Author: Dann Corbit
Date: 00:17:56 01/22/02
Go up one level in this thread
Why without tablebase files? The reason I ask is that this position is the
"poster child" for 'Why every program ought to have tablebase friles' and the
evils that befall us when we leave them out.
[D]8/r7/8/p2k4/R3p1K1/8/8/8 b - - bm Kc5; am Ke5;
Pepito with Tablebase files finds the right move in 11 seconds at ply 10:
Son correctas: Kc5
+----+----+----+----+----+----+----+----+
8 | | | | | | | | |
+----+----+----+----+----+----+----+----+
7 | *R | | | | | | | |
+----+----+----+----+----+----+----+----+
6 | | | | | | | | |
+----+----+----+----+----+----+----+----+
5 | *P | | | *K | | | | |
+----+----+----+----+----+----+----+----+
4 | R | | | | *P | | K | |
+----+----+----+----+----+----+----+----+
3 | | | | | | | | |
+----+----+----+----+----+----+----+----+
2 | | | | | | | | |
+----+----+----+----+----+----+----+----+
1 | | | | | | | | |
+----+----+----+----+----+----+----+----+
a b c d e f g h
5 320 236 1756 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ra6-a8
5 320 320 3749 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ra6-a8
6 310 383 4949 Kd5-e5 Kg4-g3 Ra7-a8 Kg3-f2 Ke5-f4 Kf2-e2
6 310 405 6979 Kd5-e5 Kg4-g3 Ra7-a8 Kg3-f2 Ke5-f4 Kf2-e2
7 315 414 8095 Kd5-e5 Kg4-g3 Ra7-a8 Kg3-f2 Ke5-f4 Kf2-e2 Kf4-e5
7 315 450 12111 Kd5-e5 Kg4-g3 Ra7-a8 Kg3-f2 Ke5-f4 Kf2-e2 Kf4-e5
8 305 486 15547 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
8 305 526 21691 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
9 315 547 25471 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
Kf4-f3
9 315 616 34482 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
Kf4-f3
10 300 664 44849 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
Kf4-f3 Kd2-c3
10 301 1112 110231 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a2 Ra7-e7 Kf4-e3 a4 Ra2-f2
Kb5-c4 Rf2-f4
10 301 1134 113639 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a2 Ra7-e7 Kf4-e3 a4 Ra2-f2
Kb5-c4 Rf2-f4
11 307 1711 256396 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 Ra7-e7 Ra1-b1
11 307 1836 280710 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 Ra7-e7 Ra1-b1
12 312 2499 476213 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 Ra7-f7 Ra1-e1 a3
Re1-a1 Kb5-c4 Ra1-a2
12 312 2584 506462 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 Ra7-f7 Ra1-e1 a3
Re1-a1 Kb5-c4 Ra1-a2
13 339 4038 1072859 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a2 a4 Kf4-e3 Ra7-d7 Ke3-e2
Rd7-d3 Ra2-b2 Rd3-b3 Rb2-c2 e3 Rc2-c1
13 339 4104 1116041 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a2 a4 Kf4-e3 Ra7-d7 Ke3-e2
Rd7-d3 Ra2-b2 Rd3-b3 Rb2-c2 e3 Rc2-c1
14 340 5118 1782435 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 Ra7-f7 Ke3-d4
Rf7-d7 Kd4-c3 a3 Ra1-a2 e3 Ra2-e2 Rd7-e7
14 340 5277 1856404 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 Ra7-f7 Ke3-d4
Rf7-d7 Kd4-c3 a3 Ra1-a2 e3 Ra2-e2 Rd7-e7
15 355 7382 2872261 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 Ra7-f7 Ke3-d4
Rf7-d7 Kd4-e3 Rd7-d3 Ke3-f4 a3 Ra1-a2 e3 Ra2-e2 Kb5-c4 Kf4-e4
15 355 7557 2937783 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 Ra7-f7 Ke3-d4
Rf7-d7 Kd4-e3 Rd7-d3 Ke3-f4 a3 Ra1-a2 e3 Ra2-e2 Kb5-c4 Kf4-e4
16 388 13550 5246428 Kd5-c5 !!
16 439 21174 8644657 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 a3 Ra1-a2 Kb5-c4
Ra2-a1 Kc4-b3 Ra1-e1 a2 Re1-a1 Kb3-b2 Ra1-e1 a1=Q Re1xa1 Kb2xa1 Ke3xe4
16 439 21536 8828615 Kd5-c5 Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 a3 Ra1-a2 Kb5-c4
Ra2-a1 Kc4-b3 Ra1-e1 a2 Re1-a1 Kb3-b2 Ra1-e1 a1=Q Re1xa1 Kb2xa1 Ke3xe4
17 406 22433 9299550 Kd5-c5 ?? Kg4-f4 Kc5-b5 Ra4-a1 a4 Kf4-e3 a3 Ra1-a2
Kb5-c4 Ra2-a1 Kc4-b3 Ra1-e1 a2 Re1-a1 Kb3-b2 Ra1-e1 a1=Q Re1xa1 Kb2xa1 Ke3xe4
17 407 24703 10568731 Kd5-c5 !!
