Author: Dann Corbit
Date: 14:56:12 09/13/01
Many of the good programs fall for Kb3 (which -- apparently -- is not a good
solution). There are a few good programs which never consider that move.
I want to understand why some programs choose Kb3. According to my
understanding, the thing that is wrong with Kb3 is that it is basically a time
waster -- it accomplishes no useful purpose.
What components make a program choose Kb3?
How are some programs able to avoid it?
========================
GLC takes the bait:
========================
>epd 120 \1.epd
>
Game stage: Endgame
Current eval: 2.85
Ply Time Score Nodes Principal Variation
8 0.01 2.99 6084 Be3 Bd6 Kb3 Kb6 Kc3 Ka7 Kd3 Kb6
8 0.02 2.99 10735 Be3 Bd6 Kb3 Kb6 Kc3 Ka7 Kd3 Kb6
9 0.03 2.97 17888 Be3 Bd6 Kb3 Kb6 Kc3 Ka7 Kd3 Kb6 Kc3
9 0.04 2.97 26343 Be3 Bd6 Kb3 Kb6 Kc3 Ka7 Kd3 Kb6 Kc3
10 0.07 2.93 47908 Be3 Bb6 Kb3 Kb8 Bf2 Kc7 Kc3 Kd6 Be3
10 0.13 3.00 99124 Kb3 Bb6 Kc2 Bc7 Be3 Bd6 Kc3 Kb6 <ht>
10 0.16 3.00 118676 Kb3 Bb6 Kc2 Bc7 Be3 Bd6 Kc3 Kb6 <ht>
11 0.19 2.99 145289 Kb3 Bb6 Kc2 Bc7 Be3 Bd6 Kc3 Kb6 Kb3 <ht>
11 0.24 2.99 183682 Kb3 Bb6 Kc2 Bc7 Be3 Bd6 Kc3 Kb6 Kb3 <ht>
12 0.31 2.99 235122 Kb3 Bb6 Kc2 Bc7 Be3 Bd6 Kc3 Kb6 Kb3 <ht>
12 0.43 2.99 334347 Kb3 Bb6 Kc2 Bc7 Be3 Bd6 Kc3 Kb6 Kb3 <ht>
13 0.69 3.07 540943 Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Ke3 Bd6 Bc3 Be7 Kf3
13 0.87 3.07 685673 Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Ke3 Bd6 Bc3 Be7 Kf3
14 1.07 3.07 840191 Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Ke3 Bb6 Bc3 Bd8 Kf3
14 1.69 3.07 1310906 Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Ke3 Bb6 Bc3 Bd8 Kf3
15 2.04 3.07 1596046 Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Kf2 Bd6 Ke3 Bc7 Bc3
Bd8 Kf3
15 3.26 3.07 2554515 Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Kf2 Bd6 Ke3 Bc7 Bc3
Bd8 Kf3
16 4.01 3.07 3143748 Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Kf2 Bd6 Ke3 Bc7 Bc3
Bd8 Kf3
16 7.95 3.07 6132283 Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Kf2 Bd6 Ke3 Bc7 Bc3
Bd8 Kf3
17 9.70 3.07 7503819 Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Kf2 Bd6 Kf3 Bc7 Bc3
Bd8 Ke3 Be7 Kf3
17 18.78 3.07 14303k Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Kf2 Bd6 Kf3 Bc7 Bc3
Bd8 Ke3 Be7 Kf3
18 23.54 3.07 17921k Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Kf2 Bd6 Kf3 Bc7 Bc3
Bd8 Ba1 Be7 Bc3
18 53.86 3.07 39983k Kb3 Bb6 Kc2 Bc7 Kd3 Kb8 Ke2 Ka7 Kf2 Bd6 Kf3 Bc7 Bc3
Bd8 Ba1 Be7 Bc3
local: t=2:00 nps=736192.0 n=88348188 (f=30429184 q=57919004)
