Author: Drexel,Michael
Date: 11:48:36 01/16/04
Go up one level in this thread
On January 16, 2004 at 09:18:09, Uri Blass wrote:
>[D]2r5/8/2k1ppb1/7p/1RpP1PpP/1p4P1/1B1n1P2/2R3K1 w - - 0 43
>
>In this position I played Rbxc4+ and the game ended in a draw.
>How much time does your program need to see 0.00 score?
>
>All the programs that I tried cannot see draw score even after Rbxc4+ and
>evaluate the position as better for black.
>
>Here is an easier problem some plies later
>Again all programs fail that I tried fail.
>
>[D]2k5/8/4ppb1/7p/3P1PpP/1p4P1/1B3P2/6K1 w - - 0 46
>
>How much time to see a draw score?
>
>Uri
I don't think this is a particular good example.
It's a draw but Black has an edge.
Shredder 8: (-0.58) at depth 22
Bishop endings are the most difficult endings for computers.
Yesterday I removed the a pawn pawn from a recently dicussed position:
[D] 8/8/1p5p/5k2/8/2p3P1/1b1pK1PP/3B4 w - - 0 3
and played it out against Fritz 8, just for fun:
[Event "Blitz:10'"]
[Site ""]
[Date "2004.01.15"]
[Round "?"]
[White "Drexel"]
[Black "Fritz 8"]
[Result "1/2-1/2"]
[Annotator ""]
[SetUp "1"]
[FEN "8/8/1p5p/5k2/8/2p3P1/1b1pK1PP/3B4 w - - 0 3"]
[PlyCount "67"]
[TimeControl "600"]
3. Bc2+ {0} Kg5 {6} 4. Kd3 {23} b5 {0} 5. Bd1 {6} Kf5 {6} 6. Bb3 {6} Ke5 {7} 7.
Bd1 {7} Kd6 {9} 8. g4 {18} Kd5 {0} 9. h4 {9} Ke5 {0} 10. g5 {8} hxg5 {8} 11. h5
{4} Kf6 {10} 12. g4 {4} Kg7 {13} 13. Bb3 {4} Kh8 {13} 14. Bd1 {2} Kh7 {15} 15.
Bb3 {26} Kg7 {20} 16. Bd1 {4} Kh6 {9} 17. Bb3 {3} Kh7 {16} 18. Bd1 {3} Kh8 {8}
19. Bb3 {5} Ba1 {15} 20. Bc2 {5} Kg7 {10} 21. Bb3 {1} Kf6 {9} 22. Ke4 {19} Bb2
{12} 23. Bc2 {3} Ba3 {9} 24. Bb3 {1} Be7 {11} 25. Kd5 {19} Kg7 {11} 26. Ke6 {2}
Bf8 {11} 27. Bc2 {3} Bc5 {8} 28. Bb3 {4} Kh6 {12} 29. Kf7 {3} b4 {8} 30. Bd1 {5
} Bf2 {7} 31. Bb3 {2} Ba7 {9} 32. Bd1 {2} Bd4 {9} 33. Bb3 {2} Be5 {7} 34. Bd1 {
2} Bc7 {6} 35. Bb3 {2} Bb6 {7} 36. Bd1 {22} 1/2-1/2
[D] 8/5K2/1b5k/6pP/1p4P1/2p5/3p4/3B4 b - - 0 36
Is any engine able to see a draw score?
8/5K2/1b5k/6pP/1p4P1/2p5/3p4/3B4 b - - 0 1
Analysis by Fritz 8:
36...Be3--
-+ (-5.22) Depth: 7/9 00:00:00 7kN
36...Be3 37.Kf6 Bf4
-+ (-5.22) Depth: 7/14 00:00:00 8kN
36...Be3--
-+ (-4.93) Depth: 8/14 00:00:00 13kN
36...Be3 37.Kf6 Bf4 38.Kf5
-+ (-4.93) Depth: 8/14 00:00:00 13kN
36...Bc5!
