Author: Janos Keinrath
Date: 12:53:56 01/09/01
[D]8/p4k1p/1p3p2/6p1/4K1P1/1r1N2P1/8/8 b - -
I tried this position with Crafty and it needs 15 ply to find the
correct move Rxd3 (at ply 13 it found the move, but switched to f5).
For human players easy to see that after Rxd3 white has no defense,
the passed pawns win.
How many ply needs for other programs?
clearing hash tables
time surplus 0.00 time limit 10:00 (10:00)
nss depth time score variation (1)
1 0.00 5.79 1. ... Rxd3 2. Kxd3
1 0.03 6.03 1. ... Rc3
1-> 0.32 6.03 1. ... Rc3
2 0.36 6.03 1. ... Rc3 2. Kd4
2-> 0.40 6.03 1. ... Rc3 2. Kd4
3 0.41 6.03 1. ... Rc3 2. Kd4 Rc2
3-> 0.42 6.03 1. ... Rc3 2. Kd4 Rc2
4 0.42 6.01 1. ... Rc3 2. Kd4 Rxd3+ 3. Kxd3 a5
4-> 0.43 6.01 1. ... Rc3 2. Kd4 Rxd3+ 3. Kxd3 a5
5 0.43 6.05 1. ... Rc3 2. Kd4 Rc2 3. Nb4 Rd2+ 4.
Ke4
5 0.44 6.15 1. ... Rxd3 2. Kxd3 a5 3. Ke4 a4
5 0.45 6.50 1. ... a5 2. Kd4 a4 3. Kc4 Ke6
5-> 0.46 6.50 1. ... a5 2. Kd4 a4 3. Kc4 Ke6
6 0.46 6.83 1. ... a5 2. Kd4 a4 3. Ke4 a3 4. Kd4
6-> 0.48 6.83 1. ... a5 2. Kd4 a4 3. Ke4 a3 4. Kd4
7 0.50 6.95 1. ... a5 2. Kd4 a4 3. Ke3 b5 4. Ke4
a3
7-> 0.52 6.95 1. ... a5 2. Kd4 a4 3. Ke3 b5 4. Ke4
a3
8 0.55 ++ 1. ... a5!!
8-> 0.64 7.34 1. ... a5 2. Kd4 a4 3. Ke3 b5 4. Ke4
a3
9 0.68 ++ 1. ... a5!!
9-> 0.83 7.73 1. ... a5 2. Kd4 a4 3. Ke3 b5 4. Ke4
a3
10 0.97 ++ 1. ... a5!!
10-> 1.62 8.12 1. ... a5 2. Kd4 a4 3. Ke3 b5 4. Ke4
a3
11 1.87 ++ 1. ... a5!!
11-> 3.42 8.51 1. ... a5 2. Kd4 a4 3. Ke3 b5 4. Ke4
a3
12 4.38 ++ 1. ... a5!!
12-> 30.05 8.90 1. ... a5 2. Kd4 a4 3. Ke3 b5 4. Ke4
a3
13 41.62 9.09 1. ... a5 2. Ne1 Rxg3 3. Kd5 a4 4.
Kc4 Rxg4+ 5. Kb5 a3 6. Nc2 a2 7. Kxb6
<HT>
13 43.72 ++ 1. ... f5+!!
13 1:29 9.96 1. ... f5+ 2. gxf5 Rxd3 3. Kxd3 h5
4. Ke4 a5 5. Ke5 a4 6. f6 h4 7. g4
a3 8. Kd6
13 1:41 10.25 1. ... Rxd3 2. Kxd3 Kg6 3. Ke4 a5 4.
Kd5 h5 5. gxh5+ Kxh5 6. Ke6 Kg4 7.
Kxf6 a4 8. Ke5 a3
13-> 1:42 10.25 1. ... Rxd3 2. Kxd3 Kg6 3. Ke4 a5 4.
Kd5 h5 5. gxh5+ Kxh5 6. Ke6 Kg4 7.
Kxf6 a4 8. Ke5 a3
14 1:42 ++ 1. ... Rxd3!!
14 1:44 10.66 1. ... Rxd3 2. Kxd3 Kg6 3. Ke4 a5 4.
Kd4 h5 5. gxh5+ Kxh5 6. Kd5 Kg4 7.
Ke6 Kxg3 8. Kxf6 Kf4 9. Ke6
14 2:09 10.75 1. ... f5+ 2. gxf5 Rxd3 3. Kxd3 h5
4. g4 h4 5. Ke4 a5 6. Kd4 h3 7. Kd5
Kf6 8. Kc6 Ke5 9. Kxb6
14-> 3:17 10.75 1. ... f5+ 2. gxf5 Rxd3 3. Kxd3 h5
4. g4 h4 5. Ke4 a5 6. Kd4 h3 7. Kd5
Kf6 8. Kc6 Ke5 9. Kxb6
15 4:06 11.02 1. ... f5+ 2. gxf5 Rxd3 3. Kxd3 h5
4. Ke4 a5 5. Ke5 a4 6. f6 h4 7. gxh4
gxh4 8. Kf4 Kxf6 9. Kg4 a3 10. Kxh4
15 8:15 11.41 1. ... Rxd3 2. Kxd3 Kg6 3. Kd4 h5 4.
Ke4 h4 5. gxh4 gxh4 6. Kf3 a5 7. Kg2
a4 8. Kh3 Kg5 9. Kg2
15-> 8:36 11.41 1. ... Rxd3 2. Kxd3 Kg6 3. Kd4 h5 4.
Ke4 h4 5. gxh4 gxh4 6. Kf3 a5 7. Kg2
a4 8. Kh3 Kg5 9. Kg2
16 8:36 ++ 1. ... Rxd3!!
16 8:50 11.87 1. ... Rxd3 2. Kxd3 Kg6 3. Ke4 a5 4.
Kd5 h5 5. gxh5+ Kxh5 6. Ke6 Kg6 7.
Kd5 Kf5 8. Kc6 a4 9. Kxb6 a3 10. Kc5
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