total: t=2:00 nps=736192.0 n=88348188 draws=90111
trans: probes=30339072 hits=7838770 (25.84%) draft=5789405 (19.08%)
tcuts: exact=1267 (0.00%) upper=2934261 (9.67%) lower=2237264 (7.37%)
tstor: exact=535 (0.00%) upper=8450469 (60.95%) lower=5414000 (39.05%)
ext: check=5563460 recap=126402 ppush=1019229 1rep=424323 thrt=0
q-moves: gen=20579503 tested=15377939 made/un=7522496 max-dep=9
max eval diff: part-1=5.30 part-2=1.40
!m Ka4-b3 307 16
move a4b3
--------------------------------------------
8/k1b5/P4p2/1Pp2p1p/K1P2P1P/8/3B4/8 w - - acd 16; acn 3226846; acs 6; bm Be3 b6
+; ce 426; id "WAC.100"; pv Kb3 Bb6 Kc3 Bc7 Kd3 Kb8 Bc3 Bd8 Ke3 Ka7 Kf2 Be7 Kf3
Kb6 Ba5+ Ka7 Ke3;
Line 001: Test [Be3 b6+]: failed [Kb3; score=3.07]
========================
YACE takes the bait:
========================
title "WAC.100"
Stored 0 learned positions into hash table
solution Be3 b6+
usetime = 59.00, mintime = 59.00 maxtime = 59.00 tl 59.00 ml 0
6 0.000 0.89 1t 1.b6+ Bxb6 {0}
9 0.001 2.86 1t 1.Kb3 {80}
16 0.001 2.86 1. 1.Kb3 {80}
30 0.001 2.72 2t 1.Kb3 Bb6 {80}
75 0.002 2.72 2. 1.Kb3 Bb6 {80}
129 0.002 2.75 3t 1.Kb3 Bb6 2.Kc3 {80}
265 0.002 2.75 3. 1.Kb3 Bb6 2.Kc3 {80}
364 0.003 2.89 4t 1.Kb3 Bb6 2.Kc3 Bc7 {80}
550 0.003 2.89 4. 1.Kb3 Bb6 2.Kc3 Bc7 {80}
1190 0.005 2.99 5t 1.Kb3 Bb6 2.Kc3 Bc7 3.Kd3 {80}
1590 0.005 2.99 5. 1.Kb3 Bb6 2.Kc3 Bc7 3.Kd3 {80}
2106 0.007 2.93 6t 1.Kb3 Bb6 2.Kc3 Bc7 3.Kc2 Bd8 {80}
2904 0.008 2.93 6. 1.Kb3 Bb6 2.Kc3 Bc7 3.Kc2 Bd8 {80}
4821 0.012 2.87 7t 1.Kb3 Bb6 2.Bc1 Bc7 3.Ba3 Bd6 4.Bc1 {80}
6941 0.016 2.87 7. 1.Kb3 Bb6 2.Bc1 Bc7 3.Ba3 Bd6 4.Bc1 {80}
9741 0.021 2.90 8t 1.Kb3 Bb6 2.Bc1 Bc7 3.Kc2 Bd8 4.Bb2 Bc7 {80}
13251 0.027 2.90 8. 1.Kb3 Bb6 2.Bc1 Bc7 3.Kc2 Bd8 4.Bb2 Bc7 {80}
18357 0.036 2.90 9t 1.Kb3 Bb6 2.Bc1 Bd8 3.Ba3 Be7 4.Kc2 Bd6 5.Kd3
{80}
25251 0.047 2.90 9. 1.Kb3 Bb6 2.Bc1 Bd8 3.Ba3 Be7 4.Kc2 Bd6 5.Kd3
{80}
51559 0.086 2.99 10t 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bf8 5.Bc3
Bg7H {80}
65547 0.108 2.99 10. 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bf8 5.Bc3
Bg7 {80}
90734 0.145 3.03 11t 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bf8 5.Bc3
Bg7 6.Bb2 {80}
114419 0.179 3.03 11. 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bf8 5.Bc3
Bg7 6.Bb2 {80}
159759 0.242 3.05 12t 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bc7 5.Bc3
Bd8 6.Bb2 Be7 {80}
213842 0.321 3.05 12. 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bc7 5.Bc3
Bd8 6.Bb2 Be7 {80}
298968 0.441 3.08 13t 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bc7 5.Bc3
Bd8 6.Bb2 Be7 7.Bc3 {80}
