Author: Jeremiah Penery
Date: 18:24:27 09/22/03
Go up one level in this thread
On September 22, 2003 at 18:16:56, Slater Wold wrote:
>[D]5r2/P7/1K6/6p1/2p2kp1/2Nb4/1P6/7R w - - 0 50
>
>Can your program see this position is lost for white?
>
>Shredder 7.04 & HIARCS 9 couldn't...
Modified Crafty 19.3(?), AthlonXP 1900+
It looks like it's going to see it fast, then sticks on Kb7 with drawscore for
too long.
depth time score variation (1)
8 0.20 0.94 1. Ra1 g3 2. a8=Q Rxa8 3. Rxa8 g2 4.
Ra1 g4
8-> 0.27 0.94 1. Ra1 g3 2. a8=Q Rxa8 3. Rxa8 g2 4.
Ra1 g4
9 0.58 -- 1. Ra1
9 1.06 0.72 1. Ra1 g3 2. Kb7 g4 3. a8=Q Rxa8 4.
Rxa8 Be4+ 5. Nxe4 Kxe4
9-> 1.46 0.72 1. Ra1 g3 2. Kb7 g4 3. a8=Q Rxa8 4.
Rxa8 Be4+ 5. Nxe4 Kxe4
10 2.26 -- 1. Ra1
10 3.70 0.20 1. Ra1 g3 2. Kb7 g2 3. Rg1 Rf7+ 4.
Kb6 Rf6+ 5. Kb5 Rf5+ 6. Kb4 Rf8 7.
Nd5+ Kf3
10-> 7.07 0.20 1. Ra1 g3 2. Kb7 g2 3. Rg1 Rf7+ 4.
Kb6 Rf6+ 5. Kb5 Rf5+ 6. Kb4 Rf8 7.
Nd5+ Kf3
11 9.23 -- 1. Ra1
11 11.91 -0.52 1. Ra1 g3 2. Nd5+ Kf3 3. Nc7 g2 4.
Ne6 Ra8 5. Nxg5+ Kg4 6. Nf7 Bf1 7.
Ne5+ Kf4 8. Ng6+
11 23.66 -0.17 1. Nd5+ Kf3 2. Nb4 Rg8 3. Ra1 Be4 4.
Kc5 Rc8+ 5. Kd4 g3 6. Rf1+ Ke2 7. Rf7
Ba8
11 32.36 0.00 1. Kb7 Rf7+ 2. Kb8 Rf8+ 3. Kb7
11-> 34.86 0.00 1. Kb7 Rf7+ 2. Kb8 Rf8+ 3. Kb7
12 35.71 0.00 1. Kb7 Rf7+ 2. Kb8 Rf8+ 3. Kb7
12-> 49.49 0.00 1. Kb7 Rf7+ 2. Kb8 Rf8+ 3. Kb7
13 51.35 0.00 1. Kb7 Rf7+ 2. Kb8 Rf8+ 3. Kb7
13-> 1:19 0.00 1. Kb7 Rf7+ 2. Kb8 Rf8+ 3. Kb7
14 1:34 0.00 1. Kb7 Rf7+ 2. Kb8 Rf8+ 3. Kb7
14-> 2:31 0.00 1. Kb7 Rf7+ 2. Kb8 Rf8+ 3. Kb7
15 4:34 -- 1. Kb7
15 6:51 -1.56 1. Kb7 g3 2. Rg1 Kf3 3. Nd1 g2 4. Kb6
Bf1 5. Kb7 Ke2 6. a8=Q Rxa8 7. Kxa8
Kxd1 8. Kb8
15 14:02 -0.18 1. Nd5+ Kf3 2. Rh5 Be4 3. Rxg5 g3 4.
Nc3 Ba8 5. Kc5 g2 6. Kxc4 Kf2 7. Nd1+
Ke2 8. Nc3+ Kf1 9. b4 Rc8+ 10. Kd4
g1=Q+ 11. Rxg1+ Kxg1
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