another interesting position (endgame knowledge, pawns)

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mclane
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another interesting position (endgame knowledge, pawns)

Post by mclane » Tue Apr 17, 2012 1:04 am

[D]4k3/8/6p1/B1P5/7p/1n5P/6P1/7K w - -

position came after

[Event "*"]
[Site "*"]
[Date "2011.01.27"]
[Round "-"]
[White "*"]
[Black "*"]
[WhiteElo "*"]
[BlackElo "*"]
[Result "*"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2
Nf6 7. O-O Bc5 8. Kh1 b5 9. f4 Bb7 10. Bf3 O-O 11. e5 Bxf3
12. Nxf3 Ng4 13. Ne4 Be7 14. Nfg5 f5 15. exf6 Nxf6 16. Qd3
g6 17. Qh3 h5 18. Nxf6+ Bxf6 19. Qd3 Kg7 20. Ne4 Nc6 21. c3
Be7 22. Be3 d5 23. Nd2 Rf5 24. Nf3 Bf6 25. a4 bxa4 26. Rxa4
a5 27. h3 h4 28. Bf2 Rh8 29. Re1 Kf7 30. Qd2 Qb8 31. Qe2
Qd6 32. Nh2 Bg7 33. Ng4 Qd7 34. Qd1 Rfh5 35. Rae4 Re8
36. R4e3 Rf5 37. Qa4 Rh5 38. R3e2 Qc7 39. Qb5 Qd7 40. Qd3
Qd6 41. b3 Qd7 42. c4 Re7 43. Rd2 Qd6 44. Rdd1 Rc7 45. Qf3
Kg8 46. Qe4 Ne7 47. c5 Qd7 48. Qxe6+ Qxe6 49. Rxe6 Kf7
50. Rd6 d4 51. Ne5+ Bxe5 52. fxe5 Rxe5 53. Bxd4 Re6 54. Bf2
Nf5 55. Rd7+ Rxd7 56. Rxd7+ Ke8 57. Rd1 Re2 58. Re1 Nd4
59. Rxe2+ Nxe2 60. Be1 Nd4 61. Bxa5 Nxb3 62. Bb6 Nd4
63. Kg1 Kd7 64. Kf2 Ke6 65. Ke3 Ke5 66. Bc7+ Kd5 *

In move 62 program should understand that it has to defend c pawn and NOT play Be1 and exchange the good c pawns for h4 pawn.

when i remember it right (its a correspondance/mail-chess game my friend analysed long time ago)
houdini, strelka, critter, firebird and all the other rybka clones do not find it. shredder is not finding it.

stockfish 2.2.2 finds it. i think crafty versions also find it.

Hiarcs13.3 on my ipad2 is finding Bb6 in an instant.

IMO human chess players would all see very early that white has to rescue/defend the c5 passed-pawn.

its very strange that some chess programs have no clue about the position, while others see it.
What seems like a fairy tale today may be reality tomorrow.
Here we have a fairy tale of the day after tomorrow....

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Ajedrecista
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Re: Another interesting position (endgame knowledge, pawns).

Post by Ajedrecista » Tue Apr 17, 2012 8:38 am

Hello:

Quazar 0.4 w32 (single core) solves this position (62.- Bb6) at depth 42 (it also liked 62.- Be1 until depth 41), running in console mode (maybe with 32 MB of hash) in an Intel i5-760 (at 2.8 GHz):

[d]4k3/8/6p1/B1P5/7p/1n5P/6P1/7K w - - 0 1

Code: Select all

info multipv 1 depth 46 time 2309829 score cp 267 nodes 1844012823 nps 798333
pv a5b6 e8d7 h1g1 b3d4 g1f2 d4c2 f2e2 d7c6 e2d2 c2b4 d2e3 b4c2 e3f4 c2e1 b6a5 g6g5 f4g5 e1g2 a5b6 c6d5 g5g4 d5c6 g4h5 c6d5 b6a7 d5c6 h5g5
Regards from Spain.

Ajedrecista.

MikeGL
Posts: 962
Joined: Thu Sep 01, 2011 12:49 pm

Re: another interesting position (endgame knowledge, pawns)

Post by MikeGL » Tue Apr 17, 2012 9:53 am

In my old T3200 2 core 32bit machine,

Rybka 232a 32bit considers Bb4, Be1 and Bb6 as the best move with 1.05 score for these moves.
Rybka 4 32bit consideers Bb6 as the best after 15 seconds
Komodo 3 32bit considers Bb6 as best after 7 seconds
Houdini1.5a considers Bb6 as best after 4 seconds.

using Arena interface with MultiPV set to 10

The game is nice and quite accurate according to engines,
except for some inaccuracies by black.
57. Rh7 or 57.Ra7 seems to give an easy win instead of the text move 57.Rd1.

What's strange is after the final position 66. Kd5, most engines want's to play 66. ... Bd8 followed by Bxh4 instead of your idea 66. ... Bd6 to defend the c-pawn.

p.s.
41.b3 is an amazing positional move to create Q-side passed pawns. I wonder if there are engines which will consider such a beautiful move.

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mclane
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Re: Another interesting position (endgame knowledge, pawns).

