Author: William Bryant
Date: 15:24:40 02/24/99
Go up one level in this thread
On February 24, 1999 at 04:48:50, Ulrich Tuerke wrote:
>
>On February 24, 1999 at 04:36:47, Ulrich Tuerke wrote:
>
>I use the 2 positions below to test correct work of my hash algos. You need
>correctly working hash to solve this. May be they are useful for you.
>
>8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - 0 1 id "HASH-01";c0 "Only Kb1! wins";
>8/1p5k/1P1p4/3p4/3Pp2p/2K1P2p/7P/8 w - - 0 1 id "HASH-02";c0 "Kb2! draws";
I tried these on my program. I get Kb1 on ply 19 at 0:19 with a score of
+2.04. On lower plies it chooses Kb2.
On the second I get Kb2 in less than a second, at ply 13.
I assume that as long at it
finds the score when deep enough then the hash tables are ok.
Note, I haven't added Null moves or search extensions yet to this is simple
alpha beta with hash table.
William
wbryant@ix.netcom.com
Analysis below
New Board Position
8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - 0 0
Move 1 W>>
PLY NODES TIME SCORE PV
____________________________________________
5 276 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4
6 515 0:00 +1.10 Kb2 Kb6 Kc3 Kc7 Kc4 Kd7
7 908 0:00 +1.10 Kb2 Kb6 Kc3 Kc7 Kc4 Kd7 Kd3
8 1275 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7
9 1700 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc4
10 3066 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc4 Kb6
11 4070 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc4 Kb6
12 5562 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc4 Kb6
13 6866 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc4 Kb6
14 8957 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc4 Kb6
15 11896 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc4 Kb6
16 17419 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc4 Kb6
17 28024 0:00 +1.20 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc4 Kb6
18 443776 0:05 +1.20 Kb2 Kb8 Kc3 Kb7 Kc4
19 1637536 0:19 +1.20 Kb2 Ka8 Kb3 Ka7 Kc4 Kb6 Kd3
19 1788261 0:21 +2.04 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Ke7
20 2307006 0:28 +1.98 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Ke7 Kc3 Kf6 Kc4 Kg6
Kb5 Kh5 Kxa5 Kg4 Kb5 Kxf4 Kc6 Ke4 Kxd6 Kxd4
21 3132525 0:38 +2.18 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Ke7 Kc3 Kf6 Kc4 Kg6
Kb5 Kh5 Kc6 Kg4 Kxd6 Kxf4 Kc5 Ke4 d6
22 8641031 1:41 +1.98 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Ke7 Kc3 Kf6 Kc4 Kg6
Kb5 Kh5 Kxa5 Kg4 Kb5 Kxf4 Kc6 Ke4 Kxd6 Kxd4
----- Search Stopped -----
Total Search Time: 2:00
Move: Kb1
New Board Position
8/1p5k/1P1p4/3p4/3Pp2p/2K1P2p/7P/8 w - - 0 0
Move 1 W>>
PLY NODES TIME SCORE PV
____________________________________________
5 357 0:00 -1.73 Kb4 Kg6 Kb5 Kf5 Kb4
6 752 0:00 -1.73 Kb4 Kg6 Kb5 Kf5 Kb4 Ke6
7 1160 0:00 -1.73 Kb4 Kg6 Kb5 Kf5 Kb4 Ke6 Kb5
8 1726 0:00 -1.73 Kb4 Kg6 Kb5 Kf5 Kb4 Ke6 Kb5 Kf5
9 2450 0:00 -1.73 Kb4 Kg6 Kb5 Kf5 Kb4 Ke6 Kb5 Kf5 Kb4
10 3144 0:00 -1.73 Kb4 Kg6 Kb5 Kf5 Kb4 Ke6 Kb5 Kf5 Kb4
11 5790 0:00 -1.73 Kb4 Kg6 Kc3 Kf5 Kd2 Ke6 Kc3 Kf5 Kd2 Ke6 Kc3
12 7232 0:00 -1.73 Kb4 Kg6 Kc3 Kf5 Kd2 Ke6 Kc3 Kf5 Kd2
13 29040 0:00 -2.61 Kb4 Kg6 Kc3 Kg5 Kd2 Kf5 Ke2 Ke6 Kd2 Kd7 Kc3 Kc6
Kb4 Kxb6
13 37821 0:00 -1.73 Kb2 Kg6 Kc1 Kf5
14 48847 0:00 -1.73 Kb2 Kg6 Kc1 Kf5 Kd2 Ke6 Kc3 Kf5 Kd2
15 77653 0:01 -1.73 Kb2 Kg6 Kc1 Kf5 Kd2 Ke6 Kc3 Kf5 Kd2
16 114474 0:01 -1.73 Kb2 Kg6 Kc1 Kf5 Kd2 Ke6 Kc3 Kf5 Kd2
17 234182 0:03 -1.73 Kb2 Kg6 Kc1 Kf5 Kd2 Ke6 Kc3 Kf5 Kd2 Ke6
18 452600 0:05 -1.73 Kb2 Kg6 Kc1 Kf5 Kd2 Ke6 Kc3 Kf5 Kd2 Ke6
19 1099743 0:13 -1.73 Kb2 Kg6 Kc1 Kf5 Kd2 Ke6 Kc3 Kf5 Kd2 Ke6
20 2780838 0:35 -1.73 Kb2 Kg6 Kc1 Kf5 Kd2 Ke6 Kc3 Kf5 Kd2 Ke6
----- Search Stopped -----
Total Search Time: 1:12
Move: Kb2
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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