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Up Topic The Rybka Lounge / Test Positions / TCEC Game of the stage 2.
- - By Lazy Frank (****) [lv] Date 2015-10-08 10:24 Edited 2015-10-08 17:18
Stockfish - Komodo.

r1bqrbk1/pp3ppp/1n1p4/3P1PP1/2p1N2Q/2PnN3/P2B2BP/4RRK1 w - - 5 27


Stockfish on Martin 20-cores machine after 5 min 36 sec. (depth 33) played Rb1.

Can someone engine found Re2?

Excellent line - Re2 (!!) Ne5 h3 (!!)

r1bqrbk1/pp3ppp/1n1p4/3PnPP1/2p1N2Q/2P1N2P/P2BR1B1/5RK1 b - - 0 28
Parent - By user923005 (****) [us] Date 2015-10-10 03:56
J. Ellis stockfish with mate detection (works good on tactical problems too):

Searching:
r1bqrbk1/pp3ppp/1n1p4/3P1PP1/2p1N2Q/2PnN3/P2B2BP/4RRK1 w - - 0 1

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

1   +0.05   00:00      92  Nf6+ gxf6
2   +0.05   00:00     189  Nf6+ gxf6
3   +0.40   00:00     546  Rb1 h6 f6
4   +0.57   00:00    1305  Rb1 Kh8 f6 Qd7
5   +0.52   00:00    2067  Rb1 Kh8 f6 g6 Bf3
6   +0.48   00:00    7673  Rd1 Kh8 Rb1 Re5 f6 Qd7
7   +0.44   00:00   11134  Ra1 Kh8 Rab1 Re5 f6 g6 Rfd1
8   +0.58   00:00   19063  Rb1 Kh8 f6 g6 Nf2 Bd7 Nxc4 Nxc4
9   +0.75   00:00   30734  Rb1 Kh8 f6 g6 Nf2 Bd7 Nxd3 cxd3 Be4
10   +0.88   00:00  118493  Rb1 Kh8 a4 Nxa4 Nxc4 Nac5 Nxc5 Nxc5 f6 Qc7
11   +0.56   00:00  189154  Rb1 Kh8 f6 g6 Nf2 Nc5 Nfg4 Bd7 Nh6 Bxh6 Qxh6 Rg8 h4
12   +0.59   00:00  268991  Rb1 Re5 Rf3 h6 f6 Rxe4 Qxe4 Ne5 fxg7 Nxf3+ Qxf3 Bxg7 gxh6 Bxh6
13   +0.83   00:00  658856  Rb1 Ne5 Be1 Bd7 Bg3 Nd3 Qh5 Kh8 h4 g6 fxg6 fxg6 Qf3 a5
14   +0.65   00:00   1048K  Rb1 Ne5 Be1 Bd7 Bg3 Rb8 h3 Kh8 Qh5 Rc8 f6 g6 Qe2 Qc7 h4 h5
15   +1.03   00:00   2250K  Rb1 Rb8 Qg3 Ne5 f6 g6 h4 Qd7 h5 gxh5 Qh4 Nd3 Qxh5 Re5 Kh1 Kh8
16   +0.85   00:01   6195K  Rb1 Ne5 Be1 Bd7 Bg3 Rb8 h3 Kh8 Qh5 Ra8 Ng4 g6 Nxe5 dxe5 fxg6 fxg6 Rxf8+ Rxf8 Bxe5+ Kg8