385598 0.563 3.08 13. 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bc7 5.Bc3
Bd8 6.Bb2 Be7 7.Bc3 {80}
522775 0.751 3.09 14t 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bh6 4.Ke3 Bf8 5.Bc3H
Be7H {HT}
676359 0.972 3.09 14. 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bh6 4.Ke3 Bf8 5.Bc3
Be7
860496 1.229 3.09 15t 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Be7 5.Ba5H
Bf8H 6.Bd8H Bg7H {80}
1118323 1.597 3.09 15. 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Be7 5.Ba5
Bf8 6.Bd8 Bg7 {80}
1427600 2.029 3.10 16t 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bc7 5.Bc3
Bd8 6.Kd3 Kb8 7.Ke2 Ka7 8.Ke3H Kb8H {80}
2028322 2.911 3.10 16. 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bc7 5.Bc3
Bd8 6.Kd3 Kb8 7.Ke2 Ka7 8.Ke3 Kb8 {80}
2976012 4.257 3.10 17t 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bc7 5.Bc3
Bd8 6.Kd3 Kb8 7.Ke2 Ka8 8.Kf3 Ka7 9.Ke3H Bb6H
{HT}
4031547 5.959 3.10 17. 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke3 Bc7 5.Bc3
Bd8 6.Kd3 Kb8 7.Ke2 Ka8 8.Kf3 Ka7 9.Ke3 Bb6
6687615 9.848 3.08 18t 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke2 Bc7 5.Bc1
Bd6 6.Ke3 {HT}
8514298 12.565 3.08 18. 1.Kb3 Bd6 2.Kc2 Bf8 3.Kd3 Bd6 4.Ke2 Bc7 5.Bc1
Bd6 6.Ke3
11549678 16.937 3.08 19t 1.Kb3 Bd6 2.Kc2 Bc7 3.Kd3 Bd6 4.Ke2 Bc7H 5.Kd1H
{HT}
13032617 19.118 3.09 19t+ 1.b6+ Bxb6 2.Kb5 Bc7 3.Be3 Kb8
13320084 19.518 3.09 19t 1.b6+ Bxb6 2.Kb5 Bc7H 3.Be3H {HT}
16011674 23.720 3.09 19. 1.b6+ Bxb6 2.Kb5 Bc7 3.Be3
17727881 26.340 3.49 20++ 1.b6+ Bxb6 2.Kb5 Bc7 3.Be3 Kb8 4.Kxc5 Ba5 5.Kc6
Be1 6.c5 Bc3
20824252 31.267 4.41 20t 1.b6+ Bxb6 2.Kb5 Bc7 3.Be3 Kb8 4.Kxc5 Ba5 5.Kd6
Ka8 6.Ke6 Kb8 7.Kxf6 Bd8+ 8.Kxf5 Bxh4 9.Kg6 Be7
10.Kxh5 Bf6 11.a7+ Kb7 12.f5 {240}
26552063 40.563 4.42 20t+ 1.Be3 Bd6 2.Ka5 Bc7+ 3.b6+ Bxb6+ 4.Kb5 Bc7
5.Bxc5+ Ka8 6.Be3 Kb8 7.c5 Kc8
44118942 58.990 4.42 20t 1.Be3 Bd6 2.Ka5 Bc7+ 3.b6+ Bxb6+ 4.Kb5 Bc7
5.Bxc5+ Ka8 6.Be3 Kb8 7.c5 Kc8
44118942 58.991 4.42 20u. 1.Be3 Bd6 2.Ka5 Bc7+ 3.b6+ Bxb6+ 4.Kb5 Bc7
5.Bxc5+ Ka8 6.Be3 Kb8 7.c5 Kc8
44118942 Nodes, 5.26% Leavenodes, 747893 Nodes/sec
8862470 eval, 81.32% score, 135540907 genmoves, 2.14% captures le 667/319
ext: pawn 834188, rcp 222024, chk 12584, repchk 25468, null 11251, prune 55042
htable: 18802100 store, 0 rejected, 36011472 probe, 72.0% f/p, 137.9% f/s
entries 5416665 age 0 renew 0
egtb probes 74, found 74 max_depth 37
ok after 19.12 sec
test_nodes 13032617 l 9
========================
CRAFTY takes the bait:
========================
Crafty v18.11
White(1): st 120
search time set to 120.00.
