Author: robert flesher
Date: 07:43:32 02/06/04
Go up one level in this thread
Ok here it is Nf8 Loses on the spot yet Ruffian 2.0 or Leiden can't see this. Ruffian 1.01 or Ruffian 1.05 don't have this problem. Any other engine sees this with ease. It has been explained to me that this has something to do with Null Move search in the endgame. All i can say is this is a VERY common endgame position that will occur ALL the time and it will hugely effect Ruffians results if it cannot play the simple endgame positions correctly. Very disappointing that the author did not test simple engames such as this. More beta testing/testers may be needed IMHO. Cheers~ New game [D]1k6/1P5n/2K5/8/8/3B4/8/8 b - - 0 1 Analysis by Ruffian Leiden2003: 1...Nf8 = (0.00) Depth: 1/1 00:00:00 1...Nf8 2.Bb1 = (0.00) Depth: 2/4 00:00:00 1...Nf8 2.Bb1 Ne6 = (0.00) Depth: 3/4 00:00:00 1...Nf8 2.Bb1 Ne6 3.Ba2 = (0.00) Depth: 4/4 00:00:00 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 = (0.00) Depth: 5/7 00:00:00 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 6/8 00:00:00 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 7/10 00:00:01 1kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 8/12 00:00:01 2kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 9/13 00:00:01 2kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 10/13 00:00:01 4kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 11/13 00:00:01 7kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 12/13 00:00:01 11kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 13/14 00:00:02 15kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 14/14 00:00:02 22kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 15/15 00:00:02 29kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 16/15 00:00:02 42kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 17/17 00:00:02 54kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 18/17 00:00:03 71kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 19/18 00:00:03 95kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 20/20 00:00:03 121kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 21/21 00:00:03 158kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 22/22 00:00:03 200kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 23/24 00:00:04 261kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 24/26 00:00:04 339kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 25/28 00:00:04 435kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 26/30 00:00:04 551kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 27/30 00:00:04 688kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 28/34 00:00:05 870kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 29/36 00:00:06 1099kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 30/36 00:00:07 1371kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 31/38 00:00:07 1686kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 32/38 00:00:08 2048kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 33/38 00:00:09 2498kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 34/40 00:00:10 3010kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 35/40 00:00:10 3607kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 36/42 00:00:11 4731kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 37/42 00:00:12 5598kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 38/44 00:00:13 6637kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 39/44 00:00:13 7771kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 40/44 00:00:14 9229kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 41/44 00:00:16 12177kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 42/46 00:00:20 14209kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 43/46 00:00:24 17480kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 44/46 00:00:30 20993kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 45/46 00:00:36 24755kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 46/46 00:00:41 28731kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 47/46 00:00:50 34727kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 48/46 00:00:59 41136kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 49/46 00:01:16 52102kN (, MyTown 06.02.2004) New game 1k6/1P5n/2K5/8/8/3B4/8/8 b - - 0 1 Analysis by Ruffian 2.0.0: 1...Nf8 = (0.00) Depth: 1/1 00:00:00 1...Nf8 2.Bb1 = (0.00) Depth: 2/4 00:00:00 1...Nf8 2.Bb1 Ne6 = (0.00) Depth: 3/4 00:00:00 1...Nf8 2.Bb1 Ne6 3.Ba2 = (0.00) Depth: 4/4 00:00:00 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 = (0.00) Depth: 5/7 00:00:00 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 6/8 00:00:00 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 7/10 00:00:01 1kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 8/12 00:00:01 2kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 9/13 00:00:01 2kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 10/13 00:00:01 4kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 11/13 