Author: Uri Blass
Date: 16:48:10 09/05/04
Go up one level in this thread
On September 05, 2004 at 19:42:25, Uri Blass wrote:
>On September 05, 2004 at 19:32:50, Günther Simon wrote:
>
>>On September 05, 2004 at 19:27:49, Uri Blass wrote:
>>
>>>On September 05, 2004 at 19:17:24, Günther Simon wrote:
>>>
>>>>On September 05, 2004 at 19:04:48, Uri Blass wrote:
>>>>
>>>>>On September 05, 2004 at 18:55:53, Günther Simon wrote:
>>>>>
>>>>>>On September 04, 2004 at 11:46:48, Ed Schröder wrote:
>>>>>>
>>>>>>>Does someone possess a good test set for testing Perpetual Checks ?
>>>>>>>
>>>>>>>Thanks.
>>>>>>>
>>>>>>>Ed
>>>>>>
>>>>>>
>>>>>>Well may be this one is too difficult for all current programs ;)
>>>>>>For the record, this game really happened just one hour ago
>>>>>>in a RWBC test tourney with live broadcast.
>>>>>>Humans immediately see the draw I guess...
>>>>>>The prog with Black resigned a few moves after it saced the first rook
>>>>>>and started to check. May be with resign off it would have played
>>>>>>alright until 50 moves rule? (Resign was -8)
>>>>>>
>>>>>>[D] 7k/R5R1/8/3r3P/3r3K/5P2/6P1/8 w - - 0 59
>>>>>
>>>>>No draw
>>>>>Movei finds the line
>>>>>
>>>>>g4 Rxg4+ Rxg4 Rxh5+ Kg3 Rh3+ Kf4 Rxf3+ Ke4 Re3+ Kd4 Rd3+ Kc4 Rc3+ Kb5 Rc5+ Ka4
>>>>>
>>>>>Uri
>>>>
>>>>Movei is wrong.
>>>>
>>>>Günther
>>>
>>>No
>>>
>>>g4 Rxg4+ is the only check
>>>
>>>Rxh5+ Kxh5 Rd5+(only check) Rg5 Rxg5+ Kxg5 no stalemate
>>>
>>>later it is easy for me to see that black moves are the only checks and in the
>>>end after Ka4 white can take with the rook to avoid stalemate.
>>>
>>>Uri
>>
>>You are right I missed you had Rxg4 instead of Kxg4 your PV, sorry.
>>
>>Then we have to cancel the double sac and return to a position
>>which really happened later:
>>
>>
>>[D] 7k/R5R1/8/3r3P/6K1/5P2/8/8 b - - 0 60
>
>Movei is very fast in finding a small negative score for black.
>It is not sure that it is perpetual so it gives white the advantage but the
>advantage is very small.
>
>Here is movei's analysis:
>
>[Event "Edited position"]
>[Site "URI-PC"]
>[Date "2004.09.06"]
>[Round "-"]
>[White "-"]
>[Black "-"]
>[Result "*"]
>[FEN "7k/R5R1/8/3r3P/3r3K/5P2/6P1/8 w - - 0 1"]
>[SetUp "1"]
>
>{--------------
>. . . . . . . k
>R . . . . . R .
>. . . . . . . .
>. . . r . . . P
>. . . r . . . K
>. . . . . P . .
>. . . . . . P .
>. . . . . . . .
>white to play
>--------------}
>1. g4 Rxg4+ 2. Kxg4 Rg5+ 3. Kf4 Rf5+ 4. Ke4 Re5+ 5. Kd4 Rd5+ 6. Ke3 Re5+ 7.
>Kf2 Re2+ 8. Kg3 Rg2+ 9. Kf4 Rg4+ 10. Ke5 Re4+ 11. Kf6 Re6+ 12. Kf7 Rf6+ 13.
>Ke8 Rf8+ 14. Ke7 Re8+ 15. Kf7 Rf8+ 16. Kg6 Rf6+ 17. Kg5
>*
>
>
>
>Uri
some analysis on A1000 by movei
the score going down after -0.32 inspite of seeing more checks and I think that
it should be improved.