White(1): epdpfga 1.epd 1.out
PFGA: EPD record: 1 ID: WAC.100
end-game phase
clearing hash tables
time surplus 0.00 time limit 2:00 (2:00)
nss depth time score variation (1)
11 0.17 4.05 1. Be3 Bb6 2. Bf2 Kb8 3. Kb3 Ka7 4.
Kc3 Ba5+ 5. Kd3 Bb4 6. Be3 Kb6
11-> 0.26 4.05 1. Be3 Bb6 2. Bf2 Kb8 3. Kb3 Ka7 4.
Kc3 Ba5+ 5. Kd3 Bb4 6. Be3 Kb6
12 0.33 4.02 1. Be3 Bb6 2. Bf2 Kb8 3. Kb3 Ka7 4.
Kc3 Ba5+ 5. Kd3 Bb4 6. Be3 Kb6 7. Ke2
12-> 0.57 4.02 1. Be3 Bb6 2. Bf2 Kb8 3. Kb3 Ka7 4.
Kc3 Ba5+ 5. Kd3 Bb4 6. Be3 Kb6 7. Ke2
13 0.85 4.06 1. Be3 Bd6 2. Kb3 Kb6 3. Kc3 Bb8 4.
Kd3 Ba7 5. Bd2 Bb8 6. Ke3 Ba7 7. Bc3
13 1.00 4.28 1. Kb3 Bb6 2. Kc3 Bc7 3. Kd3 Kb8 4.
Bc3 Ka7 5. Ke3 Bd8 6. Bb2 Be7 7. Bc3
13-> 1.22 4.28 1. Kb3 Bb6 2. Kc3 Bc7 3. Kd3 Kb8 4.
Bc3 Ka7 5. Ke3 Bd8 6. Bb2 Be7 7. Bc3
14 1.55 4.17 1. Kb3 Bb6 2. Kc3 Bc7 3. Kd3 Kb8 4.
Bc3 Ka7 5. Ke3 Bd8 6. Bb2 Be7 7. Bc3
Bd6
14-> 2.43 4.17 1. Kb3 Bb6 2. Kc3 Bc7 3. Kd3 Kb8 4.
Bc3 Ka7 5. Ke3 Bd8 6. Bb2 Be7 7. Bc3
Bd6
15 2.85 4.26 1. Kb3 Bb6 2. Kc3 Bc7 3. Kd3 Kb8 4.
Bc3 Bd8 5. Ke3 Ka7 <HT>
15-> 4.32 4.26 1. Kb3 Bb6 2. Kc3 Bc7 3. Kd3 Kb8 4.
Bc3 Bd8 5. Ke3 Ka7 <HT>
16 5.07 4.26 1. Kb3 Bb6 2. Kc3 Bc7 3. Kd3 Kb8 4.
Bc3 Bd8 5. Ke3 Ka7 6. Kf2 Be7 7. Kf3
Kb6 8. Ba5+ Ka7 9. Ke3
16-> 9.30 4.26 1. Kb3 Bb6 2. Kc3 Bc7 3. Kd3 Kb8 4.
Bc3 Bd8 5. Ke3 Ka7 6. Kf2 Be7 7. Kf3
Kb6 8. Ba5+ Ka7 9. Ke3
17 15.91 4.28 1. Kb3 Bd6 2. Be3 Kb6 3. Kc3 Bb8 4.
Kd2 Ba7 5. Kd3 Bb8 6. Bd2 Ka7 7. Ke3
Bd6 8. Bc3 Be7 9. Kd3
17-> 26.59 4.28 1. Kb3 Bd6 2. Be3 Kb6 3. Kc3 Bb8 4.
Kd2 Ba7 5. Kd3 Bb8 6. Bd2 Ka7 7. Ke3
Bd6 8. Bc3 Be7 9. Kd3
18 32.47 4.28 1. Kb3 Bd6 2. Be3 Kb6 3. Kc3 Bb8 4.
Kd2 Ba7 5. Kd3 Bb8 6. Bd2 Ka7 7. Ke2
Bc7 8. Kd3 <HT>
18 47.33 4.43 1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4.
