Author: Dann Corbit
Date: 18:58:03 11/26/01
Go up one level in this thread
Here is Beowulf's take on those three positions:
Position 1 - White to play
--------------------------
ID =
FEN = 7k/pppp4/8/8/8/8/P1PP4/7K w - -
. . . . . . . k
p p p p . . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
P . P P . . . .
. . . . . . . K
Current Position = -1.20
Number of Possible Moves = 9
11 -131 63 159205 c2c4 d7d6 h1g2 a7a6 g2f3 b7b5 f3e4 b5c4 e4d5
a6a5 d5c4
11 -130 86 220055 d2d4 d7d5 c2c3 c7c6 h1g2 b7b6 g2f3 a7a6 a2a4
h8g8
12 -130 163 411900 d2d4 d7d5 h1g2 c7c6 g2f3 h8g7 f3e3 g7f7 e3d3
f7e6 c2c4 d5c4 d3c4
13 -132 290 726843 d2d4 d7d5 h1g2 c7c6 g2f3 h8g7 f3e3 g7f7 e3d3
f7e6 c2c3 e6d6 a2a4
13 -131 475 1226744 h1g2 d7d5 c2c3 c7c6 g2f3 h8g7 f3e3 g7f6 e3d4
f6e6 d2d3 e6d6 a2a4
14 -132 753 2008250 h1g2 d7d5 c2c3 c7c6 g2f3 h8g7 f3e3 g7f6 d2d4
f6e6 a2a4 e6d6 e3d3 a7a6
15 -132 2717 7419473 h1g2 d7d5 c2c3 h8g8 g2f3 g8f7 f3e3 f7e6 d2d3
e6d6 d3d4 d6e6 a2a4 c7c6 e3d3 a7a6
16 -133 5014 13464361 h1g2 d7d5 c2c3 h8g8 g2f3 g8f7 f3e3 f7e6 d2d3
c7c6 e3d4 b7b6 d4e3 a7a5
16 -133 6000 16098635 h1g2 d7d5 c2c3 h8g8 g2f3 g8f7 f3e3 f7e6 d2d3
c7c6 e3d4 b7b6 d4e3 a7a5
Search Time : 60.00 Seconds
Total Nodes Searched : 16098635 (53.0% Qui)
Total Nodes Evaluated : 8536098
Cuts : Delta 9273 : SEE 3245 : Mate 0
: Razor 336507 : Eval 2262054
Extensions : Check 114677 : OneRep 106 : CMThreat 440
: Pawn 54674 : Recap 106410 : RevCheck 2852
Hash Stores (Size) : 2154039 (5592373)
Hash Probes (Hits) : 15441712 (7775212)
EGTB Probes (Hits) : 5236 (5236)
Move Ordering : 76.6%
Best Move = h1g2
--Answer: Kg2 ** Correct **
Time To Solution = 4.75 sec
Correct So Far : 1/1
Position 2 - White to play
--------------------------
ID =
FEN = 7k/pppp4/8/8/8/5K2/P1PP4/8 w - -
. . . . . . . k
p p p p . . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
. . . . . K . .
P . P P . . . .
. . . . . . . .
Current Position = -1.20
Number of Possible Moves = 14
10 -110 71 205678 f3e4 h8g7 d2d4 c7c6 c2c4 d7d6 a2a3 g7f8 d4d5
11 -110 137 395154 f3e4 h8g7 d2d4 d7d6 c2c4 g7f6 d4d5 f6e7 e4d4
a7a6 a2a4
12 -113 277 803973 f3e4 h8g7 d2d4 d7d6 c2c4 g7f6 d4d5 f6e7 e4d4
a7a6 a2a4 e7d7 a4a5
13 -113 620 1704412 f3e4 h8g7 d2d4 d7d6 c2c4 g7f6 d4d5 f6e7 e4d4
a7a6 a2a4 c7c5 d4e4 b7b6
14 -116 1908 5043779 f3e4 h8g7 e4f5 g7f8 d2d4 c7c6 d4d5 c6d5 c2c3
a7a6 f5e5 b7b6 e5d5 f8e7
Search Time : 60.00 Seconds
Total Nodes Searched : 15504845 (53.0% Qui)
Total Nodes Evaluated : 8224450
Cuts : Delta 7968 : SEE 3737 : Mate 0
: Razor 256496 : Eval 1696500
Extensions : Check 289528 : OneRep 572 : CMThreat 322
: Pawn 33035 : Recap 91163 : RevCheck 721
Hash Stores (Size) : 2200297 (5592373)
Hash Probes (Hits) : 14889085 (7812002)
EGTB Probes (Hits) : 8351 (8351)
Move Ordering : 78.2%
Best Move = f3e4
--Answer: Ke4 ** Correct **
Time To Solution = 0.38 sec
Correct So Far : 2/2
Position 3 - White to play
--------------------------
ID =
FEN = 7k/pppp4/5K2/8/8/8/P1PP4/8 w - -
. . . . . . . k
p p p p . . . .