17   +0.88   00:01   7708K  Rb1 Ne5 Be1 Kh8 Bg3 Na4 Rfd1 h6 Qh5 g6 fxg6 fxg6 Bxe5+ Rxe5 Qxg6 Nxc3 Nxc4
18   +0.86   00:01   9058K  Rb1 Ne5 Be1 Kh8 Bg3 Na4 Qh5 b6 g6 fxg6 fxg6 h6 Nf5 Bxf5 Rxf5 Qd7 Rbf1 Rad8 Bxe5
19   +0.92   00:04  21814K  Rb1 Rb8 Qg3 Ne5 h4 Na4 h5 Nc5 Nxc5 dxc5 f6 Qd6 fxg7 Bxg7 h6 Bf8 Rf6 Qd8 Be4 b5 Rbf1 Kh8
20   +0.99   00:05  25925K  Rb1 Rb8 Qg3 Ne5 h4 Na4 h5 Nc5 Nxc5 dxc5 f6 gxf6 gxf6+ Kh8 Be4 Qd6 Qg2 b5 Nf5 Bxf5 Rxf5
21   +0.91   00:06  36176K  Rb1 Re5 Ng4 Nxd5 Rb5 Rxf5 Rxd5 Rxf1+ Bxf1 Bxg4 Bxd3 Qb6+ Nf2 cxd3 Qxg4 Qb1+ Kg2 Qxa2 Rxd3 Re8 c4 Re5 Qf4 Be7 h4
22   +0.85   00:07  41558K  Rb1 Re5 Ng4 Nxd5 Rb5 Rxe4 Bxe4 Nc7 f6 g6 Rbb1 Qd7 Nh6+ Bxh6 Qxh6 Qg4+ Bg2 Ne6 Qh3 Qxh3 Bxh3 b6 Bg2 Rb8 Bd5 Ba6 Kg2
23   +0.94   00:11  63753K  Rb1 Ne5 Qh3 Na4 Rf4 Nc5 Nxc5 dxc5 Rh4 h6 gxh6 g6 Rf1 Bd6 Be4 Be7 Rg4 Bg5 Rg3 Bh4 Qg2 Bxg3 fxg6
24   +0.96   00:17  96739K  Rb1 Nd7 Nxc4 b5 f6 g6 Nexd6 bxc4 Nxf7 Qa5 Nh6+ Kh8 d6 Qc5+ Qd4 Rb8 Rxb8 Nxb8 Bd5 Re2 Nf7+ Kg8 Ne5+ Kh8 Qxc5 Nxc5 Bf4 Bb7 Bxb7 Nxb7
25   +0.75   00:29 168703K  Rb1 Nd7 Ng4 N3c5 Nxc5 Nxc5 Qh5 Nd3 g6 fxg6 fxg6 h6 Bxh6 Bxg4 Qxg4 Qc8 Qxc8 Raxc8 Bg5 Re5 Bh4 Nc5 Rf7 Rce8 Rbf1 Re2 Bf2 Rxa2 Be3 a5 Bxc5 dxc5 Rxb7
26   +0.92   00:37 217238K  Rb1 Nd7 Ng4 N3c5 Nxc5 Nxc5 Qh5 Nd3 g6 fxg6 fxg6 h6 Bxh6 Bxg4 Qxg4 Qc8 Qxc8 Raxc8 Bg5 Nc5 Bh3 Rb8 Rf3 Be7 Be3 Bf6 Bxc5 dxc5 Be6+ Kf8 Re1 Red8 d6 Rxd6 Bxc4
27   +0.86   00:42 246349K  Rb1 Nd7 Ng4 N3c5 Nxc5 Nxc5 Qh5 Nd3 g6 fxg6 fxg6 h6 Bxh6 Bxg4 Qxg4 Qc8 Qxc8 Raxc8 Bg5 Nc5 Bh3 Rb8 Rf3 Be7 Be3 Bf6 Bxc5 dxc5 Be6+ Kf8 Re1
28   +0.76   01:22 494239K  Rb1 Nd7 Ng4 N3c5 Nxc5 Nxc5 Qh5 Qc7 g6 fxg6 fxg6 hxg6 Qxg6 Bxg4 Qxg4 Re7 Rf5 Re5 Rxe5 dxe5 Kh1 Bd6 Be3 Rf8 Bxc5 Bxc5 d6 Qxd6 Rxb7 Rf7 Rxf7 Kxf7 Qxc4+ Kf8 Qg4
29   +0.80   02:33 927673K  Rd1 Re5 Rb1 Nc5 Nxc5 dxc5 Rbe1 Bd7 Ng4 Rxe1 Bxe1 Nc8 Be4 Nd6 Bc2 Qc8 g6 h6 Bg3 fxg6 Nf6+ Kh8 Nxd7 Qxd7 fxg6 Be7 Qf4 Rd8 Re1 Bf6 Qe3
