Author: Mike Byrne
Date: 08:30:06 02/16/03
Go up one level in this thread
On February 16, 2003 at 07:20:14, Art Basham wrote:
>This one is a real gem!
>AS far as I know,
>
>1. Kf8 is the only move that leads to a mate in 6...!
>
>[D]6K1/6B1/3pNNk1/8/4P3/8/8/8 w - - 0 1
>
>My Fritz 7 finds it for awhiile ..but then changes to Bh8...
>
>I wonder if there is a program that finds Kf8 and stays there
>long enough to force the mate in 6....:-)
>
>Art
If i turn off the egtb - Crafty 19.03 takes 16 seconds, with EGTB takes 20
seconds - but it also finds a mate-in-13 instantly.
White(1): 6K1/6B1/3pNNk1/8/4P3/8/8/8 w - - 0 1
White(1): st 60000
search time set to 60000.00.
White(1): go
end-game phase
time surplus 0.00 time limit 1000:00 (1000:00)
depth time score variation (1)
3-> 0.00 13.15 1. Kf8 d5 2. exd5
4 0.00 13.15 1. Kf8 d5 2. Nf4+ Kg5 3. Ne6+ Kh4 4.
exd5
4-> 0.02 13.15 1. Kf8 d5 2. Nf4+ Kg5 3. Ne6+ Kh4 4.
exd5
5 0.02 13.37 1. Kf8 d5 2. exd5 Kf5 3. Ke7
5-> 0.04 13.37 1. Kf8 d5 2. exd5 Kf5 3. Ke7
6 0.04 13.26 1. Kf8 d5 2. Nf4+ Kg5 3. exd5 Kf5 4.
d6
6-> 0.07 13.26 1. Kf8 d5 2. Nf4+ Kg5 3. exd5 Kf5 4.
d6 (s=13)
7 0.07 ++ 1. Kf8!!
7 0.08 18.32 1. Kf8 d5 2. exd5 Kf5 3. Ng8 Ke4 4.
d6 (s=12)
7-> 0.13 18.32 1. Kf8 d5 2. exd5 Kf5 3. Ng8 Ke4 4.
d6 (s=9)
8 0.13 ++ 1. Kf8!!
8 0.14 19.91 1. Kf8 d5 2. exd5 Kf5 3. Ke7 Ke5 4.
d6 Kf5 (s=8)
8-> 0.35 19.91 1. Kf8 d5 2. exd5 Kf5 3. Ke7 Ke5 4.
d6 Kf5 (s=14)
9 0.35 ++ 1. Kf8!!
9 0.41 20.88 1. Kf8 d5 2. exd5 Kf5 3. Ke7 Ke5 4.
d6 Kf5 5. d7 (s=13)
9-> 1.10 20.88 1. Kf8 d5 2. exd5 Kf5 3. Ke7 Ke5 4.
d6 Kf5 5. d7 (s=12)
10 1.29 20.68 1. Kf8 d5 2. exd5 Kf5 3. Ke7 Ke5 4.
d6 Kf5 5. d7 Ke5 (s=11)
10-> 3.66 20.68 1. Kf8 d5 2. exd5 Kf5 3. Ke7 Ke5 4.
d6 Kf5 5. d7 Ke5 (s=11)
11 4.25 20.68 1. Kf8 d5 2. exd5 Kf5 3. Kf7 Ke5 4.
Ke7 Kf5 5. d6 Ke5 6. d7 (s=10)
11-> 10.91 20.68 1. Kf8 d5 2. exd5 Kf5 3. Kf7 Ke5 4.
Ke7 Kf5 5. d6 Ke5 6. d7 (s=10)
12 10.94 ++ 1. Kf8!!
12 16.50 Mat06 1. Kf8 d5 2. exd5 Kf5 3. Kf7 Ke5 4.
Kg6 Kd6 5. Bh6 Ke5 6. Bf4# (s=9)
12-> 1:08 Mat06 1. Kf8 d5 2. exd5 Kf5 3. Kf7 Ke5 4.
Kg6 Kd6 5. Bh6 Ke5 6. Bf4# (s=9)
time=1:08 cpu=198% mat=9 n=106466620 fh=99% nps=1559k
ext-> chk=4633625 cap=43544 pp=214897 1rep=18001 mate=0
predicted=0 nodes=106466620 evals=56446037
endgame tablebase-> probes done=0 successful=0
SMP-> split=1004 stop=10 data=7/32 cpu=2:15 elap=1:08
mate in 6 moves.
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