Author: Tim Foden
Date: 04:33:59 06/05/02
Go up one level in this thread
On June 04, 2002 at 05:03:42, Andrew Williams wrote:
>This is from an ICC game between PostModernist and Crafty. The key here is Nb2!
>How long does it take your program to find it?
>
>[D]1r1r2k1/p5pp/4ppq1/2b5/nP6/4P1P1/P2BQ1BP/R2R3K b - b3 0 1 bm Nb2
GLC 2.18, AXP 1.46 GHz, 24MB Hash... 18.79 seconds.
Cheers, Tim.
Analysis:
>anal
Game stage: Middle game
Current eval: -0.079
Ply Time Score Nodes Principal Variation
4 0.05 +0.766 5037 Bxb4 2. Bxb4 Rxd1+ 3. Rxd1 Rxb4 4. Rd7
5 0.07 +0.366 20310 Bxb4 2. Bxb4 Rxd1+ 3. Rxd1 Rxb4 4. Rd8+ Kf7 5. Rd7+
Ke8 6. Rxa7 {--}
5 0.07 -0.174 23824 Bxb4 2. Bxb4 Rxd1+ 3. Rxd1 Rxb4 4. Rd8+ Kf7 5. Rd7+
Kg8 6. Rxa7
5 0.10 -0.124 44523 Bf8 2. Be1 Rd6 3. Bd2 Rbd8
5 0.12 -0.016 59169 Be7 2. Be1 f5 3. Rxd8+ Rxd8 4. Rc1 Qf7
5 0.13 -0.010 69714 Bd6 2. Qc4 Qf7 3. Rac1 Nb6
5 0.15 -0.010 84795 Bd6 2. Qc4 Qf7 3. Rac1 Nb6
6 0.18 -0.045 117922 Bd6 2. Be1 Be5 3. Rac1 Rxd1 4. Rxd1 Nc3 5. Bxc3
Bxc3
6 0.23 -0.045 152530 Bd6 2. Be1 Be5 3. Rac1 Rxd1 4. Rxd1 Nc3 5. Bxc3
Bxc3
7 0.29 -0.023 220624 Bd6 2. Be1 Qf7 3. Rac1 Nb6 4. a3 Nd5
7 0.40 +0.000 359069 Bxb4 2. Bxb4 Rxd1+ 3. Qxd1 Rxb4 4. Qd8+ Kf7 5. Qc7+
Kg8 6. Qc8+ Kf7 7. Qc7+
7 0.47 +0.000 436203 Bxb4 2. Bxb4 Rxd1+ 3. Qxd1 Rxb4 4. Qd8+ Kf7 5. Qc7+
Kg8 6. Qc8+ Kf7 7. Qc7+
8 0.76 -0.020 754828 Bd6 2. Be1 Be5 3. Rxd8+ Rxd8 4. Rc1 Nb6 5. Kg1 Qd3
6. Qxd3 Rxd3
8 1.18 +0.065 1188682 Be7 2. Be1 Rxd1 3. Rxd1 Bxb4 4. Qc4 Bxe1 5. Qxe6+
Qf7 6. Qxf7+ Kxf7 7. Bd5+ Kg6 8. Rxe1
8 1.33 +0.065 1335432 Be7 2. Be1 Rxd1 3. Rxd1 Bxb4 4. Qc4 Bxe1 5. Qxe6+
Qf7 6. Qxf7+ Kxf7 7. Bd5+ Kg6 8. Rxe1
9 1.80 -0.134 1803465 Be7 2. Be1 Rxd1 3. Qxd1 Nb6 4. Rc1 Rd8 5. Qf3 Qd3
6. Rc7
9 2.54 -0.060 2531154 Bd6 2. Be1 Qf7 3. Rac1 Nb6 4. Kg1 Be5 5. Bd2 Rbc8
6. Rxc8 Rxc8
9 3.24 -0.060 3352624 Bd6 2. Be1 Qf7 3. Rac1 Nb6 4. Kg1 Be5 5. Bd2 Rbc8
6. Rxc8 Rxc8
10 4.54 -0.081 4688178 Bd6 2. Be1 Be5 3. Rac1 Rxd1 4. Qxd1 Nb6 5. Kg1 Qf7
6. a4 Rf8
10 7.41 +0.042 7693489 Be7 2. Be1 Rxd1 3. Qxd1 Nb6 4. Rc1 Rd8 5. Qe2 Qd3
6. Qxd3 Rxd3 7. Rc3
10 8.30 +0.042 8447673 Be7 2. Be1 Rxd1 3. Qxd1 Nb6 4. Rc1 Rd8 5. Qe2 Qd3
6. Qxd3 Rxd3 7. Rc3
11 12.78 -0.006 13061k Be7 2. a3 Qc2 3. Rac1 Qa2 4. Bh3 Nb6 5. Kg1 Rd7 6.
