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Subject: Re: Mate in 4

Author: Jeroen van Dorp

Date: 16:51:17 01/08/02

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2kr1b1r/1pp1qp1p/3p2p1/1P1Pp3/2Q1P1n1/R4N2/1PP2PPP/5RK1 w - - 0 1

Analysis by Fritz 7:

1.Qc6 bxc6 2.dxc6 Kb8 3.Rfa1
  +-  (#4)   Depth: 6/15   00:00:00  24kN



Analysis by Shredder 6:

1.Rfa1
  ³  (-0.69)   Depth: 1/2   00:00:00
1.Rfa1
  ³  (-0.69)   Depth: 1/2   00:00:00
1.Rfa1 Kd7
  µ  (-1.07)   Depth: 2/4   00:00:00
1.Rfa1 Kd7
  µ  (-1.07)   Depth: 2/4   00:00:00
1.b6 Qh4
  µ  (-1.05)   Depth: 2/4   00:00:00
1.b6 Bg7 2.bxc7 Qxc7
  µ  (-0.86)   Depth: 2/4   00:00:00
1.b6 Rd7 2.bxc7 Rxc7
  ³  (-0.55)   Depth: 3/6   00:00:00
1.b6 Bh6 2.Ra8+ Kd7 3.Qxc7+ Ke8
  =  (0.00)   Depth: 3/6   00:00:00
1.b6 c5 2.dxc6 bxc6 3.Qxc6+ Qc7
  =  (0.23)   Depth: 3/6   00:00:00
1.b6 f5 2.Ra8+ Kd7 3.Qxc7+ Ke8 4.Rxd8+ Qxd8 5.Qxb7 fxe4
  ²  (0.43)   Depth: 4/8   00:00:00
1.b6 Kb8 2.bxc7+ Kc8 3.cxd8B+ Kxd8
  ²  (0.68)   Depth: 5/10   00:00:00
1.b6 Bg7 2.bxc7 Rde8
  ²  (0.68)   Depth: 5/10   00:00:00
1.b6 Bg7 2.Ra8+ Kd7 3.Qb5+ c6 4.dxc6+ bxc6 5.Ra7+ Ke8 6.Qxc6+ Kf8 7.Rxe7 Kxe7
  ±  (0.93)   Depth: 6/12   00:00:00
1.b6 Bg7 2.Ra8+ Kd7 3.Qb5+ c6 4.dxc6+ bxc6 5.Ra7+ Ke6 6.Qc4+ Kf6 7.Rxe7 Kxe7
  +-  (1.43)   Depth: 6/12   00:00:00
1.b6 Nxh2 2.Ra8+ Kd7 3.Qxc7+ Ke8 4.Rxd8+ Qxd8 5.Nxh2 Qd7
  +-  (2.41)   Depth: 6/12   00:00:00
1.b6 Nxh2 2.Kxh2 h5 3.Rfa1 Bg7 4.Ra8+ Kd7 5.Qxc7+ Ke8
  +-  (2.66)   Depth: 7/14   00:00:01  179kN
1.b6 Kd7 2.Qb5+ c6 3.dxc6+ Ke6 4.h3 Nh6 5.Qd5+ Kf6 6.cxb7
  +-  (3.10)   Depth: 7/14   00:00:01  269kN
1.Qc6 Kb8 2.Rfa1 Qh4 3.Ra8#
  +-  (3.11)   Depth: 7/14   00:00:01  320kN
1.Qc6 Kb8 2.Rfa1 b6 3.Nxe5 Rc8 4.Nxg4 Qxe4
  +-  (3.46)   Depth: 7/14   00:00:02  322kN
1.Qc6 Kb8 2.Rfa1 bxc6 3.dxc6 Nxf2 4.Ra8#
  +-  (#4)   Depth: 7/14   00:00:02  323kN


Analysis by Junior 7:

1.b6 Bh6 2.bxc7
  =  (0.00)   Depth: 3   00:00:00
1.b4 Bh6
  =  (0.03)   Depth: 3   00:00:00
1.h3 Nf6 2.Ra8+ Kd7
  ±  (0.93)   Depth: 3   00:00:00
1.h3 Nf6 2.Ra8+ Kd7 3.Rfa1 Rxa8 4.Rxa8
  ²  (0.65)   Depth: 6   00:00:00  2kN
1.b6!
  ±  (1.23)   Depth: 6   00:00:00  5kN
1.b6 c6 2.Ra8+ Kd7 3.dxc6+ Ke8 4.cxb7 Qxb7 5.Qa4+ Ke7
  +-  (1.50)   Depth: 6   00:00:00  20kN
1.b6!
  +-  (1.80)   Depth: 9   00:00:00  48kN
1.b6! Bg7 2.Ra8+ Kd7 3.Qb5+ c6 4.dxc6+ Ke6 5.Qd5+ Kf6 6.cxb7 Rb8 7.Ra7
  +-  (2.63)   Depth: 9   00:00:01  730kN
1.Qc6!
  +-  (2.64)   Depth: 9   00:00:02  782kN
1.Qc6! bxc6 2.bxc6 Kb8 3.Rfa1 Bh6 4.Ra8#
  +-  (#4)   Depth: 9   00:00:02  789kN
1.Qc6 bxc6 2.bxc6 Kb8 3.Rfa1 Bh6 4.Ra8#
  +-  (#4)   Depth: 9   00:00:02  790kN


Analysis by Hiarcs 7.32:

1.Ra7
  µ  (-1.09)   Depth: 1   00:00:00
1.Ra7 f5
  µ  (-1.36)   Depth: 2/9   00:00:00
1.Ra7 Bh6
  -+  (-1.59)   Depth: 2/9   00:00:00
1.h3 Nf6
  µ  (-1.18)   Depth: 2/9   00:00:00
1.h3 Nf6 2.Rfa1
  µ  (-0.98)   Depth: 3/9   00:00:00
1.Qc6 b6
  ²  (0.46)   Depth: 3/11   00:00:00
1.Qc6 bxc6
  +-  (#4)   Depth: 3/13   00:00:00
1.Qc6 bxc6
  +-  (#4)   Depth: 3/13   00:00:00


Analysis by Nimzo 8:

1.b3
  -+  (-1.57)   Depth: 1/11   00:00:01
1.b4
  µ  (-1.40)   Depth: 1/11   00:00:01
1.b4
  µ  (-1.40)   Depth: 1/11   00:00:01
1.c3
  µ  (-1.09)   Depth: 1/11   00:00:01
1.c3
  µ  (-1.09)   Depth: 1/11   00:00:01
1.Rfa1
  µ  (-1.05)   Depth: 1/11   00:00:01
1.Rfa1
  µ  (-1.05)   Depth: 1/11   00:00:01
1.Rfa1
  -+  (-1.50)   Depth: 3/14   00:00:01
1.Rfa1 f5 2.Ra8+ Kd7 3.R8a7
  -+  (-1.63)   Depth: 3/14   00:00:01
1.Ra8+
  -+  (-1.62)   Depth: 3/14   00:00:01
1.Ra8+ Kd7 2.Ra7 f5 3.Rxb7
  µ  (-1.28)   Depth: 3/14   00:00:01
1.b6
  µ  (-1.27)   Depth: 3/14   00:00:01
1.b6
  ³  (-0.65)   Depth: 3/14   00:00:01
1.b6 f5 2.Ra8+ Kd7 3.Qxc7+ Ke8
  ²  (0.55)   Depth: 3/14   00:00:01
1.b6
  ±  (0.80)   Depth: 5/17   00:00:01
1.b6
  ±  (1.40)   Depth: 5/17   00:00:01
1.b6 Kd7 2.Qb5+ c6 3.dxc6+ Ke6 4.h3 Nf6
  +-  (1.57)   Depth: 5/17   00:00:02
1.b6
  +-  (1.82)   Depth: 6/19   00:00:02
1.b6
  +-  (2.42)   Depth: 6/19   00:00:02
1.b6 Bh6 2.Ra8+ Kd7 3.Qb5+ c6 4.dxc6+ Ke6 5.Qd5+ Kf6 6.cxb7
  +-  (2.86)   Depth: 6/19   00:00:02
1.b6
  +-  (2.41)   Depth: 7/20   00:00:03  442kN
1.b6
  +-  (2.42)   Depth: 7/20   00:00:03  442kN
1.b6 Bh6 2.Ra8+ Kd7 3.Qb5+ c6 4.dxc6+ Ke6 5.Qd5+ Kf6 6.cxb7
  +-  (2.41)   Depth: 7/20   00:00:03  442kN
1.Qc6
  +-  (2.42)   Depth: 7/20   00:00:04  1058kN
1.Qc6
  +-  (3.02)   Depth: 7/20   00:00:04  1058kN
1.Qc6
  +-  (5.42)   Depth: 7/20   00:00:04  1058kN
1.Qc6 Kb8 2.Rfa1 Rd7
  +-  (#3)   Depth: 7/20   00:00:04  1058kN