1 -342 1 50 d5g5 g4f4 g5g7
2 -372 1 74 d5g5
2 -342 1 109 d5g5 g4f4 g5g7
2 -342 1 185 d5g5 g4f4 g5g7
3 -314 1 389 d5g5 g4f4 g5g7 a7a5
3 -314 1 619 d5g5 g4f4 g5g7 a7a5
4 -295 1 1200 d5g5 g4f4 g5g7 a7a6 h8h7
4 -295 2 1783 d5g5 g4f4 g5g7 a7a6 h8h7
5 -296 3 3780 d5g5 g4f4 g5g7 a7a8 h8h7 f4f5 h7h6 a8h8 g7h7 h8h7 h6h7
5 -296 3 5241 d5g5 g4f4 g5g7 a7a8 h8h7 f4f5 h7h6 a8h8 g7h7 h8h7 h6h7
6 -304 8 14821 d5g5 g4f4 g5g4 f4f5 g4g5 f5e4 g5g7 a7a6 h8h7
6 -304 13 25911 d5g5 g4f4 g5g4 f4f5 g4g5 f5e4 g5g7 a7a6 h8h7
7 -274 21 46325 d5g5
7 -204 29 66010 d5g5
7 -196 57 134512 d5g5 g4f4 g5f5 f4e3 f5e5 e3f2 e5e2 f2g3 e2g2 g3f4 g2g4 f4f5 g4
g5 f5e4 g5e5 e4f4
7 -196 64 149756 d5g5 g4f4 g5f5 f4e3 f5e5 e3f2 e5e2 f2g3 e2g2 g3f4 g2g4 f4f5 g4
g5 f5e4 g5e5 e4f4
8 -166 102 264254 d5g5
8 -96 165 430646 d5g5
8 -32 272 711314 d5g5 g4f4 g5f5 f4e3 f5e5 e3f2 e5e2 f2g3 e2g2 g3f4 g2g4 f4f5 g4
f4 f5e6 f4f6 e6e5 f6e6 e5f5 e6e5 f5f6
8 -32 282 731791 d5g5 g4f4 g5f5 f4e3 f5e5 e3f2 e5e2 f2g3 e2g2 g3f4 g2g4 f4f5 g4
f4 f5e6 f4f6 e6e5 f6e6 e5f5 e6e5 f5f6
9 -55 869 2279435 d5g5 g4f4 g5f5 f4e4 f5e5 e4d4 e5d5 d4e3 d5e5 e3f2 e5e2 f2g3 e
2g2 g3f4 g2g4 f4e5 g4e4 e5f5 e4e5 f5g6 e5e6 g6f5
9 -55 983 2570169 d5g5 g4f4 g5f5 f4e4 f5e5 e4d4 e5d5 d4e3 d5e5 e3f2 e5e2 f2g3 e
2g2 g3f4 g2g4 f4e5 g4e4 e5f5 e4e5 f5g6 e5e6 g6f5
10 -60 2402 6093360 d5g5 g4f4 g5f5 f4e4 f5e5 e4d4 e5d5 d4c4 d5c5 c4d3 c5d5 d3e2
d5d2 e2e3 d2e2 e3f4 e2e4 f4g3 e4g4 g3h2 g4h4 h2g1 h4g4 g1f2
10 -60 2781 6983486 d5g5 g4f4 g5f5 f4e4 f5e5 e4d4 e5d5 d4c4 d5c5 c4d3 c5d5 d3e2
d5d2 e2e3 d2e2 e3f4 e2e4 f4g3 e4g4 g3h2 g4h4 h2g1 h4g4 g1f2
11 -70 5964 15297559 d5g5 g4f4 g5f5 f4e4 f5e5 e4d4 e5d5 d4e3 d5e5 e3f2 e5e2 f2g
3 e2g2 g3f4 g2g4 f4e5 g4g5 e5d6 g5g6 d6c7 g6c6 c7d7 c6d6 d7e8 d6d8 e8e7
11 -70 7471 19083447 d5g5 g4f4 g5f5 f4e4 f5e5 e4d4 e5d5 d4e3 d5e5 e3f2 e5e2 f2g
3 e2g2 g3f4 g2g4 f4e5 g4g5 e5d6 g5g6 d6c7 g6c6 c7d7 c6d6 d7e8 d6d8 e8e7
12 -72 19636 51756749 d5g5 g4f4 g5f5 f4e4 f5e5 e4d4 e5d5 d4e3 d5e5 e3f2 e5e2 f2
g3 e2g2 g3f4 g2g4 f4e5 g4e4 e5f6 e4e6 f6f7 e6f6 f7e8 f6f8 e8e7 f8e8 e7f7 e8f8 f7
g6 f8f6 g6g5
12 -72 27011 70630596 d5g5 g4f4 g5f5 f4e4 f5e5 e4d4 e5d5 d4e3 d5e5 e3f2 e5e2 f2
g3 e2g2 g3f4 g2g4 f4e5 g4e4 e5f6 e4e6 f6f7 e6f6 f7e8 f6f8 e8e7 f8e8 e7f7 e8f8 f7
g6 f8f6 g6g5
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