Author: Kurt Utzinger
Date: 11:28:43 01/15/04
Go up one level in this thread
On January 15, 2004 at 13:39:57, Günther Simon wrote:
>On January 15, 2004 at 13:33:21, Drexel,Michael wrote:
>
>>On January 15, 2004 at 12:24:35, Günther Simon wrote:
>>
>>>On January 15, 2004 at 12:18:28, Drexel,Michael wrote:
>>>
>>>>On January 15, 2004 at 09:05:19, Günther Simon wrote:
>>>>
>>>>>[D]8/p7/1p5p/5k2/8/b1p3P1/3pK1PP/3B4 w - - 0 47
>>>>>
>>>>>This game was played in Class B of my RWBC tournament circuit.
>>>>>(PIV 2.67Ghz, around 128MB hash each program, 4men tablebases
>>>>>+ two sets of 5men, 15min/40moves, ponder off)
>>>>>
>>>>>ExChess had a completely won game, but decided one move before
>>>>>to exchange R vs. N+P on f5. It appears to me that this position
>>>>>is by all means a draw, but no program will find it.
>>>>
>>>>This can't be true. Black has 4 connected passers.
>>>>I think black wins with 47...Ke5.
>>>
>>>You should elaborate a bit more here of course, as a good player I think you
>>>know, how one bishop can stop up to seven pawns building 'stairs'.
>>>Same motive applies here later and dont forget Black King must stop
>>>Whites later built passer too! ( the passer is inevitable...)
>>>Please have a deeper look at it again after 48.Kd3 etc...
>>>
>>>Günther
>>
>>That's an easy win. White King and bishop can't stop the black pawns and prevent
>>blacks King from advancing simultaneously.
>>The white passer is not a problem. It will be stopped with Bf8.
>>Basically you just move up those pawns to the Qeening square.
>>b5,a5,a4 etc.
>>
>>Michael
>
>I really dont know what you are talkin' about here, because the Black
>bishop cant go away for a long time, as c3 falls instantly?
>
>Günther
>
>P.S.
>Back to the real position, 47.Bc2+, Ke5 48.Kd3 your move...
Hi Günther
In my opinion it is indeed a win for Black. Please
try to refute my variations included in the PGN-file
below.
Kurt
[Event "Blitz:10'+10"]
[Site "MyTown"]
[Date "2004.01.15"]
[Round "?"]
[White "Ant 606"]
[Black "ExChess 403a"]
[Result "*"]
[ECO "E12"]
[Annotator "Utzinger,K"]
[PlyCount "106"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. a3 g6 6. Bg5 Bg7 7. e3 h6 8. Bh4 d6
9. Bd3 g5 10. Bg3 Nh5 11. O-O O-O 12. Be4 c6 13. Bc2 Nxg3 14. fxg3 f5 15. Qd3
g4 16. Nh4 Nd7 17. Kh1 Ba6 18. Ng6 Rf6 19. Nh4 d5 20. b3 Rf7 21. Ng6 Qg5 22.
Nf4 Re8 23. Na2 c5 24. Rae1 dxc4 25. bxc4 e5 26. Nd5 exd4 27. Rxf5 Rxf5 28.
Qxf5 Qxf5 29. Bxf5 Nf6 30. Nxf6+ Bxf6 31. e4 Bxc4 32. Nc1 d3 33. Rd1 Rd8 34.
Bxg4 d2 35. Kg1 Bd4+ 36. Kh1 Bb2 37. Ne2 Bb3 38. Nf4 c4 39. Nd5 Bxd1 40. Bxd1
Rf8 41. Ne7+ Kh7 42. Nf5 Bxa3 43. Kg1 c3 44. Kf1 Kg6 45. Ke2 Rxf5 46. exf5+
Kxf5 47. Bc2+ Ke5 48. Kd3 Bb2 49. Kc4 (49. g4 Kf4 50. Bd1 b5 51. g3+ Ke5 52. h4
a5 53. Kc2 a4 54. Kb1 Ke4 55. g5 hxg5 56. h5 (56. hxg5 Kf5 57. Ka2 Kxg5 58. Kb1
Kf5 59. g4+ Kg5 60. Ka2 Kf4 61. Kb1) 56... Kd3 57. h6 a3 58. h7 a2+ 59. Kxa2 c2
{and Black wins}) (49. Ke2 b5 50. g4 a5 51. Kd3 (51. h4 a4 52. Kd1 Kf4 53. g5
hxg5 54. hxg5 Kxg5 {and Black wins}) 51... a4 52. Ke2 a3 {and Black wins})
49... a6 50. Kd3 b5 51. Ke3 a5 52. Kd3 a4 53. g4 a3 {and Black wins} *
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.