Post by mclane » Tue Apr 17, 2012 10:30 am

latest komodo:

1.00 0:00 +0.18 62.Be1 Kd7 (55) 27.4
2.00 0:00 +0.17 62.Bb4 Kd7 (136) 45.3
3.00 0:00 +0.41 62.Bb4 Kd7 63.Kh2 (176) 43.9
4.00 0:00 +0.16 62.Be1 Kd7 63.Kh2 Nxc5 64.Bxh4 Kd6 (653) 93.2
5.00 0:00 +0.35 62.Be1 Kd7 63.Kh2 Nxc5 64.Bxh4 Ne4 65.Be1 (855) 106.8
5.00 0:00 +0.35 62.Be1 Kd7 63.Kh2 Nxc5 64.Bxh4 Ne4 65.Be1 (929) 103.2
6.00 0:00 +0.24 62.Be1 Kd7 63.Bxh4 Nxc5 64.Kh2 Ne4 65.Be1 Ke6 (1.521) 138.2
6.00 0:00 +0.24 62.Be1 Kd7 63.Bxh4 Nxc5 64.Kh2 Ne4 65.Be1 Ke6 (1.724) 143.6
7.00 0:00 +0.26 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne4 65.Bg3 Ke6 66.Bf4 (2.608) 186.2
7.00 0:00 +0.26 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne4 65.Bg3 Ke6 66.Bf4 (2.964) 185.2
8.00 0:00 +0.27 62.Be1 Nxc5 63.Bxh4 Kd7 64.Bg5 Ne4 65.Be3 Ke6 66.Kh2 Kd5 (4.755) 226.4
8.00 0:00 +0.27 62.Be1 Nxc5 63.Bxh4 Kd7 64.Bg5 Ne4 65.Be3 Ke6 66.Kh2 Kd5 (5.277) 239.8
9.00 0:00 +0.43 62.Be1 (8.800) 283.8
9.00 0:00 +0.44 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kd5 67.Ke3 (10.566) 301.8
9.00 0:00 +0.44 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kd5 67.Ke3 (11.623) 305.8
10.00 0:00 +0.49 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kd6 66.Ke2 g5 67.Bf2 Kd5 (18.769) 347.5
10.00 0:00 +0.49 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kd6 66.Ke2 g5 67.Bf2 Kd5 (19.983) 344.5
11.00 0:00 +0.61 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 g5 66.Bf2 Ke6 67.Ke2 Kf5 68.Be3 g4 (44.805) 396.5
11.00 0:00 +0.61 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 g5 66.Bf2 Ke6 67.Ke2 Kf5 68.Be3 g4 (46.166) 387.9
12.00 0:00 +0.66 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 g5 66.Be1 Kd6 67.Ke2 Ke5 68.Ke3 Kd5 69.Bb4 (76.043) 413.2
12.00 0:00 +0.66 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 g5 66.Be1 Kd6 67.Ke2 Ke5 68.Ke3 Kd5 69.Bb4 (78.218) 411.6
13.00 0:00 +0.71 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 g5 66.Be1 Kd6 67.Ke2 Ke5 68.Ke3 Kd5 69.Bb4 Ng3 (129.961) 401.1
13.00 0:00 +0.71 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 g5 66.Be1 Kd6 67.Ke2 Ke5 68.Ke3 Kd5 69.Bb4 Ng3 (132.186) 398.1
14.01 0:00 +0.76 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 g5 66.Be1 Kd6 67.Ke2 Ke5 68.Kd3 Kd5 69.Bc3 Nc5+ 70.Ke3 Kc4 (239.999) 403.3
14.12 0:00 +0.76 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 g5 66.Be1 Kd6 67.Ke2 Ke5 68.Kd3 Kd5 69.Bc3 Nc5+ 70.Ke3 Kc4 (242.916) 400.8
15.01 0:01 +0.77 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 g5 68.Be1 Ke5 69.Ba5 Kd5 70.Bb4 Ke5 71.Kd3 (435.301) 428.8
15.12 0:01 +0.77 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 g5 68.Be1 Ke5 69.Ba5 Kd5 70.Bb4 Ke5 71.Kd3 (438.972) 427.8
16.01 0:01 +0.77 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 g5 68.Be1 Ke5 69.Ba5 Kd5 70.Bd8 Ke5 71.Bb6 (548.845) 435.5
