 a2 g8=Q a1=Q Qc4
32   +7.72   00:16 129902K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f6 Nf7+ Kc8 Kg6 Qxc7 dxc7 Bf8 Kxf6 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Nd6+ Kxc7 Kf7 Bxd6 g7 Bb4 g8=Q Bxd2 Qg3+ Kc6 Qg6+ Kc7 Qxe4 Bb4 Qd5
33   +8.61   00:24 218912K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5
34   +8.85   00:28 269249K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f6 Nf7+ Kc8 Kg6 Qxc7 dxc7 Bf8 Kxf6 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Nd6+ Kxc7 Kf7 Bxd6 g7 Bb4 g8=Q Bxd2 Ke8 Bb4 Qc4+ Kd6 Qxe4 Kc7 Qc4+ Kd6 e4 Ke5 Qd5+
35   +9.09   00:34 338542K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f5 Kg6 Bb2 Nf7+ Kc8 Kxf5 Ba3 Nb5 Qa8 Na7+ Kb8 Ne5 Qxa7 Nxd7+ Ka8 bxa7 Kxa7 g4 b5 axb5 Bxd6 g5 a4 g6 Bf8 Nxf8 a3 g7 a2 g8=Q a1=Q Qc4 Qg7 Qc5+ Kb8 Qb6+ Qb7 Nd7+ Kc8 Qxb7+ Kxb7
36   +9.01   00:36 354343K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f5 Kg6 Bb2 Nf7+ Kc8 Kxf5 Ba3 Nb5 Qa8 Na7+ Kb8 Ne5 Qxa7 Nxd7+ Ka8 bxa7 Kxa7 g4 b5 axb5 Bxd6 g5 a4 g6 Bf8 Nxf8 a3 g7 a2 g8=Q a1=Q Qc4 Qg7 Qc5+ Kb8 Qb6+ Qb7 Nd7+ Kc8 Qxb7+ Kxb7 Kxe4 Kc7 Ne5
37   +9.29   00:47 483833K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Ke7 g8=Q Bb4 Qg7+ Kd8 Qg5+ Kc8 Qd5 Kd8 Kg6 Ke8 Qxe4+ Kf8 d4
38   +9.82   01:03 676089K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f6 Nf7+ Kc8 Kg6 Qxc7 dxc7 Bf8 Kxf6 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Nd6+ Bxd6 g7 Kxc7 g8=Q Bb4 Qc4+ Kb8 Qd4 Kc8 Kg6 Kd8 Qxe4 Kc7 Qf4+ Kc8 Qe5 d6 Qe4 Kc7
39   +9.82   01:06 705581K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Bb4 g8=Q+ Kc7 Qd5 Kc8 Kg6 Kc7 Qd4 Kd8
40  +10.06   01:23 905298K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Bb4 g8=Q+ Kc7 Qd5 Kc8 Kg6 Kc7 Qd4 Kd8 Qxe4 Kc7 Qf4+ Kc8 Qe5 d6 Qd5 Bc5 Kf6 Bb4 Ke6 Kb8 d3
Parent - - By user923005 (****) [us] Date 2018-11-28 21:58
Ran a bit longer:

Searching:
8/1p1pNpbk/1q1P4/pP2p2K/P3N3/4P1P1/3P4/8 w - -

infinite: 0 ponder: 0 time: 0 increment: 0 moves to go: 0
1   +8.44   00:02      54  Ng5+
2   +8.44   00:02      85  Ng5+ Kh8
3   +8.73   00:02     133  Ng5+ Kh8 Nxf7+
4   +8.73   00:02     199  Ng5+ Kh8 Nxf7+ Kh7
5   +8.73   00:02     300  Ng5+ Kh8 Nxf7+ Kh7 Ng5+
6   +8.73   00:02     438  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8
7   +8.48   00:02    1193  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8 Ng6+ Kg8
8   +1.74   00:02    7274  Ng5+ Kh8 Nxf7+ Kh7 Ng5+ Kh8 d4 Bh6 Nc8 Bxg5