30   +0.60   06:21   2298M  Ra1 Nd7 Nxc4 N7c5 Be3 b6 Ncd2 Re5 f6 g6 Bd4 Rf5 c4 Qd7 a4 Rxf1+ Bxf1 Qg4+ Qxg4 Bxg4 a5 Re8 axb6 axb6 Nf2 Nxf2 Kxf2 Bf5 h4 h6 Ra7 Ne4+ Nxe4 Rxe4 Bxb6 Rf4+ Ke1 Rxh4
31   +1.14   14:45   5318M  Re2 Re5 Rf3 Kh8 Rh3 h6 gxh6 Qxh4 hxg7+ Kxg7 Rxh4 Be7 Rh3 Kf8 Rg3 Nf4 Rf2 Nxg2 Rfxg2 Ke8 Rg8+ Kd7 Nf2 Bh4 Nfg4 Re8 Rg7 Rf8 Nh6 Bf6 Rxf7+ Rxf7 Nxf7 Ke7 Nh6 Bd7 Ng8+ Kf7 Nxf6 Kxf6
32   +1.34   17:32   6243M  Re2 Re5 Rf3 Rxe4 Qxe4 Ne5 Rg3 g6 Rf2 Nbd7 fxg6 hxg6 Nxc4 Nxc4 Qxc4 Ne5 Qe2 Bf5 Be3 Bg7 Bd4 Qd7 Be4 Bg4 Qc2 b6 Rf4 Bh5 c4 Rc8 Rc3 Bg4 h4 Bh5
33   +1.30   21:54   7761M  Re2 Re5 Rf3 Rxe4 Qxe4 Ne5 Rg3 g6 Rf2 Nbd7 fxg6 hxg6 Nxc4 Nxc4 Qxc4 Ne5 Qe2 Bf5 Be3 Bg7 Bd4 Qd7 Be4 Bg4 Qe3 b6 Qf4 Bh5 Bc2 Rc8 h4 Qb7 Be4 Rc4 Rgg2 Rc8 Rh2 Qe7 Rhg2
34   +1.26   22:36   7993M  Re2 Re5 Rf3 Rxe4 Qxe4 Ne5 Rg3 g6 Rf2 Nbd7 fxg6 hxg6 Nxc4 Nxc4 Qxc4 Ne5 Qe2 Bf5 Be3 Bg7 Bd4 Qd7 Be4 Bg4 Qc2 Bh5 Rf4 b6 c4 Rc8 Rc3 Bg4 h4 Bh5 Qg2 Rxc4 Rxc4 Nxc4 Bxg7 Kxg7
35   +1.28   25:13   8889M  Re2 Re5 Rf3 Rxe4 Qxe4 Ne5 Rg3 g6 Rf2 Nbd7 fxg6 hxg6 Nxc4 Nxc4 Qxc4 Ne5 Qb3 Bf5 c4 Rc8 Bf1 Bg7 Bc3 b6 h4 Nd7 Bxg7 Kxg7 Bh3 Bxh3 Rxh3 Ne5 Rf4 Kf8 Rc3 Qc7 Kg2 a6 Qa4 b5 Qxa6 bxc4
36   +1.43   35:13  12194M  Re2 Re5 Rf3 Rxe4 Qxe4 Bd7 f6 g6 h4 Qe8 Nxc4 Ne5 Nxe5 dxe5 Qxe5 Bc5+ Kh1 Qxe5 Rxe5 Nc4 Re2 Bg4 Bf4 Kf8 Re1 Bxf3 Bxf3 Re8 Rxe8+ Kxe8 Kh2 Bd6 Bxd6 Nxd6 Kg3 Kd7 Kf4 Kc7 Be2 Nf5 h5 Kd6 c4
37   +1.55   52:02  17430M  Re2 Re5 Rf3 Rxe4 Qxe4 Ne5 Rg3 g6 Rf2 Nbd7 Qh4 Nc5 fxg6 fxg6 Nxc4 Nxc4 Qxc4 Bg7 Be3 Bf5 Qh4 Qe7 Bxc5 dxc5 Qc4 Qd6 Re3 Rd8 Rfe2 Bd7 a4 h5 gxh6 Bxh6 Rf3 Bf5 Qh4 g5 Qf2 Bg6
Nodes: 19944912630
Nodes/second: 5539908
Best move: Re2
Ponder move: Re5
Parent - By LZ (**) [us] Date 2015-10-31 10:58
Stockfish-YBW sticks with Rb1. Maybe Stockfish-lazy_smp will choose differently.