16.12 0:01 +0.77 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 g5 68.Be1 Ke5 69.Ba5 Kd5 70.Bd8 Ke5 71.Bb6 (555.593) 434.3
17.01 0:01 +0.77 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 g5 68.Be1 Ke5 69.Ba5 Kd5 70.Bd8 Ke5 71.Bb6 Kd5 72.Bd4 (666.657) 429.5
17.12 0:01 +0.77 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 g5 68.Be1 Ke5 69.Ba5 Kd5 70.Bd8 Ke5 71.Bb6 Kd5 72.Bd4 (675.493) 429.1
18.01 0:02 +0.80 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 g5 68.Be1 Ke5 69.Ba5 Kd5 70.Bd8 Ke5 71.Bb6 Kd5 72.Bd4 Ng3 (1.275.297) 455.1
18.12 0:02 +0.80 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 g5 68.Be1 Ke5 69.Ba5 Kd5 70.Bd8 Ke5 71.Bb6 Kd5 72.Bd4 Ng3 (1.284.593) 454.7
19.01 0:03 +0.80 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Ke5 68.Be1 Kd5 69.Kf4 Nc5 70.Bc3 Ne6+ 71.Ke3 Nc5 72.Bf6 Ne4 73.Bd4 (1.554.018) 463.6
19.12 0:03 +0.80 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Ke5 68.Be1 Kd5 69.Kf4 Nc5 70.Bc3 Ne6+ 71.Ke3 Nc5 72.Bf6 Ne4 73.Bd4 (1.564.173) 462.3
20.01 0:05 +0.82 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Ke5 68.Bd8 Nc5 69.Bb6 Ne4 70.g4 g5 71.Bd4+ Kd5 72.Kd3 Ng3 73.Bf6 Ne4 (2.401.077) 464.9
20.12 0:05 +0.82 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Ke5 68.Bd8 Nc5 69.Bb6 Ne4 70.g4 g5 71.Bd4+ Kd5 72.Kd3 Ng3 73.Bf6 Ne4 (2.422.720) 464.1
21.01 0:07 +0.85 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Nc5 68.Bf6 Ne4 69.Be7 Ng3 70.Kf4 Ne4 71.Bd8 Nc5 72.Bf6 Ne6+ 73.Ke3 Nc5 (3.701.191) 472.1
21.12 0:07 +0.85 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Nc5 68.Bf6 Ne4 69.Be7 Ng3 70.Kf4 Ne4 71.Bd8 Nc5 72.Bf6 Ne6+ 73.Ke3 Nc5 (3.725.474) 471.9
22.01 0:09 +0.85 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Nc5 68.Bg5 Ne6 69.Bf6 Nc5 70.Kf3 Kc4 71.Kf4 Ne6+ 72.Ke3 Nc5 73.Be7 Nd3 74.g4 (4.619.836) 468.7
22.12 0:09 +0.85 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Nc5 68.Bg5 Ne6 69.Bf6 Nc5 70.Kf3 Kc4 71.Kf4 Ne6+ 72.Ke3 Nc5 73.Be7 Nd3 74.g4 (4.641.268) 468.5
23.01 0:14 +0.86 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Nc5 68.Bg5 Ke5 69.Bd8 Ne4 70.Bb6 Ng5 71.h4 Ne6 72.g4 Kd5 73.Kf3 Ke5 74.Be3 (6.583.124) 462.2
23.12 0:14 +0.86 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Nc5 68.Bg5 Ke5 69.Bd8 Ne4 70.Bb6 Ng5 71.h4 Ne6 72.g4 Kd5 73.Kf3 Ke5 74.Be3 (6.612.084) 462.3
24.01 0:21 +0.93 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Nc5 68.Bd8 Ne6 69.Bb6 Ng7 70.Kf3 Nf5 71.Bf2 Nd6 72.Kf4 Ne4 73.Be3 Nc3 74.Kg5 Ke4 (10.390.774) 473.0
24.12 0:22 +0.93 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Kc6 66.Ke2 Kd5 67.Ke3 Nc5 68.Bd8 Ne6 69.Bb6 Ng7 70.Kf3 Nf5 71.Bf2 Nd6 72.Kf4 Ne4 73.Be3 Nc3 74.Kg5 Ke4 (10.474.551) 472.6
25.01 0:32 +0.93 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Kf3 Nd2+ 68.Ke3 Nc4+ 69.Kd4 Na3 70.Kd3 Nb5 71.Bg3 Ke6 72.Kc4 Na3+ 73.Kd4 Nb5+ 74.Ke4 Nc3+ 75.Ke3 (14.899.420) 461.9