9   +3.92   00:02   12405  Ng5+ Kh8 Nxf7+ Kh7 d4 Bf8 Nc8 Qxd4 exd4 exd4 Ne5
10   +1.74   00:02   26022  Ng5+ Kh8 Nxf7+ Kh7 Ng5+
11   +2.55   00:02   41663  Nc8 Qd8 Ng5+ Qxg5+ Kxg5 Kg8 Nb6 Bf8 Nc4 Kg7 Kf5 f6 g4 Kf7
12   +3.07   00:02   60066  Nc8 Qd8 Ng5+ Qxg5+ Kxg5 f6+ Kf5 Kh6 Nb6 Bf8 Kxf6 Bxd6 Nc4 Bc7
13   +3.76   00:02  107412  Nc8 Qd8 Ng5+ Qxg5+ Kxg5 f6+ Kf5 Kg8 Nb6 Bf8 Nc4 Kf7 Nxa5 Bxd6 Nxb7 Bb4 d4
14   +4.00   00:02  140063  Nc8 Qd8 Ng5+ Qxg5+ Kxg5 f6+ Kf5 Kg8 Nb6 Bf8 Nc4 Kf7 Nxa5 Bxd6 Nxb7 Bb4 d4 exd4 exd4 Bc3 Nc5
15   +4.04   00:02  190708  Nc8 Qd8 Ng5+ Qxg5+ Kxg5 Kg8 Nb6 Bf8 Nc4 Kg7 Nxa5 Bxd6 Nxb7 Bb4 d3 Bd2 Kf5
16   +3.96   00:02  363546  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 f6 Kg6 Bh8 g4 Kc8 Nxf6 Bxf6 Kxf6 Kd8 Kxe5 Kc8
17   +2.63   00:02  450632  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 Ng5 f6 Nf7 Qxc7 bxc7 b5 axb5 a4 Nd8 Bf8 b6 Bxd6
18   +3.76   00:02  582930  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 Ng5 Qxc7 dxc7 Bf8 Nxf7 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Nxe5 Kxc7 Kg5
19   +3.56   00:02  698011  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 Ng5 Qxc7 dxc7 Bf8 Nxf7 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Kg5 e4 Kf6 Kxc7 Ng5 b5 axb5 Kb6
20   +3.56   00:02  852691  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 Ng5 Qxc7 dxc7 Bf8 Nxf7 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Kg5 e4 Kf6 Kxc7 Ng5 b5 axb5 Kb6
21   +3.56   00:02  913464  Nc8 Qd8
22   +1.82   00:02   1495K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 Ng5 Bf8 Nxf7 Bxd6 Nxd6+ Kd8 Ne8 Ke7 d3 Qxe8+ Nxe8 Kxe8 g4 Ke7 g5 Kf7 Kg4
23   +2.83   00:03   2039K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 Nxb7+ Ke7 g6 Be5 Nxa5
24   +3.27   00:03   2580K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 Nxb7+ Ke7 g6 Be5 Nxa5 Bg7 Kg5 Ke6 Nb3 Ke7
25   +3.03   00:03   3151K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 Nxb7+ Ke7 g6 Kf8 Kh6 Be5 Nxa5
26   +5.17   00:04   8419K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 f5 Kg6 f4 Ng5 fxg3 Kxg7 g2 Nf3 e4 Ng1 Kc8 Kf6 Kd8 Ke5 Kc8 Kxe4 Kd8 Kf3 Kc8 Kxg2 Kd8 Nf3
27   +5.41   00:04  14309K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Ke7 Nc8+ Kf7 Nxa7 Kg7 Nb5 b6 Nd4
28   +6.46   00:07  36746K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Ke7 Nc8+ Kf8 Nxa7 d5 Nb5 Kf7 Nc7 Kg7 Nxd5