info depth 42 seldepth 70 multipv 1 score cp 126 nodes 140714156721 nps 32215472 hashfull 999 tbhits 0 time 4367906 pv e1b1 b6d7 e3g4 d3e5 d2e3 e5g4 h4g4 f7f6 g4h4 b7b6 b1e1 e8e5 g5f6 d7f6 e3d4 c8d7 e4g5 a8c8 d4e5 d6e5 g5e6 d8e7 e1e5 b6b5 f1e1 a7a5 h4g5 c8e8 e6f8 e7c5 g5e3 c5e3 e1e3 g8f8 a2a3 e8e5 e3e5 f6g4 e5e2 g4h6 f5f6 g7f6 g1f2 h6f7 f2g3 d7f5 e2e1 f7d6 g2f3 f5d7 g3f4 f8f7 f3d1 d7f5
- - By Lazy Frank (****) [gb] Date 2016-03-29 18:15
Finally i got the time. :lol:

Let's check what engines play today for this position! (start position 27 white move).

Stockfish - Komodo 9.3


[Event "TCEC Season 8 - Stage 2"]
[Site "Raivis"]
[Date "2016.03.28"]
[Round "1"]
[White "Stockfish"]
[Black "Komodo 9.3"]
[TimeControl "0+0"]
[SetUp "1"]
[FEN "r1bqrbk1/pp3ppp/1n1p4/3P1PP1/2p1N2Q/2PnN3/P2B2BP/4RRK1 w - - 0 27"]
[Termination "normal"]
[PlyCount "11"]
[WhiteType "engine"]
[BlackType "engine"]

27. Re2 Ne5 28. h3 Bd7 29. Qh5 Ba4 30. Ref2 Nbd7 31. Rf4 g6 32. Qh4

Parent - - By kgburcham (***) [us] Date 2016-03-29 21:24
r1bqrbk1/pp3ppp/1n1p4/3P1PP1/2p1N2Q/2PnN3/P2B2BP/4RRK1 w - -


Engine: Komodo 9.42 64-bit (8192 MB)
by Don Dailey, Larry Kaufman, Mark Lefler
Threads now set to 8