25.12 0:32 +0.93 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Kf3 Nd2+ 68.Ke3 Nc4+ 69.Kd4 Na3 70.Kd3 Nb5 71.Bg3 Ke6 72.Kc4 Na3+ 73.Kd4 Nb5+ 74.Ke4 Nc3+ 75.Ke3 (14.927.625) 461.9
26.01 0:42 +0.93 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Bd8 g5 68.Ke3 g4 69.h4 Ng3 70.Bc7 Nh5 71.Bd6 Ng7 72.Bg3 Ne6 73.Bh2 Ng7 74.Bd6 Ke6 75.Bg3 (20.194.769) 475.6
26.12 0:42 +0.93 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Bd8 g5 68.Ke3 g4 69.h4 Ng3 70.Bc7 Nh5 71.Bd6 Ng7 72.Bg3 Ne6 73.Bh2 Ng7 74.Bd6 Ke6 75.Bg3 (20.308.043) 475.7
27.01 0:57 +0.93 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Bd8 g5 68.Ke3 g4 69.h4 Ng3 70.Bc7 Nh5 71.Bd6 Ng7 72.Bh2 Nh5 73.Bc7 Ng7 74.Bg3 Nh5 75.Bb8 (27.761.359) 486.2
27.12 0:57 +0.93 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Bd8 g5 68.Ke3 g4 69.h4 Ng3 70.Bc7 Nh5 71.Bd6 Ng7 72.Bh2 Nh5 73.Bc7 Ng7 74.Bg3 Nh5 75.Bb8 (27.935.191) 485.6
28.01 1:28 +1.00 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Bd8 Nd6 68.Ke3 Nc4+ 69.Kd4 Nd6 70.Kd3 Ne4 71.Bc7 Nf6 72.Kd4 Nd7 73.Bd6 Ke6 74.Bg3 g5 75.Bc7 (44.215.914) 500.6
28.12 1:28 +1.00 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Bd8 Nd6 68.Ke3 Nc4+ 69.Kd4 Nd6 70.Kd3 Ne4 71.Bc7 Nf6 72.Kd4 Nd7 73.Bd6 Ke6 74.Bg3 g5 75.Bc7 (44.381.248) 500.5
29.01 2:29 +0.92 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Nd2+ 75.Ke3 (77.691.134) 520.2
29.12 2:34 +0.92 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Nd2+ 75.Ke3 (80.198.310) 519.5
30.01 2:50 +0.92 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Nd2+ 75.Kf4 (87.936.302) 515.6
30.12 2:52 +0.92 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Nd2+ 75.Kf4 (89.101.754) 516.0
31.01 3:20 +0.92 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Nd2+ 75.Kf5 (105.268.618) 524.5
31.12 3:22 +0.92 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Nd2+ 75.Kf5 (106.401.116) 524.6
32.01 3:55 +0.92 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Nd2+ 75.Kf4 (124.308.322) 528.4
32.12 3:57 +0.92 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Nd2+ 75.Kf4 (125.456.680) 528.2
33.01 5:02 +0.92 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Nd2+ 75.Kf4 (157.444.373) 520.3
33.12 5:11 +0.92 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Nd2+ 75.Kf4 (161.459.965) 518.6
34.01 6:56 +0.91 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 65.Be1 Kf7 66.Kf1 g4 67.h4 Nd6 68.Ke2 Nf5 69.g3 Nd4+ 70.Kd3 Nf3 71.Bf2 Kg6 72.Ke4 Kh6 73.Bd4 Kh5 74.Bf6 Kg6 75.Bd8 (214.642.665) 515.6
34.07 10:39 +1.08 62.Bb6 (323.008.701) 505.0
34.01 14:20 +1.26 62.Bb6 Kd7 63.Kg1 Nd4 64.Kf2 Nc2 65.Ba5 Kc6 66.Kf3 Kxc5 67.Ke4 Kc6 68.Bd2 Kc5 69.Bg5 Kd6 70.Bxh4 Ke6 71.Bf2 g5 72.Bb6 Kf6 73.g4 Nb4 74.Bd8+ Kg6 75.Ba5 (437.907.434) 508.6
34.12 14:22 +1.26 62.Bb6 Kd7 63.Kg1 Nd4 64.Kf2 Nc2 65.Ba5 Kc6 66.Kf3 Kxc5 67.Ke4 Kc6 68.Bd2 Kc5 69.Bg5 Kd6 70.Bxh4 Ke6 71.Bf2 g5 72.Bb6 Kf6 73.g4 Nb4 74.Bd8+ Kg6 75.Ba5 (438.469.504) 508.6
____________________________________

