Author: Tim Foden
Date: 00:38:17 05/29/03
Go up one level in this thread
On May 28, 2003 at 17:28:46, John Merlino wrote:
>So, just for fun, I wondered what the situation would be if it were Black to
>move in this position.
>
>[D]4r1k1/qp1r1p2/2pb1Bp1/p6p/2PP1n1R/1P3P2/P4P2/2Q2K1R b
>
>And I discovered that, at least for The King, finding the relatively obvious (at
>least for a patzer like me) move Re6 is much more difficult than I thought it
>would be. Instead, The King plays with odd moves like Rde7(??), causing a big
>fail low that takes almost three minutes to finally resolve to Re6 on a P3-750.
Looks like it is probably a good test position.
GLC3.00 finds Re6 eventually, after 50 minutes at 14 ply! My current
development version finds it after 27 minutes at 13 ply... whew!
Cheers, Tim.
Analysis:
GLC3.00, 48MB Hash, AXP 1.47GHz...
Game stage: Middle game
Current eval: 5.198
Ply Time Score Nodes Principal variation
4 0.571 +4.946 6400 Qb8 2. c5 Bc7 3. Kg1
5 0.781 +5.193 11612 Qb8 2. c5 Bc7 3. Qc2 Re2
5 1.041 +5.193 23216 Qb8 2. c5 Bc7 3. Qc2 Re2
6 2.894 +4.963 65486 Qb8 2. Qb1 b5 3. c5 Bc7 4. Kg1
6 3.545 +4.963 98981 Qb8 2. Qb1 b5 3. c5 Bc7 4. Kg1
7 4.937 +5.178 222664 Qb8 2. Bg5 Ne2 3. Qb2 Bf4 4. Bxf4 Nxf4 5. Kg1
7 5.237 +5.178 321583 Qb8 2. Bg5 Ne2 3. Qb2 Bf4 4. Bxf4 Nxf4 5. Kg1
8 7.390 +4.958 644096 Qb8 2. Qb1 c5 3. Rg1 Re6 4. Qf5 Kf8 5. Qg5 cxd4 6.
Bxd4
8 8.021 +4.958 917893 Qb8 2. Qb1 c5 3. Rg1 Re6 4. Qf5 Kf8 5. Qg5 cxd4 6.
Bxd4
9 10.355 +4.967 2526107 Qb8 2. Be5 Bxe5 3. dxe5 Ne6 4. f4 Qd8 5. Ke1 Rd3
6. f5
9 11.606 +4.967 3581870 Qb8 2. Be5 Bxe5 3. dxe5 Ne6 4. f4 Qd8 5. Ke1 Rd3
6. f5
10 19.428 +4.567 9523742 Qb8 {--} 2. Rxh5 gxh5 3. Rxh5 Nxh5 4. Qg5+ Kh7 5.
Qxh5+ Kg8 6. Qg4+ Kh7 7. Qxd7 Re2
10 19.989 +4.026 9991511 Qb8 2. Rxh5 gxh5 3. Rxh5 Re1+ 4. Kxe1 Qe8+ 5. Kf1
Qe2+ 6. Kg1 Nxh5 7. Qg5+ Kf8 8. Qh6+ Ke8 9. Qh8+
Bf8 10. Qxh5 Qxa2
10 23.083 +4.026 12655k Qb8 2. Rxh5 gxh5 3. Rxh5 Re1+ 4. Kxe1 Qe8+ 5. Kf1
Qe2+ 6. Kg1 Nxh5 7. Qg5+ Kf8 8. Qh6+ Ke8 9. Qh8+
Bf8 10. Qxh5 Qxa2
11 36.883 +3.626 23802k Qb8 {--} 2. Rxh5 gxh5 3. Rxh5 Re1+ 4. Kxe1 Qe8+ 5.