29.01   1:26   +0.35--  1.Rb1 Ne5 (1.675.270.775) 19328
29.01   1:30   +0.31   1.Rb1 Ne5 2.Rf4 Nbd7 3.Qh3 f6 4.Rh4 fxg5 (1.729.398.945) 19215
29.02   1:59   +0.43++  1.Re2 Bd7 2.Rf3 (2.196.021.795) 18383
29.01   2:36   +0.65++  1.Re2 Ne5 2.Qh5 (2.785.100.086) 17778
29.01   3:04   +0.82   1.Re2 Ne5 2.Rf4 Nbd7 3.Qh3 g6 4.Rh4 h5 5.gxh6 Kh8 6.Kh1 b5 7.Qg3 Be7 8.Rh3 Rg8 9.Qf4 g5 10.Qg3 Nf6 11.Nxf6 Bxf6 12.Be4 g4 13.Rh5 Bb7 14.Nc2 (3.225.091.406) 17493
30.01   3:22   +0.89++  1.Re2 Ne5 2.Rf4 (3.531.690.005) 17416
30.01   3:38   +0.96++  1.Re2 Bd7 2.Rf3 (3.785.003.003) 17357
30.01   3:55   +1.06++  1.Re2 Ne5 2.Rf4 (4.079.190.806) 17293
30.01   4:07   +0.97--  1.Re2 Ne5 (4.259.324.887) 17243
30.01   4:34   +1.09++  1.Re2 Ne5 2.Rf4 (4.713.441.887) 17161
30.01   4:35   +1.09   1.Re2 Ne5 2.Rf4 Nbd7 3.Qh3 g6 4.Kh1 a5 5.Rh4 h5 6.gxh6 Be7 7.Rf4 Nf6 8.Rf1 Bd7 9.Ng5 Rf8 10.Nf3 Nd3 11.Nd4 Ne5 12.Nec2 Kh8 13.Bf4 Nh5 14.Bxe5+ (4.723.051.555) 17161
31.01   5:25   +1.16++  1.Re2 Ne5 2.Rf4 (5.579.071.805) 17131
Parent - - By Lazy Frank (****) [gb] Date 2016-03-30 01:03 Edited 2016-03-30 01:45
Yes, Komodo prefered playing line was 27. Re2 Ne5 28. Rf4 Nbd7 29. Qh5 g6 30. Qh4 a6 31. h3.

But i like and agree with Stockfish line 27. Re2 Ne5 28. h3.
1) more patience to prepare king attack and "pathetic" move :roll:

http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=30979

2) bring right rook to square f4 at right time.

Even in Stockfish line Komodo after Ba4 expect Rf4 with value -1.55.
After unexpected Ref2 Komodo fails to -2.20.

Note: Average Komodo game depth ~ 39
Parent - By Lazy Frank (****) [gb] Date 2016-04-03 11:38 Edited 2016-04-05 05:49

[Event "TCEC Season 8 - Stage 2"]
[Site "Raivis"]
[Date "2016.03.28"]
[Round "1"]
[White "Stockfish"]
[Black "Komodo 9.3"]
[Result "1-0"]
[TimeControl "0+0"]
[SetUp "1"]
[FEN "r1bqrbk1/pp3ppp/1n1p4/3P1PP1/2p1N2Q/2PnN3/P2B2BP/4RRK1 w - - 0 27"]
[Termination "normal"]
[PlyCount "31"]
[WhiteType "engine"]
[BlackType "engine"]

27. Re2 Ne5 28. h3 Bd7 29. Qh5 Ba4 30. Ref2 Nbd7 31. Rf4 g6 32. Qh4 Kh8 33.
Ng4 Bc2 34. Be3 Nxg4 35. hxg4 Bxe4 36. Bxe4 Ne5 37. Bd4 h6 38. fxg6 Qxg5
39. Qxg5 hxg5 40. Rxf7 Bg7 41. Rxb7 Rab8 42. Rxa7

- By Lazy Frank (****) [gb] Date 2016-04-09 10:07
Full game PGN script:

[Event "Replay TCEC Stage 2 Game"]
[Site "Raivis"]
[Date "?"]
[Round "?"]
[White "Stockfish"]
[Black "Komodo 9.3"]
[Result "1-0"]
[Variation "Benko-Pirc Variation, 1.g3 Nf6 2.Bg2 g6 3.e4 d6 4.d4 Bg7 5.Ne2 O-O"]
[TimeControl "0+0"]
[SetUp "1"]
[FEN "r1bqrbk1/pp3ppp/1n1p4/3P1PP1/2p1N2Q/2PnN3/P2B2BP/4RRK1 w - - 0 27"]
[Termination "normal"]
[PlyCount "77"]
[WhiteType "engine"]
[BlackType "engine"]

