Author: Robert Hyatt
Date: 11:09:18 03/02/06
Go up one level in this thread
On March 02, 2006 at 12:02:16, Charles Roberson wrote:
>
> But what happens when you step through the game???
> I took insufficient material tests out of the interior nodes
> and it found the mate in analysis mode.
>
> BUT !!!!
> When I then had it play both sides of the remaining plies,
> it announced draw as soon as it (as black) took the queen with the bishop.
>
> Sort of hate to see the mate then draw in move makeing.
This:
White(1): 1r5k/4NP1b/7K/8/6R1/8/8/8 w - - 0 1
White(1): move
clearing hash tables
time surplus 0.00 time limit 22.50 (+0.00) (3:30)
depth time score variation (1)
1 0.00 4.60 1. Rg7
1-> 0.00 4.60 1. Rg7
2 0.00 4.24 1. Rg7 Be4
2 0.00 +1 1. Rg8+!!
2 0.00 +3 1. Rg8+!!
2 0.00 +M 1. Rg8+!!
2 0.00 Mat03 1. Rg8+ Rxg8 2. fxg8=Q+ Bxg8 3. Ng6#
2-> 0.00 Mat03 1. Rg8+ Rxg8 2. fxg8=Q+ Bxg8 3. Ng6#
3 0.00 Mat03 1. Rg8+ Rxg8 2. fxg8=Q+ Bxg8 3. Ng6#
3-> 0.00 Mat03 1. Rg8+ Rxg8 2. fxg8=Q+ Bxg8 3. Ng6#
4 0.01 Mat03 1. Rg8+ Rxg8 2. fxg8=Q+ <EGTB>
4-> 0.03 Mat03 1. Rg8+ Rxg8 2. fxg8=Q+ <EGTB>
5 0.04 Mat03 1. Rg8+ Rxg8 2. fxg8=Q+ <EGTB>
5-> 0.05 Mat03 1. Rg8+ Rxg8 2. fxg8=Q+ <EGTB>
time=0.05 mat=1 n=3803 fh=98% nps=1.00M
ext-> chk=299 1rep=103 mate=2
predicted=0 nodes=3803 evals=2261 50move=0
endgame tablebase-> probes=11 hits=11
SMP-> split=0 stop=0 data=0/64 elap=0.05
mate in 3 moves.
White(1): Rg8+
time used: 0.05
Black(1): Rg8
Black(1): Rg8
time used: 6.94
time surplus 29.95 time limit 22.87 (+0.00) (3:33) [easy move]
depth time score variation (1)
1 0.00 2.62 2. Nxg8
1 0.00 Mat02 2. fxg8=Q+ <EGTB>
1-> 0.00 Mat02 2. fxg8=Q+ <EGTB>
2 0.00 Mat02 2. fxg8=Q+ <EGTB>
2-> 0.01 Mat02 2. fxg8=Q+ <EGTB>
3 0.01 Mat02 2. fxg8=Q+ <EGTB>
3-> 0.01 Mat02 2. fxg8=Q+ <EGTB>
4 0.01 Mat02 2. fxg8=Q+ <EGTB>
4-> 0.01 Mat02 2. fxg8=Q+ <EGTB>
time=0.01 mat=-4 n=166 fh=100% nps=1.00M
ext-> chk=12 1rep=0 mate=0
predicted=0 nodes=166 evals=27 50move=0
endgame tablebase-> probes=0 hits=0
SMP-> split=0 stop=0 data=0/64 elap=0.01
mate in 2 moves.
White(2): fxg8=Q+
time used: 0.01
Black(2): Bg8
time used: 11.41
time surplus 59.94 time limit 23.27 (+0.00) (3:37) [easy move]
depth time score variation (1)
1 0.00 Mate 3. Ng6#
1-> 0.00 Mate 3. Ng6#
2 0.01 Mate 3. Ng6# <EGTB>
2-> 0.01 Mate 3. Ng6# <EGTB>
3 0.01 Mate 3. Ng6# <EGTB>
3-> 0.01 Mate 3. Ng6# <EGTB>
4 0.01 Mate 3. Ng6# <EGTB>
4-> 0.01 Mate 3. Ng6# <EGTB>
time=0.01 mat=0 n=6 fh=100% nps=1.00M
ext-> chk=4 1rep=0 mate=0
predicted=0 nodes=6 evals=1 50move=0
endgame tablebase-> probes=1 hits=1
SMP-> split=0 stop=0 data=0/64 elap=0.01
White(3): Ng6#
1-0 {White mates}
time used: 0.01
I only call something a draw if the search returns a draw score. I then have
some code to discover why it is a draw (insufficient material, etc) but I don't
use that here at all...
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