Engine: Stockfish 2.2.2 JA 64bit
by Tord Romstad, Marco Costalba and Joona
1.00 0:01 +1.41 62.Bb4 (38) 0.0
2.00 0:01 +1.01 62.Be1 Nxc5 63.Bxh4 (98) 0.0
3.00 0:01 +1.01 62.Be1 Nxc5 63.Bxh4 (186) 0.1
4.00 0:01 +0.84 62.Be1 Nxc5 63.Bxh4 Kd7 (371) 0.3
5.00 0:01 +1.01 62.Be1 Nxc5 63.Bxh4 Kd7 64.Bf2 (707) 0.6
6.00 0:01 +0.88 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 g5 (1.252) 1.0
7.00 0:01 +1.01 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 Kd7 65.Kf1 (2.099) 1.7
8.00 0:01 +0.96 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 Kd7 65.Kf1 g5 66.Be1 (3.168) 2.6
9.00 0:01 +0.96 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 Kd7 65.Kf1 g5 66.Be1 (5.105) 4.2
10.00 0:01 +1.25 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 Kd7 65.Kf1 Ke6 66.Ke2 g5 67.Ke3 Kd5 68.Be1 (11.222) 9.2
11.00 0:01 +1.45 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 Kd7 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Kd5 68.Ke3 Ke5 69.Bb4 (31.325) 25.2
12.00 0:01 +1.45 62.Be1 Nxc5 63.Bxh4 Ne4 64.Kg1 Kd7 65.Kf1 g5 66.Be1 Kc6 67.Ke2 Kd5 68.Ke3 Ke5 69.Bb4 (38.392) 30.6
13.00 0:01 +1.41 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Nd3 65.Kf1 Ke6 66.Ke2 Nf4+ 67.Kf3 Kf5 68.Bg3 g5 69.Bf2 (55.091) 43.0
14.00 0:01 +1.37 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf1 Kd5 66.Ke2 Ke4 67.Be7 Ne6 68.Bd6 Nf4+ 69.Kf2 g5 70.Be7 (74.528) 56.8
15.00 0:01 +1.45 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf1 Kd5 66.Ke2 Ke4 67.Be7 Ne6 68.Kf2 Nf4 69.h4 Nd3+ 70.Kg3 Nf4 71.Bg5 Nd5 72.Kf2 Nf4 73.Kg3 (110.650) 81.0
16.00 0:01 +1.45 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf1 Kd5 66.Ke2 Ke4 67.Be7 Ne6 68.Kf2 Nf4 69.h4 Nd3+ 70.Kg3 Nf4 71.Bg5 Ne2+ 72.Kg4 Nd4 73.Bf6 Nf5 74.g3 (141.137) 99.8
17.00 0:01 +1.45 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf1 Kd5 66.Ke2 Ke4 67.Be7 Ne6 68.Kf2 Nf4 69.h4 Nd3+ 70.Kg3 Nf4 71.Bg5 Nd3 72.Bd2 Ne5 73.Bc3 Nc4 (180.201) 122.3
18.00 0:01 +1.49 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf1 Kd5 66.Ke2 Ke4 67.Be7 Ne6 68.Kf2 Nf4 69.h4 Nd3+ 70.Kg3 Nf4 71.Bg5 Nd3 72.Bd2 Ne5 73.Bc3 Nc4 (244.140) 155.6
19.00 0:01 +1.45 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf1 Kd5 66.Ke2 Ke4 67.Be7 Ne6 68.Kf2 Nf4 69.h4 Ne6 70.g4 Nf4 71.Bd6 Nd5 72.Ke2 Ne3 (292.813) 178.4
20.00 0:02 +1.53++ 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne4 65.Kg1 Ke6 66.Kf1 Nc3 67.Be1 Nd5 68.Kf2 Nf4 69.Bd2 (626.382) 287.1
20.12 0:02 +1.53 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne6 65.Bf2 Ng5 66.Kg1 Kd6 67.Be3 Ne4 68.Kf1 Kd5 69.Ke2 Kc4 70.Kf3 Kd5 71.Kf4 Nd6 72.Bb6 Nc4 73.Bf2 Ne5 (730.105) 306.5
21.12 0:02 +1.53 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne6 65.Bf2 Ng5 66.Kg1 Kd6 67.Be3 Ne4 68.Kf1 Kd5 69.Ke2 Kc4 70.h4 Ng3+ 71.Kf2 Nf5 72.Bg5 Kd5 73.g4 Nd6 74.Bf4 Nc4 75.h5 (963.433) 344.8
22.01 0:03 +1.61++ 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne6 65.Bf2 Ng5 66.Kg3 Ne4+ 67.Kf3 Nxf2 68.Kxf2 Ke6 69.Kf3 Kf5 70.h4 Ke5 71.Kg4 Ke6 72.Kg5 (1.252.800) 390.6
22.12 0:03 +1.61 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne6 65.Bf2 Ng5 66.Kg3 Ne6 67.Kg4 Kd6 68.Be3 Ke5 69.Kf3 Kd5 70.h4 Ke5 71.Bb6 Kd5 72.Ke3 Ke5 73.g3 (1.356.926) 404.6
