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Subject: Re: Position

Author: pavel

Date: 10:25:04 06/18/02

Go up one level in this thread


On June 18, 2002 at 12:30:13, Charlie GOLD wrote:

>    Here is a position that I gave to Fritz 6. After 7 minutes on infinite it
>only comes up with Rxf4. I believe that Rxh5 leads to a win.
>    [D] 4r1k1/qp1r1p2/2pb1Bp1/p6p/2PP1n1R/1P3P2/P4P2/2Q2K1R w 0 1

New game
4r1k1/qp1r1p2/2pb1Bp1/p6p/2PP1n1R/1P3P2/P4P2/2Q2K1R w - - 0 1

Analysis by Little Goliath 2000 v3.5c:

1.Rxf4 Bxf4 2.Qxf4 Qb6
  -+  (-2.28)   Depth: 6/15   00:00:00  14kN
1.Rxf4 Bxf4 2.Qxf4 Qb6 3.Kg2
  -+  (-2.10)   Depth: 6/15   00:00:00  17kN
1.Rxf4 Bxf4 2.Qxf4 Qb6 3.Kg2
  -+  (-2.45)   Depth: 7/19   00:00:01  47kN
1.Rxf4 Bxf4 2.Qxf4 Re6 3.Kg2 Re2
  -+  (-2.49)   Depth: 7/19   00:00:01  52kN
1.Rxf4 Bxf4 2.Qxf4 Re6 3.Kg2 Re2
  -+  (-2.19)   Depth: 8/25   00:00:03  246kN
1.Rxf4 Re6 2.Rf5 Be7 3.Qg5 Bxf6 4.Rxf6 Rxf6 5.Qxf6 Rxd4
  -+  (-1.67)   Depth: 8/25   00:00:03  422kN
1.Rxh5
  -+  (-1.56)   Depth: 8/29   00:00:03  1760kN
1.Rxh5 gxh5 2.Qxf4 Bxf4 3.Rxh5 Re1+ 4.Kxe1 Bh6 5.Rxh6 Re7+ 6.Bxe7 Qxd4 7.Bf6 Qf4
  ³  (-0.42)   Depth: 8/29   00:00:03  2331kN
1.Rxh5 gxh5 2.Qxf4 Bxf4 3.Rxh5 Re1+ 4.Kxe1 Bh6 5.Rxh6 Re7+ 6.Bxe7 Qxd4 7.Bf6 Qf4
  =  (-0.12)   Depth: 9/37   00:00:04  4609kN
1.Rxh5 gxh5 2.Qxf4 Bxf4 3.Rxh5 Re1+ 4.Kxe1 Bh6 5.Rxh6 Re7+ 6.Bxe7 Qxd4 7.Bf6 Qf4
  ²  (0.68)   Depth: 9/37   00:00:04  6087kN
1.Rxh5 Re1+ 2.Qxe1 Nxh5 3.Rxh5
  +-  (2.25)   Depth: 9/37   00:00:16  19458kN
1.Rxh5 Re1+ 2.Qxe1 Nxh5 3.Rxh5
  +-  (2.55)   Depth: 10/37   00:00:18  22646kN
1.Rxh5 Re1+ 2.Qxe1 Nxh5 3.Rxh5
  +-  (3.35)   Depth: 10/37   00:00:20  25717kN
1.Rxh5 Re1+ 2.Kxe1 Re7+ 3.Kf1 gxh5 4.Qxf4 Re1+
  +-  (5.96)   Depth: 10/37   00:00:24  33035kN
1.Rxh5 Re1+ 2.Kxe1 Re7+ 3.Kf1 gxh5 4.Qxf4 Re1+
  +-  (6.26)   Depth: 11/37   00:00:31  45492kN
1.Rxh5 Re1+ 2.Kxe1 Re7+ 3.Kf1 gxh5 4.Qxf4 Re1+
  +-  (7.06)   Depth: 11/37   00:00:37  55776kN

(Mahamood, home 18.06.2002)


finds it in 3seconds


New game
4r1k1/qp1r1p2/2pb1Bp1/p6p/2PP1n1R/1P3P2/P4P2/2Q2K1R w - - 0 1

Analysis by Shredder 6.02:

