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Subject: Re: Endgame test position

Author: Dann Corbit

Date: 10:01:21 05/15/02

Go up one level in this thread


On May 15, 2002 at 07:46:27, Andrew Williams wrote:

>How long does it take your program to see Rxe7! here?
>
>[D]4r1k1/2R1N1b1/8/p7/1p6/6PK/7P/8 b - - bm Rxe7

ExChess:
--------------------*** rxe7.epd ***--------------------


Black to Move  Book Move(s): Rxe7
  Test Position:
  1.  -0.04     0    91925   1. ... Rxe7 2. Rxe7
  1.   2.65     0    91926   1. ... Kf7
  1.   2.65     0    91929   1. ... Kf7
  2.  -0.66     0    91975   1. ... Kf7 2. Nf5+ Ke6 3. Nxg7+
  2.  -0.04     0    92006   1. ... Rxe7 2. Rxe7
  2.   2.04     0    92049   1. ... Kh7 2. g4
  2.   2.04     0    92051   1. ... Kh7 2. g4
  3.   ++       0    92118   1. ... Kh7
  3.   2.09     0    92204   1. ... Kh7 2. Nf5 Rg8 3. Nxg7 Rxg7
  3.   2.09     0    92224   1. ... Kh7 2. Nf5 Rg8 3. Nxg7 Rxg7
  4.   --
  4.   1.78     0    92508   1. ... Kh7 2. Nf5 Rg8 3. g4
  4.   1.78     0    92528   1. ... Kh7 2. Nf5 Rg8 3. g4
  5.   --
  5.   0.82     0    93793   1. ... Kh7 2. Nf5 Rg8 3. Ra7 b3 4. Nxg7 Rxg7 5.
Rxa5
  5.   ++       0    93899   1. ... Rxe7
  5.   0.82     0    94538   1. ... Kh7 2. Nf5 Rg8 3. Ra7 b3 4. Nxg7 Rxg7 5.
Rxa5
  5.   1.02     0    94723   1. ... Rxe7 2. Rxe7 b3 3. Re8+ Kf7 4. Re1
  5.   2.09     0    99300   1. ... Kf8 2. Ng6+ Kg8 3. Ne7+ Kh7 4. Nf5 Rg8 5.
Nxg7 Rxg7
  5.   2.09     0    99301   1. ... Kf8 2. Ng6+ Kg8 3. Ne7+ Kh7 4. Nf5 Rg8 5.
Nxg7 Rxg7
  6.   --
  6.   0.82     0   101003   1. ... Kh7 2. Nf5 Rg8 3. Ra7 b3 4. Nxg7 Rxg7 5.
Rxa5
  6.   ++       0   101336   1. ... Rxe7
  6.   0.82     0   101903   1. ... Kh7 2. Nf5 Rg8 3. Ra7 b3 4. Nxg7 Rxg7 5.
Rxa5
  6.   1.70     0   102302   1. ... Rxe7 2. Rxe7 b3 3. Re8+ Kf7 4. Re1 b2
  6.   1.70     0   119807   1. ... Rxe7 2. Rxe7 b3 3. Re8+ Kf7 4. Re1 b2
  7.   1.49     0   126075   1. ... Rxe7 2. Rxe7 b3 3. g4 b2 4. Re1 a4 5. g5
  7.   1.49     0   129017   1. ... Rxe7 2. Rxe7 b3 3. g4 b2 4. Re1 a4 5. g5
  8.   ++       0   130018   1. ... Rxe7
  8.   1.91     0   144978   1. ... Rxe7 2. Rxe7 b3 3. Kg4 b2 4. Rb7 a4 5. Rb8+
Kf7 6. h4
  8.   1.91     0   157423   1. ... Rxe7 2. Rxe7 b3 3. Kg4 b2 4. Rb7 a4 5. Rb8+
Kf7 6. h4
  9.   ++       0   207366   1. ... Rxe7
  9.   --
  9.   2.35     0   263587   1. ... Rxe7 2. Rxe7 b3 3. Re1 a4 4. Re8+ Kf7 5. Rb8
b2
  9.   2.35     0   287535   1. ... Rxe7 2. Rxe7 b3 3. Re1 a4 4. Re8+ Kf7 5. Rb8
b2
 10.   ++       0   359156   1. ... Rxe7
 10.   4.61     1   871383   1. ... Rxe7 2. Rxe7 b3 3. g4 a4 4. Re4 b2 5. Rxa4
b1=Q 6. Ra8+ Kf7 7. g5
 10.   4.61     1   877379   1. ... Rxe7 2. Rxe7 b3 3. g4 a4 4. Re4 b2 5. Rxa4
b1=Q 6. Ra8+ Kf7 7. g5
 11.   4.61     4  2154405   1. ... Rxe7 2. Rxe7 b3 3. Kg4 b2 4. Re8+ Kh7 5. Rb8
a4 6. h4 a3 7. Ra8 Kg6 8. Rxa3 b1=Q
 11.   4.61     4  2184221   1. ... Rxe7 2. Rxe7 b3 3. Kg4 b2 4. Re8+ Kh7 5. Rb8
a4 6. h4 a3 7. Ra8 Kg6 8. Rxa3 b1=Q
 12.   4.62    11  4750401   1. ... Rxe7 2. Rxe7 b3 3. g4 a4 4. Re8+ Kh7 5. g5
b2 6. Rb8 a3 7. Ra8 b1=Q 8. Rxa3 Kg6
 12.   4.62    11  4809963   1. ... Rxe7 2. Rxe7 b3 3. g4 a4 4. Re8+ Kh7 5. g5
b2 6. Rb8 a3 7. Ra8 b1=Q 8. Rxa3 Kg6
 13.   ++      31 12390773   1. ... Rxe7
 13.   --
 13.   4.97    84 36605589   1. ... Rxe7 2. Rxe7 b3 3. g4 a4 4. Rb7 b2 5. Rb8+
Kh7
 13.   4.97    84 36792991   1. ... Rxe7 2. Rxe7 b3 3. g4 a4 4. Rb7 b2 5. Rb8+
Kh7



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