29   +7.52   00:10  72374K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 Bf8
30   +7.43   00:12  96035K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f5 Kg6 Bb2 Nf7+ Kc8 Kxf5 Ba3 Nb5 Qa8 Na7+ Kb8 Ne5 Qxa7 Nxd7+ Ka8 bxa7 Kxa7 g4 b5 axb5 Kb7 g5 Kc8 Nb6+ Kd8 Nc4 Bc5 g6
31   +7.60   00:14 110572K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f5 Kg6 Bb2 Nf7+ Kc8 Kxf5 Ba3 Nb5 Qa8 Na7+ Kb8 Ne5 Qxa7 Nxd7+ Ka8 bxa7 Kxa7 g4 b5 axb5 Bxd6 g5 a4 g6 Bf8 Nxf8 a3 g7 a2 g8=Q a1=Q Qc4
32   +7.72   00:16 129902K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f6 Nf7+ Kc8 Kg6 Qxc7 dxc7 Bf8 Kxf6 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Nd6+ Kxc7 Kf7 Bxd6 g7 Bb4 g8=Q Bxd2 Qg3+ Kc6 Qg6+ Kc7 Qxe4 Bb4 Qd5
33   +8.61   00:24 218912K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5
34   +8.85   00:28 269249K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f6 Nf7+ Kc8 Kg6 Qxc7 dxc7 Bf8 Kxf6 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Nd6+ Kxc7 Kf7 Bxd6 g7 Bb4 g8=Q Bxd2 Ke8 Bb4 Qc4+ Kd6 Qxe4 Kc7 Qc4+ Kd6 e4 Ke5 Qd5+
35   +9.09   00:34 338542K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f5 Kg6 Bb2 Nf7+ Kc8 Kxf5 Ba3 Nb5 Qa8 Na7+ Kb8 Ne5 Qxa7 Nxd7+ Ka8 bxa7 Kxa7 g4 b5 axb5 Bxd6 g5 a4 g6 Bf8 Nxf8 a3 g7 a2 g8=Q a1=Q Qc4 Qg7 Qc5+ Kb8 Qb6+ Qb7 Nd7+ Kc8 Qxb7+ Kxb7
36   +9.01   00:36 354343K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f5 Kg6 Bb2 Nf7+ Kc8 Kxf5 Ba3 Nb5 Qa8 Na7+ Kb8 Ne5 Qxa7 Nxd7+ Ka8 bxa7 Kxa7 g4 b5 axb5 Bxd6 g5 a4 g6 Bf8 Nxf8 a3 g7 a2 g8=Q a1=Q Qc4 Qg7 Qc5+ Kb8 Qb6+ Qb7 Nd7+ Kc8 Qxb7+ Kxb7 Kxe4 Kc7 Ne5
37   +9.29   00:47 483833K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Ke7 g8=Q Bb4 Qg7+ Kd8 Qg5+ Kc8 Qd5 Kd8 Kg6 Ke8 Qxe4+ Kf8 d4
38   +9.82   01:03 676089K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 e4 Ng5 f6 Nf7+ Kc8 Kg6 Qxc7 dxc7 Bf8 Kxf6 Bc5 g4 Bxb6 g5 Bc5 g6 Bf8 Nd6+ Bxd6 g7 Kxc7 g8=Q Bb4 Qc4+ Kb8 Qd4 Kc8 Kg6 Kd8 Qxe4 Kc7 Qf4+ Kc8 Qe5 d6 Qe4 Kc7
39   +9.82   01:06 705581K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Bb4 g8=Q+ Kc7 Qd5 Kc8 Kg6 Kc7 Qd4 Kd8
40  +10.06   01:23 905298K  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Bb4 g8=Q+ Kc7 Qd5 Kc8 Kg6 Kc7 Qd4 Kd8 Qxe4 Kc7 Qf4+ Kc8 Qe5 d6 Qd5 Bc5 Kf6 Bb4 Ke6 Kb8 d3
41  +10.06   01:32   1011M  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Bb4 g8=Q+ Kc7 Qd5 Kc8 Kg6 Kc7 Qd4 Kc6 Qxe4+ Kc7 Qf4+ Kc8 Qe5 d6 Qd5 Bc5 Qe4 Kb8 Kf6 Bb4 Qd5 Kc7 Ke6
