Author: Tim Foden
Date: 13:00:05 07/26/03
Go up one level in this thread
On July 26, 2003 at 15:35:43, ALI MIRAFZALI wrote:
>The following position is from the Kasparov -Kramnik match (London 2000)
>[D]Q7/8/5pk1/PpP3p1/6n1/3qB1PK/1P3P2/8 b - - 0 1
>In this position Kasparov played 62...Qf5 and later drew .For some reason this
>move is hard to find even for modern chess programs and fast hardware.It takes
>12 hours and 50 minuties for Chessmaster 9000 on a 1.8 gig machine to find
>62...Qf5 and with it a 0.00 score.It does this at ply 16.At this ply it gives
>the PV 62...Qf5 63.Kg2 Nxe3+ 64.fxe3 Qc2+ 65.Kh1 Qd1+ 66.Kg2 Qc2+.
>Please indicate the result for your program.
GLC 3.00, AXP 1.47GHz, 24MB Hash...
8 seconds to choose Qf5.
2:30 to see that it is a draw.
Cheers, Tim. GLC site --> http://www.7sun.com/chess
Analysis:
Game stage: Endgame
Current eval: -3.096
Ply Time Score Nodes Principal variation
5 0.010 -1.464 9873 Qf1+ 2. Qg2 Nxe3 3. fxe3 Qf5+ 4. g4 Qxc5 5. e4
6 0.020 -1.844 17356 Qf1+ 2. Qg2 Nxe3 3. fxe3 Qf5+ 4. g4 Qxc5 5. Qe4+
Kg7 6. a6
6 0.030 -1.844 30814 Qf1+ 2. Qg2 Nxe3 3. fxe3 Qf5+ 4. g4 Qxc5 5. Qe4+
Kg7 6. a6
7 0.040 -1.612 42826 Qf1+ 2. Qg2 Nxe3 3. fxe3 Qf5+ 4. g4 Qxc5 5. Qe4+
Kg7 6. b4 Qc4
7 0.090 -1.612 97883 Qf1+ 2. Qg2 Nxe3 3. fxe3 Qf5+ 4. g4 Qxc5 5. Qe4+
Kg7 6. b4 Qc4
8 0.140 -1.610 149640 Qf1+ 2. Qg2 Nxe3 3. Qxf1 g4+ 4. Kh4 Nxf1 5. a6 Nd2
6. a7 Nf3+ 7. Kxg4 Ne5+ 8. Kf4
8 0.281 -1.610 296368 Qf1+ 2. Qg2 Nxe3 3. Qxf1 g4+ 4. Kh4 Nxf1 5. a6 Nd2
6. a7 Nf3+ 7. Kxg4 Ne5+ 8. Kf4
9 2.053 -2.010 1960166 Qf1+ {--} 2. Qg2 Nxe3 3. Qxf1 g4+ 4. Kh4 Nxf1 5.
a6 Nd2 6. a7 Nf3+ 7. Kxg4 Ne5+ 8. Kh3 Ng4 9.
a8=Q
9 2.674 -2.163 2578979 Qf1+ 2. Qg2 Qd3 3. b4 Qf5 4. Bd2 Nxf2+ 5. Kh2 Ng4+
6. Kg1 Qb1+ 7. Qf1 Qxf1+ 8. Kxf1 Ne5
9 3.165 -2.163 3046540 Qf1+ 2. Qg2 Qd3 3. b4 Qf5 4. Bd2 Nxf2+ 5. Kh2 Ng4+
6. Kg1 Qb1+ 7. Qf1 Qxf1+ 8. Kxf1 Ne5
10 4.767 -2.139 4543127 Qf1+ 2. Qg2 Qb1 3. Qd5 Nxe3 4. fxe3 Qxb2 5. c6 Qa1
6. Qe4+ Kg7 7. Qe7+ Kg6 8. Qb4
10 7.862 -1.839 7289382 Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Kh3 Qxf3
6. Qf8+ Kh7 7. Qe7+ Kg6 8. Bd4
10 8.152 -1.839 7569107 Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Kh3 Qxf3
6. Qf8+ Kh7 7. Qe7+ Kg6 8. Bd4
11 14.371 -1.439 13215k Qf5 {++} 2. Qe8+ Kg7 3. Qxb5 Nxe3+ 4. Kh2 Qxf2+ 5.