23.12 0:03 +1.61 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne6 65.Bf2 Kc6 66.Kg3 Kd5 67.Kf3 Ng5+ 68.Ke3 Ne6 69.Bh4 Ke5 70.Be1 Nc5 71.Bc3+ Kd5 72.Bf6 Ne4 73.Be7 Ke5 74.Kd3 Kd5 75.h4 (1.624.412) 433.7
24.12 0:04 +1.61 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne6 65.Bf2 Kc6 66.Kg3 Kd5 67.Kf3 Ng5+ 68.Ke3 Ne6 69.Bh4 Ke5 70.Be1 Nc5 71.Bc3+ Kd5 72.Bf6 Ne4 73.Be7 Ke5 74.Bh4 Kd5 75.Bd8 (1.854.011) 454.3
25.12 0:04 +1.61 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne6 65.Bf2 Kc6 66.Kg3 Kd5 67.Kf3 Ng5+ 68.Ke3 Ne6 69.Bh4 Ke5 70.Be1 Nc5 71.Bc3+ Kd5 72.Bf6 Ne4 73.Bd8 Nc5 74.Bf6 (2.174.470) 474.9
26.01 0:06 +1.69++ 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kh2 Ne6 65.Bf2 Kc6 66.Kg3 Kd5 67.Kf3 Ng5+ 68.Kf4 Ne4 69.Be1 g5+ 70.Ke3 Nd6 71.Bc3 Ne4 72.Bd4 (3.546.216) 524.4
26.01 0:09 +1.77++ 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf2 g5 66.Bg3 Ne4+ 67.Kf3 Nd2+ 68.Kg4 Ne4 69.Be5 Kd5 70.Kf5 (5.366.821) 564.7
26.01 0:12 +1.89++ 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf2 g5 66.Bg3 Ne4+ 67.Kf3 Nd2+ 68.Kg4 Ne4 69.Be5 Kd5 70.Kf5 (7.051.031) 587.0
26.12 0:15 +1.97 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf2 Ne4+ 66.Kf3 Kd5 67.Kf4 Kd4 68.Be1 Kd5 69.h4 Nc5 70.Ke3 Nd7 71.g3 Ke6 72.Bc3 Nb6 73.Bd4 Nc4+ 74.Kf4 Nd6 75.Kg5 (9.175.569) 605.3
27.01 0:18 +2.06++ 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf2 Ne4+ 66.Kf3 Kd5 67.Kf4 Kd4 68.Be1 Kd5 69.h4 Nc5 70.Ke3 Nd7 71.g3 Ke6 72.Bc3 Nb6 73.Ke4 Nc4 74.g4 Nd6+ 75.Ke3 (11.762.028) 623.2
27.12 0:19 +2.06 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Kc6 65.Kf2 Ne4+ 66.Kf3 Kd5 67.Kf4 Kd4 68.Be1 Kd5 69.h4 Nc5 70.Ke3 Nd7 71.Bb4 Kc4 72.Bd2 Kd5 73.Be1 Ke6 74.Kf3 Ne5+ 75.Ke4 (11.919.027) 623.4
28.12 0:24 +2.02 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Nd3 65.Kf1 Ke6 66.Ke2 Ne5 67.Ke3 Kf5 68.Bd8 Nc4+ 69.Kd4 Ne5 70.Bc7 Nd7 71.Bg3 Nf6 72.Ke3 Nd7 73.Be1 Ne5 74.Bc3 Nf7 75.Bd2 (15.329.884) 636.5
29.01 0:27 +2.10++ 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Nd3 65.Kf1 Ke6 66.Ke2 Ne5 67.Bg3 Nc4 68.Kf3 Kf5 69.Bc7 g5 70.g4+ Ke6 71.Bd8 Ne5+ 72.Ke4 Nf7 73.Bc7 Kd7 74.Bg3 Kc6 75.Bf2 (17.717.028) 642.7
29.12 0:27 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Nd3 65.Kf1 Ke6 66.Ke2 Ne5 67.Bg3 Nc4 68.Kf3 Kf5 69.Bc7 g5 70.g4+ Ke6 71.Bd8 Ne5+ 72.Ke4 Nf7 73.Bc7 Kd7 74.Bg3 Ke6 75.Be1 (18.007.010) 643.3
30.12 0:34 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Nd3 65.Kf1 Ke6 66.Ke2 Ne5 67.Bg3 Nc6 68.Ke3 Kf5 69.Bc7 g5 70.g4+ Kf6 71.Ke4 Ke6 72.Bb6 Ne5 73.Bd8 Nf7 74.Bc7 Kd7 75.Bg3 (22.374.149) 646.7
31.12 0:38 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 g5 66.Be1 Ke6 67.Ke2 Nd6 68.Kf3 Nc4 69.Ke4 Nd6+ 70.Ke3 Kf5 71.g4+ Ke6 72.Kd4 Nf7 73.Bd2 Ne5 74.Ke4 Nf7 75.Be1 (25.214.858) 654.4
32.12 0:44 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Ke3 Nd6 68.g4+ Ke6 69.Kf4 Nf7 70.Bg3 Kf6 71.Be1 g5+ 72.Ke4 Ke6 73.Bb4 Ne5 74.Bd2 Nf7 75.Be1 (29.502.718) 660.8
33.12 0:50 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Ke3 g5 68.Be1 Nd6 69.Bb4 Nf7 70.Bc3 Nd8 71.g4+ Ke6 72.Ke4 Nf7 73.Be1 Nd6+ 74.Kd4 Nf7 75.Bd2 (33.189.021) 660.9
34.01 0:57 +2.18++ 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Ke3 g5 68.Be1 Nd6 69.Bg3 Nb5 70.Kd3 Ke6 71.Bf2 Ke5 72.Be3 (38.145.018) 667.4