Kf1 Qe2+ 6. Kg1 Nxh5 7. Qg5+ Kf8 8. Qxh5 Qxf2+
9. Kxf2 Bg3+ 10. Kxg3
11 39.787 +3.016 26208k Qb8 2. Rxh5 gxh5 3. Rxh5 Re1+ 4. Kxe1 Qe8+ 5. Kf1
Qe2+ 6. Kg1 Nxh5 7. Qg5+ Kf8 8. Qxh5 Ke8 9. Qh8+
Bf8 10. Bg7
11 57.482 +3.172 40200k Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 Qe5 5. Bh4
Qf5 {ht}
11 58.604 +3.172 41255k Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 Qe5 5. Bh4
Qf5 {ht}
12 1:01.65 +3.347 43594k Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 b5 5. cxb5
cxb5 6. Bc5 Qd2 7. Bb6 Qd5 8. Qxa5 Qxf3
12 1:32.00 +3.347 68578k Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 b5 5. cxb5
cxb5 6. Bc5 Qd2 7. Bb6 Qd5 8. Qxa5 Qxf3
13 1:39.78 +3.350 74424k Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 b5 5. cxb5
cxb5 6. Bh4 Qd2 7. Qc5 Qxa2 8. Qxb5
13 2:22.20 +3.350 110239k Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 b5 5. cxb5
cxb5 6. Bh4 Qd2 7. Qc5 Qxa2 8. Qxb5
14 6:21.66 +2.950 303114k Rde7 {--} 2. Qxf4 Bxf4 3. Rxh5 gxh5 4. Rxh5 Re1+
5. Kg2 Rg1+ 6. Kxg1 Re1+ 7. Kg2 Rh1 8. Rxh1 Bh2
14 10:12.0 -9.961 491515k Rde7 2. Qxf4 Qxd4 3. Qxd4 Re1+ 4. Kg2 {ht}
14 14:58.0 -5.302 716441k Qb8 2. Qxf4 Re1+ 3. Kxe1 Bb4+ 4. Kd1 Qxf4 5. Rxf4
Rd6 6. a3 Bxa3 7. Be7 Rxd4+ 8. Rxd4 Bxe7 9. Rd7
Bc5 10. Kc1
14 33:07.4 -2.309 1515m a4 2. Qxf4 Bxf4 3. Rxh5 gxh5 4. Rxh5 Re1+ 5. Kxe1
Qa5+ 6. Rxa5 Rd6 7. Rf5 axb3 8. Rxf4 bxa2 9.
Rg4+ Kf8 10. Bg7+ Ke7
14 50:04.2 +2.527 2259m Re6 2. Rxf4 Bxf4 3. Qxf4 Qa8 4. Qg5 a4 5. Be5 axb3
6. axb3 Kf8 7. Qh6+ Ke7 8. Kg2 Qa2 9. Qe3
14 51:27.4 +2.527 2323m Re6 2. Rxf4 Bxf4 3. Qxf4 Qa8 4. Qg5 a4 5. Be5 axb3
6. axb3 Kf8 7. Qh6+ Ke7 8. Kg2 Qa2 9. Qe3
Analyse>exit
local: t=51:55.7 nps=752376.9 n=2344158197 (20.6% / 79.4%)
total: t=4:46:38 nps=758848.3 n=13050430316
stats: fh=88.3%/5.39%/2.107% draws=394695
trans: probes=482073012 hits=47035601 (9.76%) draft=36819390 (7.64%)
tcuts: exact=10136 (0.00%) upper=23440001 (4.86%) lower=9370195 (1.94%)
tstor: exact=15363 (0.01%) upper=168712838 (67.46%) lower=81353969 (32.53%)
ext: check=114474710 recap=7012649 ppush=3381383 1rep=11956741 thrt=0
q-moves: gen=1544113573 tested=721971840 made/un=260307680 max-dep=14
max eval diff: part-1=3.968 part-2=3.294
GLC development version, same settings...
Game stage: Middle game
Current eval: 4.491
Ply Time Score Nodes Principal variation
4 0.030 +4.562 6814 Qb8 2. Qd2 b6 3. Kg1
5 0.040 +4.784 11732 Qb8 2. Qd2 b6 3. Rg1 Re2
5 0.050 +4.784 23668 Qb8 2. Qd2 b6 3. Rg1 Re2
6 0.150 +4.693 82321 Qb8 2. Qb1 b5 3. c5 Bf8 4. Kg1
6 0.190 +4.693 108763 Qb8 2. Qb1 b5 3. c5 Bf8 4. Kg1
7 0.501 +4.923 304146 Qb8 2. Bg5 Ne2 3. Qd1 Bc5 4. Bf6 Bb4
7 0.621 +4.923 394816 Qb8 2. Bg5 Ne2 3. Qd1 Bc5 4. Bf6 Bb4
8 1.502 +4.523 1015878 Qb8 {--} 2. Rxh5 Nxh5 3. Rxh5 gxh5 4. Qg5+ Kh7 5.
Qf5+ Kh6 6. Qxd7 Re2
8 1.672 +3.567 1124346 Qb8 2. Rxh5 gxh5 3. Rxh5 Re1+ 4. Kxe1 Qe8+ 5. Kf1
Qe2+ 6. Kg1 Nxh5 7. Qg5+ Kf8 8. Qxh5 Qxa2
8 2.564 +3.567 1652932 Qb8 2. Rxh5 gxh5 3. Rxh5 Re1+ 4. Kxe1 Qe8+ 5. Kf1
Qe2+ 6. Kg1 Nxh5 7. Qg5+ Kf8 8. Qxh5 Qxa2
9 2.964 +3.511 1937707 Qb8 2. Rxh5 gxh5 3. Rxh5 Re1+ 4. Kxe1 Qe8+ 5. Kf1
Qe2+ 6. Kg1 Nxh5 7. Qg5+ Kf8 8. Qh6+ Kg8 9. Qxh5
Qxa2
9 6.559 +3.617 4117262 Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 Qe5 5. Bc5
Bd2
9 6.649 +3.617 4173481 Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 Qe5 5. Bc5
Bd2
10 13.359 +3.217 8506329 Rde7 {--} 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 Qe5 5.