Kh3
11 16.985 -1.347 15543k Qf5 2. Qe8+ Kg7 3. Kg2 Qd5+ 4. f3 Ne5 5. Qh5 Nc4
6. Bc1 Nxa5 7. b4 Nc6
11 17.545 -1.347 16137k Qf5 2. Qe8+ Kg7 3. Kg2 Qd5+ 4. f3 Ne5 5. Qh5 Nc4
6. Bc1 Nxa5 7. b4 Nc6
Generating internal KP-K end-game table...
Done (0.201 secs)
12 32.367 -0.947 29403k Qf5 {++} 2. Qe8+ Kh6 3. Qxb5 Nxe3+ 4. Kh2 Qxf2+ 5.
Kh3
12 42.081 -0.780 38203k Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2 Qxf3+
6. Kg1 Qd1+ 7. Kh2 Qe2 8. Qh8+ Kg6 9. Kg2 Qxb2
10. a6
12 46.828 -0.780 42601k Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2 Qxf3+
6. Kg1 Qd1+ 7. Kh2 Qe2 8. Qh8+ Kg6 9. Kg2 Qxb2
10. a6
13 1:51.69 -0.380 99283k Qf5 {++} 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2
Qxf3+ 6. Kg1 Qd1+ 7. Kh2 Qd2 8. Qxb5 Qxf2+ 9.
Kh3
13 2:29.47 +0.000 132966k Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2 Qxf3+
6. Kg1 Qd1+ 7. Kh2 Qf1 8. Qh8+ Kg6 9. Qg8+ Kh6
10. Qh8+
13 2:31.42 +0.000 135044k Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2 Qxf3+
6. Kg1 Qd1+ 7. Kh2 Qf1 8. Qh8+ Kg6 9. Qg8+ Kh6
10. Qh8+
14 3:19.66 +0.000 178930k Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2 Qxf3+
6. Kg1 Qd1+ 7. Kh2 Qf1 8. Qh8+ Kg6 9. Qg8+ Kh6
10. Qh8+
14 3:23.55 +0.000 183075k Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2 Qxf3+
6. Kg1 Qd1+ 7. Kh2 Qf1 8. Qh8+ Kg6 9. Qg8+ Kh6
10. Qh8+
15 5:24.85 +0.000 291091k Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2 Qxf3+
6. Kg1 Qd1+ 7. Kh2 Qf1 8. Qh8+ Kg6 9. Qg8+ Kh6
10. Qh8+
15 5:33.27 +0.000 299856k Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2 Qxf3+
6. Kg1 Qd1+ 7. Kh2 Qf1 8. Qh8+ Kg6 9. Qg8+ Kh6
10. Qh8+
16 10:58.0 +0.000 593287k Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2 Qxf3+
6. Kg1 Qd1+ 7. Kh2 Qf1 8. Qh8+ Kg6 9. Qg8+ Kh6
10. Qh8+
16 11:21.3 +0.000 616590k Qf5 2. Qe8+ Kh6 3. Kg2 Qd5+ 4. f3 Ne5 5. Bf2 Qxf3+
6. Kg1 Qd1+ 7. Kh2 Qf1 8. Qh8+ Kg6 9. Qg8+ Kh6
10. Qh8+
Analyse>exit
local: t=11:39.3 nps=904154.6 n=632271668 (29.5% / 70.5%)
total: t=27:17.1 nps=749985.4 n=1227789819
stats: fh=88.8%/4.30%/1.505% draws=905461
trans: probes=185482605 hits=35320114 (19.04%) draft=24838690 (13.39%)
tcuts: exact=1041 (0.00%) upper=18775791 (10.12%) lower=4722815 (2.55%)
tstor: exact=1026 (0.00%) upper=78540856 (70.27%) lower=33223630 (29.73%)
ext: check=71731680 recap=2221359 ppush=2835902 1rep=5146422 thrt=0
q-moves: gen=205946153 tested=135406338 made/un=63479141 max-dep=9
max eval diff: part-1=5.781 part-2=1.218
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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