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Subject: Re: Mate in 20 Moves

Author: Dann Corbit

Date: 18:01:29 01/26/06

Go up one level in this thread


On January 26, 2006 at 10:21:17, Eduard Nemeth wrote:

>Matt in 20 moves, composition by Eduard Nemeth 2002:
>
>[D]B2k4/KPpP4/n1Pb4/P5p1/5p2/5P2/8/8 b - - 0 1
>
>Analysis by Rybka 1.01 Beta 13 32-bit:
>
>1...Sb8 2.Kxb8 Lc5 3.a6 Ld4 4.a7 Lf6
>  =  (0.00)   Tiefe: 27   00:01:01  1464kN
>1...Sb8 2.Kxb8 Lc5 3.a6 Ld4 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1D 8.g7
>  -+  (-319.61)   Tiefe: 28   00:02:49  2968kN
>
>(Nemeth, Privat 26.01.2006)
>
>Rybka 1.01 Beta 13 finds it on my slow PC after 2:49.
>
>Which says other programs?

Naum finds a mate in 33 in 6 seconds, extends one more ply, and then stops
analyzing (ignorning my time limit).
Analysis from E:\M20.EPD
1/26/2006 5:58:17 PM Level: 120 Seconds
Analyzing engine: Naum

1)
    Avoid move:
    Best move (Naum): Na6-b8
    Not found in: 02:00
     2/5	00:01	         308	1	-5.70	Na6b8 Ka7xb8
     3/6	00:01	         330	1	-5.64	Na6b8 Ka7xb8 Bd6e5
     4/7	00:01	         841	52.562	-6.14	Na6b8 Ka7xb8 Bd6e5 a5a6
     5/7	00:01	         936	58.500	-5.65	Na6b8 Ka7xb8 g5g4 f3xg4 f4f3
     5/9	00:01	       1.017	63.562	-5.65	Na6b8 Ka7xb8 g5g4 Kb8a7 Bd6c5+ Ka7a6
     6/20	00:01	       2.846	177.875	-6.84	Na6b8 Ka7xb8 Bd6c5 a5a6 g5g4 a6a7
g4g3
     7/7	00:01	       3.181	198.812	-6.20	Na6b8 Ka7xb8 Bd6c5 a5a6 g5g4 a6a7 g4g3
     7/11	00:01	       3.687	230.437	-6.18	Na6b8 Ka7xb8 Bd6c5 a5a6 g5g4 f3xg4
f4f3
     8/15	00:01	       4.470	279.375	 0.00	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
Bd4e3
     8/15	00:01	       4.672	292.000	 0.00	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
Bd4e3
     9/13	00:01	       5.517	344.812	 0.00	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
Bd4e3
    10/13	00:01	       7.491	234.093	 0.00	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
Bd4e3
    11/14	00:01	      10.131	316.593	 0.00	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
Bd4e3
    12/17	00:01	      13.967	436.468	 0.00	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
Bd4e3
    13/16	00:01	      16.074	502.312	+2.08	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4
    14/23	00:01	      25.706	546.936	+0.78	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1g1+ Ka7b8 Qg1xg7
    15/27	00:01	      36.393	774.319	+1.01	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7d4+ Ka7b8
    16/28	00:01	      43.128	684.571	+3.11	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7
    16/28	00:01	      51.606	819.142	+3.29	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7a1+ Ka7b8 Qa1b2 Kb8a7 Qb2b6+ Ka7b8 Qb6xc6
    17/31	00:01	      73.779	933.911	+3.29	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7a1+ Ka7b8 Qa1b2 Kb8a7 Qb2b6+ Ka7b8 Qb6xc6
    18/33	00:01	      82.402	876.617	+5.30	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+
    18/33	00:01	     106.932	972.109	+5.30	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7a1+ Ka7b8 Qa1b2 Kb8a7 Qb2b6+ Ka7b8 Qb6xc6 Kb8a7 Qc6b6+ Ka7b8 Kd8xd7
    19/32	00:01	     151.449	1.074.106	+5.32	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7a1+ Ka7b8 Qa1b2 Kb8a7 Qb2b6+ Ka7b8 Qb6xc6 Kb8a7 Qc6c5+ Ka7b8 Kd8xd7
    20/34	00:01	     235.460	752.268	+5.32	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7a1+ Ka7b8 Qa1b2 Kb8a7 Qb2b6+ Ka7b8 Qb6xc6 Kb8a7 Qc6c5+ Ka7b8 Kd8xd7
    21/38	00:01	     361.487	624.329	+5.36	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7a1+ Ka7b8 Qa1b2 Kb8a7 Qb2b6+ Ka7b8 Qb6xc6 Kb8a7 Qc6b6+ Ka7b8 Qb6d6
Kb8a7 Qd6d4+ Ka7b8 Kd8xd7
    22/38	00:02	     558.126	605.342	+5.36	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7a1+ Ka7b8 Qa1b2 Kb8a7 Qb2b6+ Ka7b8 Qb6xc6 Kb8a7 Qc6b6+ Ka7b8 Qb6d6
Kb8a7 Qd6d4+ Ka7b8 Kd8xd7
    23/43	00:03	     843.421	374.687	+5.36	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7a1+ Ka7b8 Qa1b2 Kb8a7 Qb2b6+ Ka7b8 Qb6xc6 Kb8a7 Qc6b6+ Ka7b8 Qb6d6
Kb8a7 Qd6a3+ Ka7b8 Qa3c3 Kb8a7 Qc3d4+ Ka7b8 Kd8xd7
    24/47	00:05	   1.301.457	331.835	+5.36	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7a1+ Ka7b8 Qa1b2 Kb8a7 Qb2b6+ Ka7b8 Qb6xc6 Kb8a7 Qc6b6+ Ka7b8 Qb6d6
Kb8a7 Qd6a3+ Ka7b8 Qa3c3 Kb8a7 Qc3d4+ Ka7b8 Kd8xd7
    25/48	00:06	   1.756.051	326.646	+M33	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+
    25/53	00:09	   2.248.580	288.353	+M33	Na6b8 Ka7xb8 Bd6c5 a5a6 Bc5d4 a6a7
g5g4 f3xg4 f4f3 g4g5 f3f2 g5g6 f2f1Q g6g7 Bd4xa7+ Kb8xa7 Qf1a1+ Ka7b8 Qa1xg7
Kb8a7 Qg7a1+ Ka7b8 Qa1b2 Kb8a7 Qb2b6+ Ka7b8 Qb6xc6 Kb8a7 Qc6a4+ Ka7b8 Qa4xd7
Kb8a7 Qd7a4+ Ka7b8 Kd8e7 Kb8c8 Qa4e8+ Kc8xc7
   1/26/2006 5:59:24 PM, Time for this analysis: 00:00:55, Rated time: 02:00

0 of 1 matching moves
1/26/2006 5:59:25 PM, Total time: 12:01:07 AM
Rated time: 02:00 = 120 Seconds



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