00:00:01 7kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 12/13 00:00:02 11kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 13/14 00:00:02 15kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 14/14 00:00:02 22kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 15/15 00:00:02 29kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 16/15 00:00:02 42kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 17/17 00:00:02 54kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 18/17 00:00:03 71kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 19/18 00:00:03 95kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 20/20 00:00:03 121kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 21/21 00:00:03 158kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 22/22 00:00:03 200kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 23/24 00:00:04 261kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 24/26 00:00:04 339kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 25/28 00:00:04 435kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 26/30 00:00:04 551kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 27/30 00:00:04 688kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 28/34 00:00:05 870kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 29/36 00:00:05 1099kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 30/36 00:00:06 1371kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 31/38 00:00:07 1686kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 32/38 00:00:07 2048kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 33/38 00:00:08 2498kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 34/40 00:00:09 3010kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 35/40 00:00:10 3607kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 36/42 00:00:10 4731kN 1...Nf8 2.Bb1 Ne6 3.Ba2 Nf8 4.Bb1 = (0.00) Depth: 37/42 00:00:11 5598kN (, MyTown 06.02.2004) New game 1k6/1P5n/2K5/8/8/3B4/8/8 b - - 0 1 Analysis by Hiarcs 9: 1...Ng5 ± (1.36) Depth: 1/2 00:00:00 1...Ng5 2.Bf5 ± (1.23) Depth: 2/3 00:00:00 1...Nf6 ± (1.22) Depth: 2/3 00:00:00 1...Nf6 2.Bf5 ± (1.22) Depth: 2/3 00:00:00 1...Nf6 2.Bf5 Nd5 ± (1.28) Depth: 3/6 00:00:00 1...Ng5 2.Bf5 ± (1.27) Depth: 3/6 00:00:00 1...Ng5 2.Bf5 Nf3 ± (1.26) Depth: 3/6 00:00:00 1...Ng5 2.Bf5 Nf3 3.Kb6 ± (1.13) Depth: 4/9 00:00:00 1...Nf6 2.Bf5 Nd5 ± (1.12) Depth: 4/9 00:00:00 1...Nf6 2.Bf5 Nd5 3.Be4 ± (1.09) Depth: 4/9 00:00:00 1...Nf6 2.Bf5 Nd5 3.Be6 Nf4 ± (1.11) Depth: 5/9 00:00:00 1kN, tb=6 1...Ng5 2.Bf5 Nf3 3.Kb6 ± (1.09) Depth: 5/9 00:00:00 1kN, tb=13 1...Ng5 2.Bc4 Nf3 3.Kb6 Ne5 ± (1.04) Depth: 5/9 00:00:01 2kN, tb=13 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kb5 Nd3 ± (1.10) Depth: 6/12 00:00:01 3kN, tb=18 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kc5 Nd3+ 5.Kd6 Nb4 ± (1.13) Depth: 7/13 00:00:01 5kN, tb=61 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kc5 Nd7+ 5.Kb5 Nf6 6.Bf3 ± (1.00) Depth: 8/17 00:00:01 9kN, tb=247 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kc5 Nd7+ 5.Kb5 Nf6 6.Bf3 ± (0.75) Depth: 9/17 00:00:01 14kN, tb=389 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kc5 Nf7 5.Bxf7 = (0.04) Depth: 9/18 00:00:01 21kN, tb=443 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kc5 Nf7 5.Bxf7 = (0.04) Depth: 10/20 00:00:01 30kN, tb=569 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kc5 Nf7 5.Bxf7 = (0.04) Depth: 11/21 00:00:02 44kN, tb=820 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kc5 Nf7 5.Bxf7 = (0.04) Depth: 12/21 00:00:02 61kN, tb=1230 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kc5 Nf7 5.Bxf7 = (0.04) Depth: 13/24 00:00:02 102kN, tb=2098 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kc5 Nd3+ 5.Kd6 Nb2 6.Kc6 Nd3 7.Kb5 Nf4 = (0.02) Depth: 14/24 00:00:02 171kN, tb=3442 1...Ng5 2.Bc4 Nf3 3.Bd5 Ne5+ 4.Kc5 Nd3+ 5.Kd6 Nb2 6.Kc6 Nd3 7.Kb5 Nf4 8.Bf3 Ne6 9.Kb4 Nd8 10.Be4 Nxb7 = (0.00) Depth: 15/26 00:00:03 223kN, tb=4212 1...Ng5 2.Bc4 Nf3 3.Bd5 Nd4+ 4.Kc5 Nf5 5.Bf3 Nh6 6.Bd5 Nf5 = (0.00) Depth: 16/27 00:00:03 347kN, tb=6241 1...Ng5 2.Bc4 Nf3 3.Bd5 Nd4+ 4.Kc5 Nf5 5.Bf3 Nh6 6.Bd5 Nf5 = (0.00) Depth: 17/30 00:00:04 419kN, tb=6821 1...Ng5 2.Bc4 Nf3 3.Bd5 Nd4+ 4.Kc5 Nf5 5.Bf3 Nh6 6.Bd5 Nf5 = (0.00) Depth: 18/30 00:00:04 530kN, tb=7820 1...Ng5 2.Bc4 Nf3 3.Bd5 Nd4+ 4.Kc5 Nf5 5.Bf3 Nh6 6.Bd5 Nf5 = (0.00) Depth: 19/32 00:00:05 699kN, tb=9528 1...Ng5 2.Bc4 Nf3 3.Bd5 Nd4+ 4.Kc5 Nf5 5.Bf3 Nh6 6.Bd5 Nf5 = (0.00) Depth: 20/32 00:00:06 933kN, tb=12085 1...Ng5 2.Bc4 Nf3 3.Bd5 Nd4+ 4.Kc5 Nf5 5.Bf3 Nh6 6.Bd5 Nf5 = (0.00) Depth: 21/34 00:00:07 1269kN, tb=16235 1...Ng5 2.Bc4 Nf3 3.Bd5 Nd4+ 4.Kc5 Nf5 5.Bf3 Nh6 6.Bd5 Nf5 = (0.00) Depth: 22/36 00:00:08 1723kN, tb=21859 1...Ng5 2.Bc4 Nf3 3.Bd5 Nd4+ 4.Kc5 Nf5 5.Bf3 Nh6 6.Bd5 Nf5 = (0.00) Depth: 23/37 00:00:10 2329kN, tb=29655 1...Ng5 2.Bc4 Nf3 3.Bd5 Nd4+ 4.Kc5 Nf5 5.Bf3 Nh6 6.Bd5 Nf5 = (0.00) Depth: 24/38 00:00:13 3126kN, tb=39753 (, MyTown 06.02.2004)
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