Bg4 Rbd8
11 18.79 +0.442 19349k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Qa6 Qxd1+ 5. Be1
{++}
11 20.82 +0.956 21377k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Bh3 Rb2 5. Bxe6+
Kf8 6. Kg1 Rxd2 {ht}
11 21.30 +0.956 21848k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Bh3 Rb2 5. Bxe6+
Kf8 6. Kg1 Rxd2 {ht}
12 27.10 +1.023 27945k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Bh3 Rb2 5. Bxe6+
Kf8 6. Kg1 Rxd2 7. Rxd2 Qxd2 8. Qxd2 Rxd2
12 29.12 +1.023 30189k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Bh3 Rb2 5. Bxe6+
Kf8 6. Kg1 Rxd2 7. Rxd2 Qxd2 8. Qxd2 Rxd2
13 37.65 +0.861 38738k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Bh3 Rb2 5. Bxe6+
Kf8 6. Kg1 Ke7 7. c6 Kxe6 8. Qg4+ Kf7
13 45.75 +0.861 47717k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Bh3 Rb2 5. Bxe6+
Kf8 6. Kg1 Ke7 7. c6 Kxe6 8. Qg4+ Kf7
14 1:10 +0.919 72591k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Bh3 f5 5. e4 Rb1 6.
Rxb1 Qxb1+ 7. Qe1 Qxe1+ 8. Bxe1 Rd1 9. exf5 Rxe1+
10. Kg2 exf5 11. Bxf5
14 1:34 +0.919 97063k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Bh3 f5 5. e4 Rb1 6.
Rxb1 Qxb1+ 7. Qe1 Qxe1+ 8. Bxe1 Rd1 9. exf5 Rxe1+
10. Kg2 exf5 11. Bxf5
15 2:44 +0.919 167430k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Bh3 f5 5. e4 Rb1 6.
Rxb1 Qxb1+ 7. Qe1 Qxe1+ 8. Bxe1 Rd1 9. Kg2 Rxe1
10. exf5 exf5 11. Bxf5
15 3:44 +0.919 227523k Nb2 2. bxc5 Nxd1 3. Rxd1 Qc2 4. Bh3 f5 5. e4 Rb1 6.
Rxb1 Qxb1+ 7. Qe1 Qxe1+ 8. Bxe1 Rd1 9. Kg2 Rxe1
10. exf5 exf5 11. Bxf5
16 8:54 0/46 Nb2 >exit
local: t=8:59 nps=971061.8 n=523630518 (18.8% / 81.2%) fh=85.3%
total: t=8:59 nps=971061.8 n=523630518 draws=248666
trans: probes=98280028 hits=10201602 (10.38%) draft=7348714 (7.48%)
tcuts: exact=1378 (0.00%) upper=4470168 (4.55%) lower=2256919 (2.30%)
tstor: exact=1964 (0.00%) upper=33873316 (68.85%) lower=15325630 (31.15%)
ext: check=24079688 recap=1177440 ppush=557822 1rep=2341365 thrt=0
q-moves: gen=331729676 tested=168684244 made/un=69985022 max-dep=15
max eval diff: part-1=3.145 part-2=2.433
>
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