Author: Dann Corbit
Date: 09:06:29 08/03/99
Go up one level in this thread
The latest version of Crafty likes Rd8+ pretty consistently. Here is the EPD
record (acn is hosed by integral truncation):
4k3/p4prp/1p6/2b5/8/2Q3P1/P2R1PKP/4q3 w - - acd 19; acn 1310196265; acs 36001;
bm Rd8+; ce 141; id "WAC.038"; pv Rd8+ Kxd8 Qxe1 f6 Qc3 Ke7 f4 a5 Kf3 a4 Qe1+
Kf8 Qd1 Ra7 Kg4 a3 Kf5 Rf7 Qd5 Kg7 Qe6;
And here is the detail of the analysis. See also Peter Kappler's excellent
analysis in the other branch of the thread.
pondering enabled.
play best book line after search.
PFGA: EPD record: 1 ID: WAC.038
middle-game phase
clearing hash tables
time surplus 0.00 time limit 600:00 (600:00)
s depth time score variation (1)
White(1): exit
6-> 0.86 1.21 1. Rd8+ Kxd8 2. Qxe1 Kd7 3. Qe5 Rg6
4. Kf3
7 0.98 1.19 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qe4 Rc7
4. Qd3+ Rd7 5. Qe4
7-> 1.45 1.19 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qe4 Rc7
4. Qd3+ Rd7 5. Qe4
8 1.60 1.18 1. Rd8+ Kxd8 2. Qxe1 f6 3. Kf3 Kd7
4. Qe4 Kd6 5. h3
8-> 5.86 1.18 1. Rd8+ Kxd8 2. Qxe1 f6 3. Kf3 Kd7
4. Qe4 Kd6 5. h3
9 6.18 1.18 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qe6 Bd4
4. Qd5+ Rd7 5. Qa8+ Ke7 6. Qe4+ Kd8
7. f3
9-> 7.53 1.18 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qe6 Bd4
4. Qd5+ Rd7 5. Qa8+ Ke7 6. Qe4+ Kd8
7. f3
10 8.07 1.21 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qe6 Bd4
4. Kf3 Rd7 5. Qg8+ Kc7 6. Qc4+ Kb7
7. h3
10-> 10.28 1.21 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qe6 Bd4
4. Kf3 Rd7 5. Qg8+ Kc7 6. Qc4+ Kb7
7. h3
11 11.53 1.18 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qe6 Bd4
4. h3 Rd7 5. a4 Be5 6. f4 Re7
11-> 28.90 1.18 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qe6 Bd4
4. h3 Rd7 5. a4 Be5 6. f4 Re7
12 31.07 1.18 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qe6 Bd4
4. h3 Rd7 5. Kf3 Kc7 6. Qc4+ Kb7 7.
a4 f5 <HT>
12-> 6:39 1.18 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qe6 Bd4
4. h3 Rd7 5. Kf3 Kc7 6. Qc4+ Kb7 7.
a4 f5 <HT>
13 6:47 1.23 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Rf7
4. h3 Ke7 5. Kf3 Rg7 6. Qd3 Ke6 7.
Qe4+ Kd6 8. Ke2
13-> 11:01 1.23 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Rf7
4. h3 Ke7 5. Kf3 Rg7 6. Qd3 Ke6 7.
Qe4+ Kd6 8. Ke2
14 11:17 1.25 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. Qf3 Ke6 5. Qc6+ Kf5 6. Qd5+ Kg6
7. Qe4+ Kf7 8. Kf3 h5 9. a4 Rg4
14-> 14:06 1.25 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. Qf3 Ke6 5. Qc6+ Kf5 6. Qd5+ Kg6
7. Qe4+ Kf7 8. Kf3 h5 9. a4 Rg4
15 14:39 1.29 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. Qf3 Rf7 5. Qd5 f5 6. Qe5+ Kd7 7.
h3 Bd6 8. Qd5 Ke7 9. Kf3
15-> 21:29 1.29 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. Qf3 Rf7 5. Qd5 f5 6. Qe5+ Kd7 7.
h3 Bd6 8. Qd5 Ke7 9. Kf3
16 22:11 1.29 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. Qf3 Rf7 5. Qf5 Kf8 6. h3 Ke7 7.
f4 Kd6 8. Qd3+ Kc6 9. Qe4+ Kd6 10.
Kf3
16-> 44:08 1.29 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. Qf3 Rf7 5. Qf5 Kf8 6. h3 Ke7 7.
f4 Kd6 8. Qd3+ Kc6 9. Qe4+ Kd6 10.
Kf3
17 45:28 1.30 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. Qf3 Rf7 5. Qf5 Kd6 6. a4 Ke7 7.
Kf3 Kd6 8. Ke4 Re7+ 9. Kd3 <HT>
17-> 132:56 1.30 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. Qf3 Rf7 5. Qf5 Kd6 6. a4 Ke7 7.
Kf3 Kd6 8. Ke4 Re7+ 9. Kd3 <HT>
18 136:04 1.35 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. Qf3 Rf7 5. Qf5 Bd6 6. h3 Bc5 7.
Kf3 Kd6 8. Ke4 Re7+ 9. Kd3 Rf7 10.
Qf4+ Kc6 11. Qc4
18-> 286:18 1.35 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. Qf3 Rf7 5. Qf5 Bd6 6. h3 Bc5 7.
Kf3 Kd6 8. Ke4 Re7+ 9. Kd3 Rf7 10.
Qf4+ Kc6 11. Qc4
19 298:16 1.41 1. Rd8+ Kxd8 2. Qxe1 f6 3. Qc3 Ke7
4. f4 a5 5. Kf3 a4 6. Qe1+ Kf8 7. Qd1
Ra7 8. Kg4 a3 9. Kf5 Rf7 10. Qd5 Kg7
11. Qe6
time=600:00 cpu=99% mat=-3 n=1310196265 fh=3% nps=36394
ext-> checks=1169572130 recaps=19608518 pawns=645664 1rep=63479022
thrt:3670675
predicted=0 nodes=1310196265 evals=1915076847
endgame tablebase-> probes done=0 successful=0
Crafty v16.15
White(1): quit
execution complete.
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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