Author: Drexel,Michael
Date: 11:08:58 09/20/03
Go up one level in this thread
On September 20, 2003 at 07:44:56, Vincent Diepeveen wrote:
>On September 20, 2003 at 02:44:05, Drexel,Michael wrote:
>
>see posting from Dieter.
As Uri said, Yace can not refute my assumptions.
Even if Yace would solve the position, it does not mean that Shredder (No
solution at depth 29) or Diep on 500 cpu's can solve it.
The position is very tough and still not solved by Computers AFAIK.
I have analysed it some time with Shredder (see below).
I think Shredder can not solve it on a modern PC (single processor or Dual).
Shredder even needs a few seconds to find the win after the move 100.Rc7.
Michael
[Event "World Championship 35th-KK5"]
[Site "Lyon/New York"]
[Date "1990.12.01"]
[Round "16"]
[White "Kasparov, Garry"]
[Black "Karpov, Anatoly"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2800"]
[BlackElo "2730"]
[Annotator "Drexel,M"]
[SetUp "1"]
[FEN "5k2/4R3/2K3p1/4BbPn/8/8/8/8 w - - 0 89"]
[PlyCount "27"]
[EventDate "1990.10.??"]
[Source "?"]
89. Ra7 (89. Kd6 Bg4 90. Ra7 $18) 89... Bg4 90. Kd6 Bh3 91. Ra3 $1 {
The best square for the rook is e3.} Bg4 92. Re3 $1 $18 {
The white rook controls the important g3 square.} Bf5 {Now white brings his
King to d8 in order to clear the a3-f8 Diagonal for his bishop.} (92... Ke8 93.
Bg7+ Kf7 (93... Kd8 94. Bf6+ $18) 94. Re7+ Kg8 95. Bh6 Ng3 (95... Kh8 96. Re8+
Kh7 97. Ke7 Ng3 (97... Nf4 98. Kf7 $18) 98. Kf8 Nf5 99. Bg7 $18) (95... Bf3 96.
Re8+ Kh7 97. Ke7 Ng3 98. Kf8 Nf5 99. Bg7 $18) 96. Rg7+ Kh8 97. Rxg6 Bh5 (97...
Bf5 98. Rg7 $18) 98. Re6 $18) 93. Kc7 Kf7 (93... Ke7 94. Bd6+ Kf7 95. Re7+ Kg8
(95... Kf8 96. Kd8 Kg8 97. Ra7 $18) 96. Kd8 Bg4 (96... Ng7 97. Be5 Ne6+ 98. Ke8
$18) 97. Be5 Kf8 98. Ra7 $18) 94. Kd8 Bg4 (94... Ke6 95. Bh2+ Kf7 (95... Kd5
96. Ke7 $18) 96. Re7+ Kf8 97. Ra7 Be4 98. Bd6+ Kg8 99. Ke7 $18) (94... Be6 95.
Bc3 $18 {see mainline}) 95. Bb2 $1 Be6 (95... Nf4 96. Re7+ Kf8 97. Ba3 $18) (
95... Bf5 96. Re7+ Kf8 (96... Kg8 97. Ke8 $18) 97. Ra7 Be4 98. Ba3+ Kg8 99. Ke7
$18) (95... Bd1 96. Re7+ Kf8 97. Ra7 Bf3 98. Ba3+ Kg8 99. Ke7 $18) (95... Kf8
96. Ba3+ Kg8 97. Re8+ Kf7 98. Re7+ Kg8 99. Ra7 Ng3 100. Ke7 Bf3 101. Rc7 $18)
96. Bc3 $1 Bf5 (96... Nf4 $2 97. Rf3 $18) (96... Bd5 97. Re7+ Kf8 98. Be5 $18)
97. Re7+ Kf8 98. Be5 Bd3 99. Ra7 Be4 100. Rc7 Bb1 101. Bd6+ Kg8 102. Ke7 (102.
Ke7 Ng7 (102... Bf5 103. Be5 $18) 103. Rc8+ Kh7 104. Be5 Nf5+ (104... Ba2 105.
Bxg7 $18) 105. Kf8 $18) 1-0
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