42  +10.83   02:44   1868M  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Bb4 g8=Q+ Kc7 Qd5 Kc8 Kg6 Kc7 Qd4 Kc6 Qxe4+ Kc7 Qf4+ Kc8 Qe5 d6 Qd5 Bc5 d4 Bb4 Kf6 Kb8 e4 Kc7 e5 dxe5 dxe5 b6 e6 Bc3+ Kf7
43  +11.03   03:13   2207M  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Bb4 g8=Q+ Kc7 Qd5 Kc8 Kg6 Kc7 Qd4 Kc6 Qxe4+ Kc7 Qf4+ Kc8 Qe5 d6 Qd5 Bc5 d4 Bb4 Kf6 Kb8 e4 Kc8 e5 dxe5 dxe5 Kc7 e6 Bc3+ Kf7
44  +11.35   04:05   2816M  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Bb4 g8=Q+ Kc7 Qd5 Kc8 Kg6 Kc7 Qd4 Kc6 Qxe4+ Kc7 Qf4+ Kc8 Qe5 Kd8 Qb8+ Ke7 Qxb7 Bxd2 Qe4+ Kd8 Kf7 Be1 Qh1 Bg3 Qb7 Bh2 Qb6+ Bc7 Qf6+ Kc8
45  +12.16   06:25   4446M  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Bb4 g8=Q+ Kc7 Qd5 Kc8 Kg6 Kc7 Qxe4 Kb6 Qc4 d6 d4 Ka7 Kf6 Bd2 e4 Bb4 Qd5
46  +15.68   21:15  15244M  Nc8 Qd8 Ng5+ Kg8 Ne7+ Kf8 Nh7+ Ke8 Nd5 Qb8 Nc7+ Kd8 b6 Kc8 g4 e4 Ng5 Bf8 Nxf7 Bxd6 Nb5 Bc5 Na7+ Qxa7 bxa7 Bxa7 Nd6+ Kd8 g5 Bb8 g6 Bxd6 g7 Bb4 g8=Q+ Kc7 Qd5 Kc8 Kg6 Kc7 Qxe4 Kb6 Qc4 d6 d4 Ka7 e4 Ka8 Kf6 Ba3 Qg8+ Ka7 Qd5 b6 Qc6 Bb4 Qc7+ Ka8 Qc8+ Ka7 Qc6
Parent - - By dorszcz (*) Date 2018-11-30 18:52
You have really fast machine... first position in 4 seconds, but the last one is really hard. Sting is good in these kind of positions.
Do you use Houdini 6 or Komodo 12 for analysis?
Parent - - By user923005 (****) [us] Date 2018-11-30 19:43
Yes, I use both of them.
I especially use Houdini 6 Tactical 1 for hard to solve positions.

The machine I used to solve these is not among my strong ones.

I have a 64 core machine and one with 128 cores ( but the 128 core machine is actually 4 32 core servers in one box).
I plan to buy a nice AMD machine once the 7nm stuff comes out early in 2019.
Parent - - By dorszcz (*) Date 2018-11-30 20:13
Did you use Houdini for any position I posted? Can it find Nc8?
Parent - - By user923005 (****) [us] Date 2018-11-30 21:16
When you say, "Any positions I posted?" do you mean in this post or in all the posts?
Parent - By dorszcz (*) Date 2018-11-30 21:44
Let's say all positons.
You mentioned only about results of Stockfish and Sting
Parent - By dorszcz (*) Date 2018-12-01 17:09
position 1 - my position
position 2 - slightly modified position I found in the internet
position 3 - from playchess
position 4 - from old magazine Shakhmaty
Up Topic The Rybka Lounge / Test Positions / 4 hard positions

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