Author: Dann Corbit
Date: 15:12:01 02/04/99
Go up one level in this thread
On February 04, 1999 at 17:44:16, Enrique Irazoqui wrote:
>In this position from a game against Crafty 16.4, Junior 5, or better yet the
>CD-ROM tablebases engine, played Ra8, losing immediately a drawn game. Can
>someone with Junior 5, Fritz 5xx or Nimzo 99 double-check this move with
>tablebases on?
>
>5rk1/8/7K/7P/R7/8/8/8 w - - 0 94
Crafty knows it was drawn:
pondering enabled.
EGTB cache memory = 16M bytes.
hash table memory = 48M bytes.
pawn hash table memory = 8M bytes.
play best book line after search.
EGTB access enabled
using tbpath=e:/crafty/release/tb
5 piece tablebase files found
+---+---+---+---+---+---+---+---+
8 | | | | | | *R| *K| |
+---+---+---+---+---+---+---+---+
7 | | | | | | | | |
+---+---+---+---+---+---+---+---+
6 | | | | | | | | K |
+---+---+---+---+---+---+---+---+
5 | | | | | | | | P |
+---+---+---+---+---+---+---+---+
4 | R | | | | | | | |
+---+---+---+---+---+---+---+---+
3 | | | | | | | | |
+---+---+---+---+---+---+---+---+
2 | | | | | | | | |
+---+---+---+---+---+---+---+---+
1 | | | | | | | | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
Crafty v16.4
White(1): go
end-game phase
clearing hash tables
Drawn at root, trying for swindle.
time surplus 0.00 time limit 13:20 (13:20)
depth time score variation (1)
7 0.07 1.87 1. Kg6 Rd8 2. Ra7 Rd6+ 3. Kg5 Rd5+
4. Kg4 Rd4+ 5. Kf5 Rd5+ 6. Kg6
7-> 0.08 1.87 1. Kg6 Rd8 2. Ra7 Rd6+ 3. Kg5 Rd5+
4. Kg4 Rd4+ 5. Kf5 Rd5+ 6. Kg6
8 0.16 1.96 1. Kg6 Rd8 2. Ra7 Rd6+ 3. Kg5 Rd5+
4. Kg4 Rd4+ 5. Kg3 Rd3+ 6. Kf4 Kf8
8-> 0.24 1.96 1. Kg6 Rd8 2. Ra7 Rd6+ 3. Kg5 Rd5+
4. Kg4 Rd4+ 5. Kg3 Rd3+ 6. Kf4 Kf8
9 0.56 1.89 1. Kg6 Rc8 2. Ra7 Rc6+ 3. Kg5 Rc5+
4. Kf6 Rc6+ 5. Kf5 Rc5+ 6. Kg4 Rc4+
7. Kf3 Kf8
9-> 0.78 1.89 1. Kg6 Rc8 2. Ra7 Rc6+ 3. Kg5 Rc5+
4. Kf6 Rc6+ 5. Kf5 Rc5+ 6. Kg4 Rc4+
7. Kf3 Kf8
10 1.09 2.11 1. Kg6 Rc8 2. Ra6 Kh8 3. h6 Rg8+ 4.
Kh5 Rg1 5. Ra7 Rh1+ 6. Kg6 Kg8
10-> 1.53 2.11 1. Kg6 Rc8 2. Ra6 Kh8 3. h6 Rg8+ 4.
Kh5 Rg1 5. Ra7 Rh1+ 6. Kg6 Kg8
11 2.05 2.08 1. Kg6 Rc8 2. Ra6 Kh8 3. h6 Rg8+ 4.
Kh5 Rg1 5. Ra7 Rg2 6. Re7 Kg8
11-> 3.85 2.08 1. Kg6 Rc8 2. Ra6 Kh8 3. h6 Rg8+ 4.
Kh5 Rg1 5. Ra7 Rg2 6. Re7 Kg8
12 6.70 2.04 1. Kg6 Rf1 2. Ra8+ Rf8 3. Ra7 Rf1 4.
h6 Rg1+ 5. Kh5 Rh1+ 6. Kg5 Rg1+ 7.
Kf5 Rf1+ 8. Kg4 Rh1 9. Rg7+ Kf8 10.
Kg5
12-> 12.17 2.04 1. Kg6 Rf1 2. Ra8+ Rf8 3. Ra7 Rf1 4.
h6 Rg1+ 5. Kh5 Rh1+ 6. Kg5 Rg1+ 7.
Kf5 Rf1+ 8. Kg4 Rh1 9. Rg7+ Kf8 10.
Kg5
13 16.99 1.79 1. Kg6 Rf1 2. Ra8+ Rf8 3. Ra7 Rf1 4.
Rg7+ Kh8 5. Rh7+ Kg8 6. Rd7 Rg1+ 7.
Kf6 Rf1+ 8. Ke5 Rg1 9. h6 Rh1 10. Rd6
Kf7
13-> 38.78 1.79 1. Kg6 Rf1 2. Ra8+ Rf8 3. Ra7 Rf1 4.
Rg7+ Kh8 5. Rh7+ Kg8 6. Rd7 Rg1+ 7.
Kf6 Rf1+ 8. Ke5 Rg1 9. h6 Rh1 10. Rd6
Kf7
14 47.77 1.70 1. Kg6 Rf1 2. Ra8+ Rf8 3. Ra7 Rf1 4.
Rg7+ Kh8 5. Rh7+ Kg8 6. Rd7 Rg1+ 7.
Kh6 Rg3 8. Re7 Rg4 9. Rh7 Rg2 10. Re7
Rh2
14-> 1:36 1.70 1. Kg6 Rf1 2. Ra8+ Rf8 3. Ra7 Rf1 4.
Rg7+ Kh8 5. Rh7+ Kg8 6. Rd7 Rg1+ 7.
Kh6 Rg3 8. Re7 Rg4 9. Rh7 Rg2 10. Re7
Rh2
15 1:57 1.68 1. Kg6 Rf1 2. Ra8+ Rf8 3. Ra7 Rf1 4.
Rg7+ Kh8 5. Rh7+ Kg8 6. Rd7 Rg1+ 7.
Kf6 Rf1+ 8. Ke6 Re1+ 9. Kf5 Rf1+ 10.
Kg5 Rf7 11. Rd8+ Kh7 12. h6 Rc7 13.
Rd6
ok.
White(1): quit
execution complete.
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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