Kxc5 Ka7 5. Kc6+ Ka8 6. Kd7 Ba5 7.
a7 Kb7 8. Bf2 Ka8 9. Ke6 Bd2 10. Kxf5
Bc3 11. Bb6 <HT>
18-> 48.98 4.43 1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4.
Kxc5 Ka7 5. Kc6+ Ka8 6. Kd7 Ba5 7.
a7 Kb7 8. Bf2 Ka8 9. Ke6 Bd2 10. Kxf5
Bc3 11. Bb6 <HT>
19 49.76 ++ 1. b6+!!
time=2:00 cpu=99% mat=1 n=83182257 fh=97% nps=691k
ext-> chk=11871005 cap=34151 pp=810585 1rep=1006626 mate=4557
predicted=0 nodes=83182257 evals=4748882
endgame tablebase-> probes done=55 successful=55
========================
ExChess, on the other hand, never goes for Kb3:
========================
Experimental Chess Program (EXchess) version 4.02,
Copyright (C) 1997-2000 Daniel C. Homan, Waltham MA, USA
EXchess comes with ABSOLUTELY NO WARRANTY. This is free
software, and you are welcome to redistribute it under
certain conditions. This program is distributed under the
GNU public license. See the files license.txt and readme.txt
for more information.
Hash size = 1048576 entries, 20971520 bytes
Pawn size = 524288 entries, 10485760 bytes
Type 'help' for a list of commands.
>White-To-Move[1]: post
White-To-Move[1]: testsuite
Enter file name for test suite in EPD format: 1.epd
Enter file name for test results: 1.out
Focus on a game stage? (y/n): n
Interactive run? (y/n): n
Enter search time per move: 120
--------------------*** 1.epd ***--------------------
White to Move Book Move(s): a1
Test Position: 3226846; acs 6; bm Be3 b6+; ce 426; id "WAC.100"; pv Kb3 Bb6 K
c3 Bc7 Kd3 Kb8 Bc3 Bd8 Ke3 Ka7 Kf2 Be7 Kf3 Kb6 Ba5+ Ka7 Ke3
1. 3.19 0 130737 1. Be3
1. 3.19 0 130747 1. Be3
2. 3.00 0 130762 1. Be3 Kb6
2. 3.07 0 130805 1. Kb3 Kb6
2. 3.07 0 130848 1. Kb3 Kb6
3. 3.09 0 130882 1. Kb3 Kb6 2. Kc3
3. 3.09 0 131071 1. Kb3 Kb6 2. Kc3
4. 3.09 0 131139 1. Kb3 Kb6 2. Kc3 Bd6
4. 3.27 0 131436 1. Be3 Kb8 2. Kb3
4. 3.27 0 131439 1. Be3 Kb8 2. Kb3
5. 3.11 0 131959 1. Be3 Bd6 2. Kb3 Kb6 3. Kc3
5. 3.11 0 131972 1. Be3 Bd6 2. Kb3 Kb6 3. Kc3
6. 3.11 0 132083 1. Be3 Bd6 2. Kb3 Kb6 3. Kc3 Bc7
6. 3.11 0 132104 1. Be3 Bd6 2. Kb3 Kb6 3. Kc3 Bc7
7. 3.11 0 132336 1. Be3 Bd6 2. Kb3 Kb6 3. Kc3 Bc7 4. Kd3 Kxa7
7. 3.11 0 132354 1. Be3 Bd6 2. Kb3 Kb6 3. Kc3 Bc7 4. Kd3 Kxa7
8. 3.12 0 134950 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bc7 4. Kd3
8. 3.12 0 134987 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bc7 4. Kd3
9. 3.11 0 135640 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bc7 4. Kd3 Bb8
9. 3.11 0 135659 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bc7 4. Kd3 Bb8
10. 3.11 0 137264 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8