Bc5 Bd2 6. Kg2
10 13.770 +3.030 8764235 Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 Qe5 5. Bc5
b5 6. Kg2
10 15.132 +3.218 9571443 Qb8 {++} 2. Qd2
10 18.937 +3.256 11866k Qb8 2. Rxh5 gxh5 3. Rxh5 Re1+ 4. Kxe1 Qe8+ 5. Kf1
Qe2+ 6. Kg1 Nxh5 7. Qg5+ Kf8 8. Qh6+ Ke8 9. Qh8+
Bf8 10. Qxh5 Qxa2
10 18.937 +3.256 11866k Qb8 2. Rxh5 gxh5 3. Rxh5 Re1+ 4. Kxe1 Qe8+ 5. Kf1
Qe2+ 6. Kg1 Nxh5 7. Qg5+ Kf8 8. Qh6+ Ke8 9. Qh8+
Bf8 10. Qxh5 Qxa2
11 24.185 +3.224 15289k Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 b6 5. Kg2
Qe5 6. Bh4 g5
11 37.083 +3.224 23644k Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 b6 5. Kg2
Qe5 6. Bh4 g5
12 39.326 +3.437 25017k Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 b6 5. Kg2
Qe5 6. Bh4 g5 7. Bg3
12 1:01.03 +3.437 39502k Rde7 2. Bxe7 Qxd4 3. Rxf4 Bxf4 4. Qa3 b6 5. Kg2
Qe5 6. Bh4 g5 7. Bg3
13 2:42.36 +3.037 104105k Rde7 {--} 2. Qxf4 Bxf4 3. Rxh5 gxh5 4. Rxh5 Re1+
5. Kg2 Bh6 6. Rxh6 Rh1 7. Rxh1 Re1 8. Rxe1 Qxd4
13 2:44.28 +3.038 105204k Rde7 {++} 2. Qxf4 Bxf4 3. Rxh5 gxh5 4. Rxh5 Re1+
5. Kg2 Rh1 6. Rxh1 Bh6 7. Bg5
13 3:01.42 -1.617 115069k Rde7 2. Qxf4 Bxf4 3. Rxh5 gxh5 4. Rxh5 Re1+ 5. Kg2
Bh6 {ht}
13 27:06.2 +2.335 922574k Re6 2. Rxf4 Bxf4 3. Qxf4 Rxf6 4. Qxf6 Rxd4 5. Ke2
Qc5 6. f4 a4 7. Qe5 Qxe5+ 8. fxe5 Re4+ 9. Kd3
Rxe5 10. bxa4
13 27:35.1 +2.335 939094k Re6 2. Rxf4 Bxf4 3. Qxf4 Rxf6 4. Qxf6 Rxd4 5. Ke2
Qc5 6. f4 a4 7. Qe5 Qxe5+ 8. fxe5 Re4+ 9. Kd3
Rxe5 10. bxa4
14 28:24.8 +2.393 968231k Re6 2. Rxf4 Rxf6 3. Rxf6 Qxd4 4. Rxd6 Rxd6 5. Kg2
Qd2 6. c5 Qxc1 7. Rxc1 Rd2 8. a3 h4
14 31:35.1 +2.393 1076m Re6 2. Rxf4 Rxf6 3. Rxf6 Qxd4 4. Rxd6 Rxd6 5. Kg2
Qd2 6. c5 Qxc1 7. Rxc1 Rd2 8. a3 h4
15 34:01.1 +2.303 1164m Re6 2. Rxf4 Bxf4 3. Qxf4 Rxf6 4. Qxf6 Rxd4 5. Ke2
Qc5 6. Rg1 Rd6 7. Rg5 Qb4 8. Qb2 f5
Analyse>exit
local: t=36:48.9 nps=570067.4 n=1259247997 (20.5% / 79.5%)
total: t=36:48.9 nps=570067.4 n=1259247997
stats: fh=89.4%/5.13%/2.001% draws=297287
trans: probes=258167522 hits=27370795 (10.60%) draft=20370813 (7.89%)
tcuts: exact=10568 (0.00%) upper=12475105 (4.83%) lower=5185688 (2.01%)
tstor: exact=15718 (0.01%) upper=85682507 (66.99%) lower=42213117 (33.00%)
ext: check=57066286 recap=3595987 ppush=1744484 1rep=17881320 thrt=0
q-moves: gen=834625924 tested=381538986 made/un=138543142 max-dep=13
max eval diff: part-1=7.630 part-2=3.895
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