34.12 0:58 +2.18 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Ke3 g5 68.Be1 Nd6 69.Bg3 Ne4 70.Bc7 Nf6 71.Ba5 Ne4 72.Bb4 Nf6 73.Be1 Ne4 74.Ba5 Ke5 75.Bd8 (39.078.114) 668.7
35.12 1:19 +2.10-- 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.g4+ Ke6 70.Bb4 Nc4 71.Ke4 Kf6 72.Bc3+ Ke6 73.Bb4 (53.695.926) 675.3
35.12 1:23 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.g4+ Ke6 70.Bb4 Nc4 71.Ke4 Kf6 72.Bc3+ Ke6 73.Bb4 (56.579.081) 673.6
36.12 1:30 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.g4+ Ke6 70.Bb4 Nc4 71.Ke4 Kf6 72.Bc3+ Ke6 73.Be1 Nd6+ 74.Kd4 Nf7 75.Bd2 (61.826.494) 679.7
37.12 1:38 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.g4+ Ke6 70.Bb4 Nc4 71.Ke4 Kf6 72.Bc3+ Ke6 73.Be1 Nd6+ 74.Kd4 Nf7 75.Bd2 (67.707.119) 684.7
38.12 1:54 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.g4+ Ke6 70.Bb4 Nc4 71.Ke4 Kf6 72.Bc3+ Ke6 73.Be1 Nd6+ 74.Kd4 Nf7 75.Bd2 (79.772.554) 694.6
39.12 2:11 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.g4+ Ke6 70.Bb4 Nc4 71.Ke4 Kf6 72.Bc3+ Ke6 73.Be1 Nd6+ 74.Kd4 Nf7 75.Bd2 (92.442.427) 704.6
40.12 2:38 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.Bg3 Nb5 70.Ke3 Na7 71.Bd6 Nc6 72.Kd3 Ke6 73.Bc5 Ne5+ 74.Ke4 Nf7 75.Bb4 (113.394.638) 716.8
41.12 3:01 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.Bg3 Ne4 70.Bc7 Nf6 71.Kf2 Ne8 72.Bd8 Nd6 73.Kf3 Nf7 74.Bc7 Nh8 75.g4+ (130.969.281) 720.4
42.12 3:17 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.Bg3 Ne4 70.Bc7 Nf6 71.Kf2 Ne8 72.Bd8 Nd6 73.Kf3 Nf7 74.Bc7 Ne5+ 75.Bxe5 (142.880.334) 724.1
43.12 4:13 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.Bg3 Ne4 70.Bc7 Nf6 71.Ke2 Ne4 72.Kd3 Nc5+ 73.Ke3 Ne6 74.Bd6 Kg6 75.Ke4 (186.142.418) 733.9
44.12 4:37 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.Bg3 Ne4 70.Bc7 Nf6 71.Ke2 Ne4 72.Kd3 Nc5+ 73.Ke3 Ne6 74.Bd6 Nd8 75.Bh2 (204.620.268) 737.6
45.12 5:43 +2.14 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 g5 67.Be1 Nd6 68.Kf3 Kf5 69.Bg3 Ne4 70.Bc7 Nf6 71.Ke2 Ne4 (255.718.035) 743.4
46.12 7:40 +2.10 62.Be1 Nxc5 63.Bxh4 Kd7 64.Kg1 Ne4 65.Kf1 Ke6 66.Ke2 Kf5 67.Bd8 Nd6 68.Ke3 Nc4+ 69.Kd4 Nd6 70.Be7 Nc8 71.Bh4 g5 72.Bg3 Ne7 73.Bd6 Ng6 74.g3 Ke6 75.Bc7 (345.920.669) 751.5
47.10 10:48 +2.18++ 62.Bb6 Kd7 63.Kg1 Kc6 64.Kf2 Nd4 65.Ke3 Ne6 66.Kf3 Kd7 67.Ke4 Kc6 68.Ke5 Ng5 69.Ba5 Nf7+ 70.Kf6 (486.903.580) 751.1
47.01 12:05 +2.26++ 62.Bb6 Kd7 63.Kg1 Kc6 64.Kf2 Nd4 65.Ke3 Kd5 66.Kf4 Nf5 67.Kg5 Kc6 68.Ba5 Ne3 69.Be1 Nxg2 70.Bf2 Kd5 71.Kg4 (542.477.501) 748.0
47.01 13:04 +2.38++ 62.Bb6 Kd7 63.Kg1 Kc6 64.Kf2 Nd4 65.Ke3 Nf5+ 66.Kf4 Kb7 67.Bd8 Kc6 68.Ke5 Kxc5 69.Bg5 Kc4 70.Kf6 Kd5 71.Bf4 Ke4 72.Bg5 Nd4 73.Bxh4 Kf4 74.Bg5+ Kg3 75.Kxg6 (586.178.119) 747.2
47.01 14:40 +2.56++ 62.Bb6 Kd7 63.Kg1 Kc6 64.Kf2 Nd4 65.Ke3 Nf5+ 66.Kf4 Kb5 67.Ba7 Kc6 68.Bb8 Kxc5 69.Kg5 Ne7 70.Bf4 Kd4 71.Kh6 Nd5 72.Bg5 Ne3 73.Bxe3+ Kxe3 74.Kxg6 Kf4 75.Kf6 (653.412.648) 742.3
47.01 16:23 +2.83++ 62.Bb6 Kd7 63.Kg1 Kc6 64.Kf2 Nd4 65.Ke3 Nc2+ 66.Kf4 Ne1 67.Ba5 g5+ 68.Kxg5 Nxg2 69.Bb4 Kb5 70.Ba3 Kc6 71.Kh5 Kd7 72.Kg4 (725.596.870) 737.8
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BubbaTough
Posts: 1154
Joined: Fri Jun 23, 2006 3:18 am