27. Re2 {(Rb1) +0.01/127 1} Ne5 {(Re5) -0.01/39 1} 28. h3 {(Rf4) +0.01/127
1} Bd7 {(a5) -0.01/38 1} 29. Qh5 {+0.01/41 1} Ba4 {-0.01/38 1} 30. Ref2
{(Rf4) +0.01/40 1} Nbd7 {-0.01/39 1} 31. Rf4 {+0.01/40 1} g6 {-0.01/39 1}
32. Qh4 {+0.01/41 1} Kh8 {(Bg7) -0.01/40 1} 33. Ng4 {+0.01/37 1} Bc2
{-0.01/39 1} 34. Be3 {+0.01/38 1} Nxg4 {-0.01/40 1} 35. hxg4 {+0.01/42 1}
Bxe4 {-0.01/43 1} 36. Bxe4 {(Bd4+) +0.01/44 1} Ne5 {-0.01/44 1} 37. Bd4
{+0.01/47 1} h6 {-0.01/48 1} 38. fxg6 {+0.01/45 1} Qxg5 {-0.01/47 1} 39.
Qxg5 {+0.01/51 1} hxg5 {-0.01/46 1} 40. Rxf7 {+0.01/51 1} Bg7 {-0.01/48 1}
41. Rxb7 {+0.01/48 1} Rab8 {-0.01/48 1} 42. Rxa7 {+0.01/55 1} Ra8 {-0.01/50
1} 43. Rc7 {(Rb7) +0.01/50 1} Rac8 {-0.01/43 1} 44. Rxc8 {(Rb7) +0.01/44 1}
Rxc8 {-0.01/45 1} 45. Kg2 {(Bxe5) +0.01/44 1} Ra8 {-0.01/46 1} 46. Kg3
{+0.01/49 1} Rxa2 {(Rb8) -0.01/46 1} 47. Rb1 {+0.01/47 1} Ra8 {-0.01/48 1}
48. Bf5 {(Rb6) +0.01/46 1} Kg8 {(Nxg6) -0.01/40 1} 49. Rb6 {(Rb8+) +0.01/52
1} Rd8 {-0.01/37 1} 50. Be3 {+0.01/59 1} Rf8 {(Bh6) -0.01/33 1} 51. Bxg5
{+0.01/49 1} Re8 {(Nxg6) -0.01/33 1} 52. Rxd6 {+0.01/58 1} Bf8 {(Rb8)
-0.01/28 1} 53. Rb6 {+0.01/68 1} Bc5 {(Bg7) -0.01/28 1} 54. Rb7 {+0.01/87
1} Nxg6 {-0.01/29 1} 55. Bxg6 {+0.01/94 1} Rf8 {(Bd6+) -0.01/30 1} 56. Bf5
{+0.01/124 1} Kh8 {(Bd6+) -0.01/31 1} 57. Kh4 {(Bh6) +0.01/127 1} Bg1
{(Bf2+) -0.01/38 1} 58. Kh5 {+0.01/127 1} Bh2 {-0.01/44 1} 59. Be6 {(Rh7+)
+0.01/127 1} Be5 {(Bf4) -0.01/97 1} 60. Kg6 {+0.01/127 1} Bg7 {-0.01/99 1}
61. Be7 {(d6) +0.01/127 1} Rf2 {(Rg8) -0.01/99 1} 62. Rb8+ {+0.01/127 1}
Bf8 {-0.01/99 1} 63. Bf5 {+0.01/127 1} Rxf5 {-0.01/99 1} 64. gxf5
{+0.01/127 1} Kg8 {-0.01/5 1} 65. Rxf8# {+0.01/127 1} 1-0



Average Stockfish game depth reported by Arena GUI=44.625.
Average Komodo game depth reported by Arena GUI=43.125.

Two facts that's surprise me:

1) Move 56. ... Kh8. Komodo not see mate in 11 and got mate in 9.
2) Really after 27. Re2 black is forced lost the game so fast?
Up Topic The Rybka Lounge / Test Positions / TCEC Game of the stage 2.

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