. . . . . K . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
P . P P . . . .
. . . . . . . .
Current Position = -1.20
Number of Possible Moves = 12
10 -22 41 120699 c2c4 c7c6 c4c5 b7b6 f6e7 b6c5 e7d7 c5c4 d7c6
a7a5
11 1 91 246575 c2c4 d7d6 f6e7 a7a6 e7d7 b7b5 d2d3 b5c4 d3c4
a6a5 d7c7
11 7! 154 424422 d2d4 h8g8 f6e7 d7d6 e7d7 b7b5 d7c7 g8h7
11 15 164 448178 d2d4 b7b6 d4d5 d7d6 f6e6 h8g7 e6d7 g7f6 d7c7
f6e5 c2c4
12 44! 212 598440 d2d4 d7d6 f6e6 h8g8 e6d7 c7c6 d7d6 a7a5 d6c7
c6c5 d4c5 a5a4
12 108 234 648169 d2d4 d7d6 f6e6 d6d5 e6d7 c7c6 d7c7 a7a6 c7b7
a6a5 b7c6 h8g8 c6d5
12 127 301 817877 f6e7 d7d5 e7d7 c7c6 d7c7 c6c5 c7b7 a7a5 b7b6
c5c4 b6a5 d5d4
13 148 385 1057196 f6e7 d7d5 e7d7 c7c6 d7c7 h8g8 c7b7 g8f7 a2a4
d5d4 b7a7 c6c5 a7b6
14 177! 534 1489278 f6e7 b7b6 e7d7 h8g8 d7c7 g8g7 c7c6 g7f7 d2d3
f7e6 c6b5 e6d5 a2a4
14 206 1400 3724832 f6e7 d7d5 e7d7 c7c6 d2d4 h8g7 d7c7 g7f6 c7b7
f6f5 b7c6 f5e4 c2c3 a7a5
15 213 1850 4911710 f6e7 d7d5 e7d7 c7c6 d7c7 b7b6 c7c6 d5d4 c6d5
h8g8 d5d4 g8f7 d4d5 a7a6 d5c6 a6a5 c6b6 a5a
4 d2d3 f7e6 c2c4 e6d6
16 239 3664 9586186 f6e7 d7d6 e7d7 c7c5 d7d6 h8g7 d6c5 g7f8 d2d4
f8e8 d4d5 e8d7 d5d6 b7b6 c5d5 a7a6 c2c4 a6a
5
16 239 6000 15609272 f6e7 d7d6 e7d7 c7c5 d7d6 h8g7 d6c5 g7f8 d2d4
f8e8 d4d5 e8d7 d5d6 b7b6 c5d5 a7a6 c2c4 a6a
5
Search Time : 60.00 Seconds
Total Nodes Searched : 15609272 (56.8% Qui)
Total Nodes Evaluated : 8873628
Cuts : Delta 24460 : SEE 1934 : Mate 0
: Razor 681993 : Eval 4202023
Extensions : Check 104843 : OneRep 750 : CMThreat 4696
: Pawn 42857 : Recap 72320 : RevCheck 1387
Hash Stores (Size) : 1723737 (5592373)
Hash Probes (Hits) : 13390488 (8182739)
EGTB Probes (Hits) : 20793 (20793)
Move Ordering : 79.0%
Best Move = f6e7
interesting that Yace liked c4 a lot better. I wonder if Beowulf made a boo-boo
here... Seems to me like Ke7 wins 2 pawns -- same as c4, and holds back the
enemy king a bit better.
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