10. 3.11 0 137325 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8
11. 3.11 0 140719 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8
11. 3.11 0 140974 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8
12. 3.11 0 147522 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8
12. 3.11 0 147878 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8
13. 3.12 0 220347 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8 6. Bd2 Bc7 7. Be3
13. 3.12 0 229246 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8 6. Bd2 Bc7 7. Be3
14. 3.12 0 286976 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8 6. Bd2 Bc7 7. Be3 Bd6
14. 3.12 0 303605 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8 6. Bd2 Bc7 7. Be3 Bd6
15. 3.12 0 433372 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8 6. Bd2 Bc7 7. Ke3 Bd6 8. Bc3
15. 3.12 0 462179 1. Be3 Bd6 2. Kb3 Kb6 3. Kc2 Bf8 4. Kc3 Bd6 5. Kd3
Bb8 6. Bd2 Bc7 7. Ke3 Bd6 8. Bc3
16. 3.29 1 880939 1. Be3 Bd6 2. Kb3 Be7 3. Kc3 Bd6 4. Kc2 Be7 5. Bd2
Bd8 6. Kd3 Kb8 7. Be3 Bc7 8. Ke2
16. 3.29 1 921601 1. Be3 Bd6 2. Kb3 Be7 3. Kc3 Bd6 4. Kc2 Be7 5. Bd2
Bd8 6. Kd3 Kb8 7. Be3 Bc7 8. Ke2
17. 3.29 2 1305571 1. Be3 Bd6 2. Kb3 Be7 3. Kc3 Bd6 4. Kc2 Be7 5. Kd3
Bd6 6. Bd2 Bc7 7. Bc1 Ka8 8. Ke3 Kb8 9. Bd2
17. 3.29 2 1395341 1. Be3 Bd6 2. Kb3 Be7 3. Kc3 Bd6 4. Kc2 Be7 5. Kd3
Bd6 6. Bd2 Bc7 7. Bc1 Ka8 8. Ke3 Kb8 9. Bd2
18. 3.29 4 2000479 1. Be3 Bd6 2. Kb3 Be7 3. Kc3 Bd6 4. Kc2 Be7 5. Kd2
Bd6 6. Kd3 Kb6 7. Kc2 Ka7 8. Bd2 Bc7 9. Kd3
18. 3.29 4 2182591 1. Be3 Bd6 2. Kb3 Be7 3. Kc3 Bd6 4. Kc2 Be7 5. Kd2
Bd6 6. Kd3 Kb6 7. Kc2 Ka7 8. Bd2 Bc7 9. Kd3
19. ++ 20 9005929 1. Be3
19. 3.61 66 26557961 1. Be3 Bd6 2. Ka5 Bc7+ 3. b6+ Bxb6+ 4. Kb5 Bc7 5. B
xc5+ Ka8 6. Be3 Kb8 7. c5 Ka8 8. c6 Kb8 9. Kc4 Ka8 10. Kb3 Ba5 11. Kc4
19. 3.61 67 27029553 1. Be3 Bd6 2. Ka5 Bc7+ 3. b6+ Bxb6+ 4. Kb5 Bc7 5. B
xc5+ Ka8 6. Be3 Kb8 7. c5 Ka8 8. c6 Kb8 9. Kc4 Ka8 10. Kb3 Ba5 11. Kc4
20. ++ 90 35750310 1. Be3
node_count = 48659308 quiescent nodes = 1754093 eval_count = 18315540
hash hits = 13712838 hash moves = 1967414 pawn hash hits = 17919025
node_rate = 405494 null cuts = 2925847 exten = 4968899 int_iter = 19
egtb_probes = 9290 egtb_hits = 9290 fail_high(%) = 91
Searched Move: Be3
Right = 0/1 Stime = -1 Total NPS = 394639 <depth> = 19
No more test positions.
White-To-Move[1]:
========================
PEPITO doesn't either:
========================
Pepito> epd
Introduzca fichero a cargar:
> 1.epd
Tiempo por problema (segs) ? 120
CONTROL_IN 20000
No pude leer jugada.