Chess Tiger 14.0

00:00:00.3	 Mate in 3	12	107573	Qc6 bxc6 bxc6 Kb8 Rfa1 Nxf2 Ra8#
00:00:00.4	 Mate in 3	12	115905	Qc6 bxc6 bxc6 Kb8 Rfa1 Nxf2 Ra8#
00:00:00.0	 Mate in 3	13	190498	Qc6 bxc6 bxc6 Kb8 Rfa1 Nxf2 Ra8#
00:00:01.2	 Mate in 3	14	330075	Qc6 bxc6 bxc6 Kb8 Rfa1 Nxf2 Ra8#
00:00:02.8	 Mate in 3	15	604316	Qc6 bxc6 bxc6 Kb8 Rfa1 Nxf2 Ra8#
00:00:04.6	 Mate in 3	16	1230533	Qc6 bxc6 bxc6 Kb8 Rfa1 Nxf2 Ra8#
00:00:09.3	 Mate in 3	17	2845775	Qc6 bxc6 bxc6 Kb8 Rfa1 Nxf2 Ra8#
00:00:26.0	 Mate in 3	18	7519616	Qc6 bxc6 bxc6 Kb8 Rfa1 Nxf2 Ra8#

Gandalf 5.0

00:00:01.1	1,68	5	179391	b6 h5 Ra8+ Kd7 Qb5+ c6 dxc6+ Ke6 Qd5+ Kf6 cxb7
00:00:03.6	2,08	6	647006	b6 Bh6 Ra8+ Kd7 Qb5+ c6 dxc6+ Ke6 Ra7 Nxh2 Qd5+ Kf6
Kxh2 Bf4+ Kg1
00:00:04.6	2,09	6	694625	Qc6
00:00:04.1	2,38	6	696455	Qc6
00:00:04.2	3,07	6	697544	Qc6
00:00:04.3	4,44	6	698628	Qc6
00:00:04.2	7,20	6	699172	Qc6
00:00:04.1	12,70	6	699583	Qc6
00:00:04.8	23,71	6	699997	Qc6
00:00:04.8	 Mate in 4	6	701471	Qc6 bxc6 dxc6 Kb8 Rfa1 Nf6 Ra8#
00:00:04.4	 Mate in 4	7	712158	Qc6 bxc6 dxc6 Kb8 Rfa1 Nf6 Ra8#
00:00:04.7	 Mate in 4	8	798942	Qc6 bxc6 dxc6 Kb8 Rfa1 Nf6 Ra8#
00:00:04.7	 Mate in 4	9	898512	Qc6 bxc6 dxc6 Kb8 Rfa1 Nf6 Ra8#
00:00:05.1	 Mate in 4	10	1179131	Qc6 bxc6 dxc6 Kb8 Rfa1 Nf6 Ra8#
00:00:06.6	 Mate in 4	11	1550872	Qc6 bxc6 dxc6 Kb8 Rfa1 Nf6 Ra8#
00:00:11.2	 Mate in 4	12	3171435	Qc6 bxc6 dxc6 Kb8 Rfa1 Nf6 Ra8#





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