Pepito without tablebase files is still clueless two minutes later while digging
on ply #20:
Son correctas: Kc5
+----+----+----+----+----+----+----+----+
8 | | | | | | | | |
+----+----+----+----+----+----+----+----+
7 | *R | | | | | | | |
+----+----+----+----+----+----+----+----+
6 | | | | | | | | |
+----+----+----+----+----+----+----+----+
5 | *P | | | *K | | | | |
+----+----+----+----+----+----+----+----+
4 | R | | | | *P | | K | |
+----+----+----+----+----+----+----+----+
3 | | | | | | | | |
+----+----+----+----+----+----+----+----+
2 | | | | | | | | |
+----+----+----+----+----+----+----+----+
1 | | | | | | | | |
+----+----+----+----+----+----+----+----+
a b c d e f g h
5 320 107 2338 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ra6-a8
5 320 107 5009 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ra6-a8
6 310 108 7965 Kd5-e5 Kg4-g3 Ra7-a8 Kg3-f2 Ke5-f4 Kf2-e2
6 310 109 13171 Kd5-e5 Kg4-g3 Ra7-a8 Kg3-f2 Ke5-f4 Kf2-e2
7 315 111 17721 Kd5-e5 Kg4-g3 Ra7-a8 Kg3-f2 Ke5-f4 Kf2-e2 Kf4-e5
7 315 113 26791 Kd5-e5 Kg4-g3 Ra7-a8 Kg3-f2 Ke5-f4 Kf2-e2 Kf4-e5
8 305 115 38491 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
8 305 119 55657 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
9 315 121 68788 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
Kf4-f3
9 315 126 90438 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
Kf4-f3
10 300 132 123922 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
Kf4-f3 Kd2-c3
10 300 147 195942 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a8 Ke2-d2
Kf4-f3 Kd2-c3
11 300 154 236716 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-d2
Ra7-a8 Kd2-c3 Kf4-f3
11 300 169 312911 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-d2
Ra7-a8 Kd2-c3 Kf4-f3
12 302 182 377461 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-d2
12 302 208 521784 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-d2
13 311 233 656748 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-d2
Kf4-f3 Ra4-a3 Kf3-f2 Ra3-a2 e3 Kd2-d3 Kf2-f3 Ra2-e2
13 311 277 898668 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-d2
Kf4-f3 Ra4-a3 Kf3-f2 Ra3-a2 e3 Kd2-d3 Kf2-f3 Ra2-e2
14 297 338 1235798 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-d2 Kf4-f3 Kd2-c3
14 297 532 2281711 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-d2 Kf4-f3 Kd2-c3
15 297 638 2827207 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-d2 Ra6-a7 Kd2-c3 Kf4-f3
15 297 881 4163199 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-d2 Ra6-a7 Kd2-c3 Kf4-f3
16 305 1088 5165450 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-f2 Ra6-a7 Kf2-e2 Ra7-a8 Ke2-d2
16 305 1460 7196683 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-f2 Ra6-a7 Kf2-e2 Ra7-a8 Ke2-d2
17 311 1839 9056248 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-d2 Kf4-f3 Ra4-a3 Kf3-f2 Ra3-a2 e3 Kd2-d3 Kf2-f3 Ra2-e2
17 311 2568 12986987 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-d2 Kf4-f3 Ra4-a3 Kf3-f2 Ra3-a2 e3 Kd2-d3 Kf2-f3 Ra2-e2
18 300 2976 15243890 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-f2 Ra6-a7 Kf2-e2 Ra7-a8 Ke2-d2 Kf4-f3 Kd2-c3
18 300 4332 22676598 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-f2 Ra6-a7 Kf2-e2 Ra7-a8 Ke2-d2 Kf4-f3 Kd2-c3
19 267 7762 41456077 Kd5-e5 ?? Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7
Ke2-f2 Ra7-a8 Kf2-e2 Ra8-a6 Ke2-f2 Ra6-a7 Kf2-e2 Ra7-a8 Ke2-d2 Kf4-f3 Kd2-c3
19 268 8264 44064357 Kd5-e5 !!
19 246 9021 48185820 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-f2 Ra6-c6 Ra4xa5 e3 Kf2-e1 Rc6-c1 Ke1-e2 Rc1-c2 Ke2-e1
e2 Ra5-a4 Kf4-f3 Ra4-a3 Kf3-e4 Ra3-a1
19 246 11633 62458077 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-f2 Ra6-c6 Ra4xa5 e3 Kf2-e1 Rc6-c1 Ke1-e2 Rc1-c2 Ke2-e1
e2 Ra5-a4 Kf4-f3 Ra4-a3 Kf3-e4 Ra3-a1
20 247 12865 68858552 Kd5-e5 Kg4-g3 Ra7-a6 Kg3-f2 Ke5-f4 Kf2-e2 Ra6-a7 Ke2-f2
Ra7-a8 Kf2-e2 Ra8-a6 Ke2-f2 Ra6-c6 Ra4xa5 e3 Kf2-e1 Rc6-c1 Ke1-e2 Rc1-c2 Ke2-f1
e2 Kf1-f2 Rc2-d2 Ra5-a4 Kf4-f5 Kf2-e1
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