Author: Dann Corbit
Date: 22:00:27 04/06/00
Go up one level in this thread
Through 19 ply, it looks like Nb8+ is the best option:
EPD Kit revision date: 1996.04.21
found computer opening book file [e:/crafty/release/bookc.bin].
using cpu time
Crafty 17.10 vs ferret
pondering enabled.
EGTB cache memory = 6M bytes.
hash table memory = 24M bytes.
pawn hash table memory = 8M bytes.
EGTB access enabled
using tbpath=e:/crafty/release/tb,F:/KBP
4 piece tablebase files found
1302kb of RAM used for TB indices and decompression tables
Crafty v17.10
White(1): st 999
search time set to 999.00.
White(1): epdpfga epd.epd epd.out
PFGA: EPD record: 1
end-game phase
clearing hash tables
time surplus 0.00 time limit 16:39 (16:39)
nss depth time score variation (1)
8 1.11 -- 1. Nc7+
8 1.42 0.88 1. Nc7+ Ka7 2. Ra6+ Kb7 3. Rxa2 h3
4. Nd5 g2 5. Rb2+ Ka7 6. Rb1 h2 7.
Ra1+ Kb7 8. Rb1+ Kc6
8 1.63 1.03 1. Nb4 a1=Q 2. Nc6 Qa7+ 3. Nxa7 Kxa7
4. Rg6 Kb7 5. Rd6
8-> 1.66 1.03 1. Nb4 a1=Q 2. Nc6 Qa7+ 3. Nxa7 Kxa7
4. Rg6 Kb7 5. Rd6
9 1.78 ++ 1. Nb4!!
9 3.26 1.45 1. Nb4 Ka7 2. Ra6+ Kb7 3. Rxa2 h3 4.
Re2 g2 5. Re7+ Kb6 6. Nd5+ Kc5 7. Re1
9-> 4.29 1.45 1. Nb4 Ka7 2. Ra6+ Kb7 3. Rxa2 h3 4.
Re2 g2 5. Re7+ Kb6 6. Nd5+ Kc5 7. Re1
10 5.00 -- 1. Nb4
10 6.29 0.88 1. Nb4 Ka7 2. Ra6+ Kb7 3. Rxa2 h3 4.
Nd5 g2 5. Rb2+ Ka7 6. Rb1 h2 7. Ra1+
Kb7 8. Rb1+ Kc6
10-> 8.61 0.88 1. Nb4 Ka7 2. Ra6+ Kb7 3. Rxa2 h3 4.
Nd5 g2 5. Rb2+ Ka7 6. Rb1 h2 7. Ra1+
Kb7 8. Rb1+ Kc6
11 10.33 -- 1. Nb4
11 12.68 0.00 1. Nb4 Ka7 2. Ra6+ Kb7 3. Rxa2 h3 4.
Rb2 g2 5. Rb1 h2 6. Nd5+ Kc6 7. Nb4+
Kc5 8. Na6+ Kc4 9. Rc1+ Kd3 <HT>
11-> 17.03 0.00 1. Nb4 Ka7 2. Ra6+ Kb7 3. Rxa2 h3 4.
Rb2 g2 5. Rb1 h2 6. Nd5+ Kc6 7. Nb4+
Kc5 8. Na6+ Kc4 9. Rc1+ Kd3 <HT>
12 21.67 -- 1. Nb4
12 30.48 -1.66 1. Nb4 Ka7 2. Ra6+ Kb7 3. Rxa2 h3 4.
Ra6 g2 5. Rh6 g1=Q 6. Rxh3 Qg2 7. Rh4
Kc7
12 41.25 ++ 1. Nb8!!
12 57.57 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
12-> 57.76 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
13 59.62 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
13-> 1:14 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
14 1:17 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
14-> 1:41 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
15 1:51 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
15-> 2:31 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
16 2:50 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
16-> 4:00 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
17 4:31 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
17-> 6:44 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
18 7:51 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
18-> 11:45 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
19 14:34 0.00 1. Nb8 Ka7 2. Rb4 a1=Q 3. Nc6+ Ka6
4. Nb8+ Ka5 5. Nc6+ Ka6
time=16:39 cpu=99% mat=5 n=203962936 fh=96% nps=204087
ext-> checks=14115553 recaps=10554 pawns=714917 1rep=85011
thrt:62813
predicted=0 nodes=203962936 evals=8192210
endgame tablebase-> probes done=53780 successful=52844
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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