-+ (-4.97) Depth: 8/17 00:00:00 19kN
36...Bc5 37.Kf6 Bf8 38.Kf5
-+ (-5.00) Depth: 8/17 00:00:00 21kN
36...Bc5--
-+ (-4.72) Depth: 9/16 00:00:00 33kN
36...Bc5 37.Kf6 Bf8
-+ (-4.72) Depth: 9/16 00:00:00 42kN
36...Bd8!
-+ (-4.75) Depth: 9/16 00:00:00 45kN
36...Bd8!
-+ (-4.90) Depth: 9/16 00:00:00 46kN
36...Bd8--
-+ (-4.62) Depth: 10/20 00:00:00 71kN
36...Bd8 37.Ke6 Ba5 38.Kf5
-+ (-4.62) Depth: 10/20 00:00:00 84kN
36...Bg1!
-+ (-4.65) Depth: 10/20 00:00:00 86kN
36...Bg1!
-+ (-4.81) Depth: 10/20 00:00:00 86kN
36...Bg1 37.Kf6
-+ (-4.87) Depth: 10/20 00:00:00 91kN
36...Bg1 37.Kf6 Bh2 38.Kf5 Bc7 39.Bc2 b3
-+ (-4.62) Depth: 11/20 00:00:00 141kN
36...Bg1 37.Kf6 Bh2 38.Kf5 Bc7 39.Bc2 b3
-+ (-4.62) Depth: 12/17 00:00:00 193kN
36...Bg1 37.Kf6 Bh2 38.Kf5 Bc7 39.Bc2 b3
-+ (-4.62) Depth: 13/20 00:00:00 280kN
36...Bg1 37.Ke6 Bf2 38.Bc2 b3 39.Bxb3 c2 40.Bxc2 Bg3 41.Bb3 Bf4 42.Kf5
-+ (-4.62) Depth: 14/21 00:00:01 629kN
36...Bg1--
-+ (-4.34) Depth: 15/22 00:00:01 904kN
36...Bg1 37.Ke6 Bf2 38.Bc2
-+ (-4.34) Depth: 15/22 00:00:01 947kN
36...Bg1 37.Ke6 Bf2 38.Bc2 b3 39.Bxb3 c2 40.Bxc2 Bd4
-+ (-4.34) Depth: 16/24 00:00:03 2038kN
36...Bg1--
-+ (-4.06) Depth: 17/24 00:00:04 3322kN
36...Bg1 37.Ke6 Bf2 38.Bc2
-+ (-4.06) Depth: 17/24 00:00:05 3452kN
36...Bg1--
-+ (-3.78) Depth: 18/32 00:00:09 7040kN
36...Bg1 37.Ke6 Bf2 38.Bc2
-+ (-3.78) Depth: 18/32 00:00:09 7222kN
36...Bg1--
-+ (-3.50) Depth: 19/30 00:00:16 13384kN
36...Bg1 37.Ke6 Bd4 38.Kd5 Bg7 39.Bc2 Bf8 40.Kc4 Kg7 41.Kd3 Kh8 42.Ke2 Kg7
43.Kd1 Kh6
-+ (-3.37) Depth: 19/43 00:00:41 34298kN
36...Bg1 37.Ke6 Bd4 38.Kd5 Bg7 39.Bc2 Bf8 40.Kc4 Kg7 41.Kd3 Bd6 42.Ke2 Bc5
43.Kd1 Kh6 44.Bb3 Bd4 45.Bc2
-+ (-3.37) Depth: 20/33 00:00:54 45132kN
36...Bg1 37.Ke6 Bd4 38.Kd5 Bg7 39.Bc2 Bf8 40.Kc4 Kg7 41.Kd3 Bd6 42.Ke2 Bc5
43.Kd1 Kh6 44.Bb3 Bd4 45.Bc2 Be5
-+ (-3.37) Depth: 21/35 00:01:04 54020kN
36...Bg1 37.Ke6 Bd4 38.Kd5 Bg7 39.Bc2 Bf8 40.Kc4 Kg7 41.Kd3 Bd6 42.Ke2 Bc5
43.Kd1 Kh6 44.Bb3 Bd4 45.Bc2 Be5 46.Bb3
-+ (-3.37) Depth: 22/39 00:01:27 74139kN
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