+----+----+----+----+----+----+----+----+
8 | | | | | | | | |
+----+----+----+----+----+----+----+----+
7 | *R | | *A | | | | | |
+----+----+----+----+----+----+----+----+
6 | P | | | | | *P | | |
+----+----+----+----+----+----+----+----+
5 | | P | *P | | | *P | | *P |
+----+----+----+----+----+----+----+----+
4 | R | | P | | | P | | P |
+----+----+----+----+----+----+----+----+
3 | | | | | | | | |
+----+----+----+----+----+----+----+----+
2 | | | | A | | | | |
+----+----+----+----+----+----+----+----+
1 | | | | | | | | |
+----+----+----+----+----+----+----+----+
a b c d e f g h
Fase: Final
1 105 13 7 b6 Ra7xb6
1 377 13 12 Ad2-e3
1 377 13 19 Ad2-e3
2 365 13 71 Ad2-e3 Ra7-b8
3 374 13 241 Ra4-b3 Ra7-b6 Ad2-e3
3 374 13 318 Ra4-b3 Ra7-b6 Ad2-e3
4 369 13 927 Ra4-b3 Ac7-b8 Rb3-c3 Ra7-b6
5 379 14 2084 Ra4-b3 Ra7-a8
6 372 14 4767 Ra4-b3 Ac7-d6 Rb3-c3
7 380 15 9865 Ra4-b3 Ac7-b8 Rb3-c3 Ra7-b6
8 380 16 18570 Ra4-b3 Ac7-d6 Rb3-c2 Ra7-b6
9 379 18 30416 Ra4-b3 Ac7-d6 Rb3-c2 Ra7-b6 Ad2-e3
10 375 21 47087 Ra4-b3 Ac7-d6 Rb3-c2 Ra7-b6 Ad2-e3 Ad6-b8 Rc2-d3 Rb6-a5
Ae3-d2
11 381 30 112618 Ra4-b3 Ac7-b8
12 381 37 163417 Ra4-b3 Ac7-b8 Rb3-c3 Ra7-b6 Rc3-d3 Ab8-d6 Rd3-e3 Rb6-a7
Ad2-e1 Ad6-e7 Ae1-c3 Ra7-b6
13 382 50 250369 Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Ad2-e3 Ra7-b6
Rd3-c2 Ad6-b8
14 382 71 395980 Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Ad2-e3 Ra7-b6
Rd3-c2 Ad6-b8
15 382 106 642500 Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Ad2-e3 Ra7-b6
Rd3-c2 Ad6-b8
16 382 158 1001499 Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Rd3-e3 Ad6-c7
Ad2-c3
17 388 273 1815095 Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Rd3-e3 Ad6-c7
Ad2-c3 Ac7-d8 Re3-e2 Ad8-c7 Re2-f3 Ac7-d8 Rf3-e3 Ad8-e7 Ac3-b2
18 388 433 2893462 Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Rd3-e3 Ad6-c7
Ad2-c3 Ac7-d8 Re3-e2
19 388 689 4673904 Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Rd3-e3 Ad6-c7
Ad2-e1 Ac7-d8 Ae1-c3
20 388 1381 9301470 Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Rd3-e3 Ad6-c7
Ad2-e1 Ac7-d8 Ae1-c3 Ra7-b8 Re3-d3
21 388 2581 17593589 Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Rd3-e3 Ad6-c7
Ad2-e1 Ac7-d8 Ae1-c3 Ra7-b8 Re3-d3
22 388 5049 34706530 Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Rd3-e3 Ad6-c7
Ad2-e1 Ac7-d8 Ae1-c3 Ra7-b8 Re3-d3
Time spent: 120.00
Depth reached: 22.333
PV: [388] Ra4-b3 Ac7-b8 Rb3-c3 Ab8-c7 Rc3-d3 Ac7-d6 Rd3-e3 Ad6-c7 Ad2-e1 Ac7-d8
Ae1-c3 Ra7-b8 Re3-d3
Nodes per second: 648666.67500000
Interior nodes: 31614803
Quiescent nodes: 46225198
First_success: 9220643/10305659 (89.472 %).
BranchingFactor: 2.095
Null-moves: 5875274/8286258 (70.904 %).
Hash hits: 15784294/31614803 (49.927 %).
EGTB hits: 1699/1699 (100.000 %).
Pawn Hash hits: 46088410/46224223 (99.706 %).
Futility cut-offs: 3492408.
IID: 0.
Evals: 46225207. Lazy: 29494738. (63.807 %)
Extensions: CHK 6208116. MRL 426571. RCP 1705465.
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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