Re: Another interesting position (endgame knowledge, pawns).

Post by BubbaTough » Tue Apr 17, 2012 1:56 pm

Hannibal1.1 picks Bb6 almost immediately. Not sure if the new version does or not since we redid some of the endgame from scratch and some of the drawish factors relevant to this position may not be back in there yet.

-Sam

Uri Blass
Posts: 8796
Joined: Wed Mar 08, 2006 11:37 pm
Location: Tel-Aviv Israel

Re: another interesting position (endgame knowledge, pawns)

Post by Uri Blass » Tue Apr 17, 2012 3:27 pm

mclane wrote:[D]4k3/8/6p1/B1P5/7p/1n5P/6P1/7K w - -

position came after

[Event "*"]
[Site "*"]
[Date "2011.01.27"]
[Round "-"]
[White "*"]
[Black "*"]
[WhiteElo "*"]
[BlackElo "*"]
[Result "*"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2
Nf6 7. O-O Bc5 8. Kh1 b5 9. f4 Bb7 10. Bf3 O-O 11. e5 Bxf3
12. Nxf3 Ng4 13. Ne4 Be7 14. Nfg5 f5 15. exf6 Nxf6 16. Qd3
g6 17. Qh3 h5 18. Nxf6+ Bxf6 19. Qd3 Kg7 20. Ne4 Nc6 21. c3
Be7 22. Be3 d5 23. Nd2 Rf5 24. Nf3 Bf6 25. a4 bxa4 26. Rxa4
a5 27. h3 h4 28. Bf2 Rh8 29. Re1 Kf7 30. Qd2 Qb8 31. Qe2
Qd6 32. Nh2 Bg7 33. Ng4 Qd7 34. Qd1 Rfh5 35. Rae4 Re8
36. R4e3 Rf5 37. Qa4 Rh5 38. R3e2 Qc7 39. Qb5 Qd7 40. Qd3
Qd6 41. b3 Qd7 42. c4 Re7 43. Rd2 Qd6 44. Rdd1 Rc7 45. Qf3
Kg8 46. Qe4 Ne7 47. c5 Qd7 48. Qxe6+ Qxe6 49. Rxe6 Kf7
50. Rd6 d4 51. Ne5+ Bxe5 52. fxe5 Rxe5 53. Bxd4 Re6 54. Bf2
Nf5 55. Rd7+ Rxd7 56. Rxd7+ Ke8 57. Rd1 Re2 58. Re1 Nd4
59. Rxe2+ Nxe2 60. Be1 Nd4 61. Bxa5 Nxb3 62. Bb6 Nd4
63. Kg1 Kd7 64. Kf2 Ke6 65. Ke3 Ke5 66. Bc7+ Kd5 *

In move 62 program should understand that it has to defend c pawn and NOT play Be1 and exchange the good c pawns for h4 pawn.

when i remember it right (its a correspondance/mail-chess game my friend analysed long time ago)
houdini, strelka, critter, firebird and all the other rybka clones do not find it. shredder is not finding it.

stockfish 2.2.2 finds it. i think crafty versions also find it.

Hiarcs13.3 on my ipad2 is finding Bb6 in an instant.

IMO human chess players would all see very early that white has to rescue/defend the c5 passed-pawn.

its very strange that some chess programs have no clue about the position, while others see it.
Houdini1.5 consider Bb6 and Be1 as equal.

Here is some analysis with 2 options at depth 28,29 with 2 options:


New game
[D]4k3/8/6p1/B1P5/7p/1n5P/6P1/7K w - - 0 1

Analysis by Houdini 1.5 w32:

1. ² (0.65): 1.Ba5-e1 Nb3xc5 2.Be1xh4 Ke8-f7 3.Kh1-g1 Nc5-e4 4.Kg1-f1 Kf7-e6 5.Kf1-e2 Ke6-f5 6.Ke2-e3 g6-g5 7.Bh4-f2 Ne4-f6 8.Bf2-e1 g5-g4 9.h3-h4 Nf6-d5+ 10.Ke3-f2 Nd5-f6 11.g2-g3 Nf6-e4+ 12.Kf2-e3 Ne4-f6 13.Ke3-d3 Kf5-e6 14.Be1-f2 Ke6-f5 15.Kd3-e3 Nf6-e4 16.h4-h5 Ne4xf2
2. ² (0.65): 1.Ba5-b6 Ke8-d7 2.Kh1-g1 Nb3-d4 3.Kg1-f2 Nd4-f5 4.Kf2-f3 Kd7-c6 5.Kf3-f4 Kc6-b5 6.Bb6-a7 Kb5-c6 7.Ba7-b8 Kc6xc5 8.Bb8-a7+ Kc5-d5 9.Ba7-f2 Nf5-g7 10.Bf2xh4 Ng7-e6+ 11.Kf4-g4 Kd5-e4 12.Bh4-g3 Ke4-d5 13.Bg3-f2 Kd5-e4 14.g2-g3 Ne6-g7 15.h3-h4 Ng7-e6 16.Bf2-b6 Ne6-f8

(, 17.04.2012)

depth 29:

New game
4k3/8/6p1/B1P5/7p/1n5P/6P1/7K w - - 0 1

Analysis by Houdini 1.5 w32:

1. ² (0.66): 1.Ba5-e1 Nb3xc5 2.Be1xh4 Ke8-f7 3.Kh1-g1 Nc5-e4 4.Kg1-f1 Kf7-e6 5.Kf1-e2 Ke6-f5 6.Bh4-d8 Ne4-d6 7.Ke2-f3 Nd6-b5 8.Kf3-e3 Nb5-c3 9.g2-g4+ Kf5-e5 10.h3-h4 Nc3-d5+ 11.Ke3-f3 Nd5-c3 12.Bd8-c7+ Ke5-e6 13.Bc7-b6 Ke6-e5 14.Bb6-c5 Nc3-d5 15.Bc5-g1 Nd5-c3 16.Bg1-e3 Nc3-d5
2. ² (0.66): 1.Ba5-b6 Ke8-d7 2.Kh1-g1 Nb3-d4 3.Kg1-f2 Kd7-e6 4.Bb6-d8 Ke6-d5 5.Bd8xh4 Kd5xc5 6.Bh4-g3 Kc5-d5 7.Kf2-e3 Nd4-e6 8.Bg3-f2 Kd5-e5 9.Ke3-f3 Ne6-g5+ 10.Kf3-g4 Ng5-e6 11.Bf2-b6 Ke5-e4 12.g2-g3 Ke4-e5 13.h3-h4 Ke5-d5 14.Bb6-g1 Kd5-e4 15.Bg1-f2 Ke4-e5 16.Kg4-f3 Ke5-d5

(, 17.04.2012)

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