1.Rxf4 Bxf4 2.Qxf4 Qxd4
  -+  (-5.65)   Depth: 1/2   00:00:00
1.Rxf4 Bxf4 2.Qxf4 Rxd4
  -+  (-4.90)   Depth: 1/2   00:00:00
1.Rxf4 Bxf4 2.Qxf4 Rxd4 3.Bxd4
  -+  (-3.65)   Depth: 1/2   00:00:00
1.Rxf4 Bxf4 2.Qxf4 Rxd4 3.Bxd4
  -+  (-3.65)   Depth: 2/4   00:00:00
1.Rxf4 Bxf4 2.Qxf4 Rxd4 3.Bxd4
  -+  (-3.65)   Depth: 3/6   00:00:00
1.Rxf4 Bxf4 2.Qxf4 b6
  -+  (-3.59)   Depth: 4/8   00:00:00
1.Rxf4 Qxd4 2.Bxd4 Bxf4
  -+  (-3.34)   Depth: 5/10   00:00:00
1.Rxf4 Bxf4 2.Be5 Bxc1
  -+  (-3.34)   Depth: 5/10   00:00:00
1.Rxf4 Re6 2.Kg2 Bxf4 3.Qxf4 Re2
  -+  (-3.30)   Depth: 6/12   00:00:00
1.Rxf4 Re6 2.Kg2 Qxd4 3.Bxd4 Bxf4
  -+  (-3.05)   Depth: 7/14   00:00:00  42kN
1.Rxf4 Re6 2.Rf5 Qxd4 3.Bxd4 Re1+ 4.Kxe1
  -+  (-2.55)   Depth: 7/14   00:00:00  71kN
1.Rxf4 Bxf4 2.Qxf4 Re6 3.Qh6 Rxf6 4.Rxh5 gxh5 5.Qh8+ Kxh8
  -+  (-2.55)   Depth: 7/14   00:00:01  88kN
1.Rxf4 Bxf4 2.Rxh5 gxh5 3.Qxf4 Kf8 4.Qg5 Rdd8 5.Qg7#
  -+  (-2.30)   Depth: 8/16   00:00:01  241kN
1.Rxf4 Re6 2.Rf5 Be7 3.Qg5 Bxf6 4.Rxf6 Rxf6 5.Qxf6 Qxd4
  -+  (-1.98)   Depth: 8/16   00:00:02  312kN
1.Rxh5 gxh5 2.Rxh5 Re1+ 3.Kxe1 Nxh5 4.Qg5+ Kf8 5.Qxh5 Re7+ 6.Bxe7+ Ke8
  -+  (-1.97)   Depth: 8/16   00:00:09  2020kN
1.Rxh5 gxh5 2.Rxh5 Re1+ 3.Kxe1 Nxh5 4.Qg5+ Kf8 5.Qxh5 Re7+ 6.Bxe7+ Kxe7 7.Qg5+
Ke8 8.Qg8+ Bf8
  -+  (-1.75)   Depth: 8/16   00:00:11  2402kN
1.Rxh5 gxh5 2.Rxh5 Re1+ 3.Kxe1 Nxh5 4.Qg5+ Kf8 5.Qxh5 Re7+ 6.Kf1 Ke8 7.Qh8+ Kd7
8.Bxe7 Bxe7 9.Qe5
  -+  (-1.62)   Depth: 9/18   00:00:13  2860kN

(Mahamood, home 18.06.2002)


finds it in 9sec.


New game
4r1k1/qp1r1p2/2pb1Bp1/p6p/2PP1n1R/1P3P2/P4P2/2Q2K1R w - - 0 1

Analysis by Nimzo 8:

1.a3
  -+  (-5.59)   Depth: 1/11   00:00:00
1.a4
  -+  (-5.53)   Depth: 1/11   00:00:00
1.a4
  -+  (-5.53)   Depth: 1/11   00:00:00
1.d5
  -+  (-5.24)   Depth: 1/11   00:00:00
1.d5
  -+  (-5.24)   Depth: 1/11   00:00:00
1.Rxf4
  -+  (-1.90)   Depth: 1/11   00:00:00
1.Rxf4
  -+  (-2.83)   Depth: 1/11   00:00:00
1.Rxf4 Bxf4 2.Qxf4
  -+  (-2.90)   Depth: 3/14   00:00:00
1.Rxf4
  -+  (-2.65)   Depth: 5/17   00:00:00
1.Rxf4 Bxf4 2.Qxf4 Re6 3.Be5 b5
  -+  (-2.61)   Depth: 5/17   00:00:00
1.Rxf4 Bxf4 2.Qxf4 Re6 3.a4 Rdd6 4.Be5
  -+  (-2.61)   Depth: 6/19   00:00:00  31kN
1.Rxf4
  -+  (-2.36)   Depth: 7/20   00:00:00  31kN
1.Rxf4 Re6 2.Rf5 Be7 3.Bxe7 gxf5 4.Qg5+ Rg6
  -+  (-1.95)   Depth: 7/20   00:00:00  31kN
1.Rxf4
  -+  (-1.70)   Depth: 8/22   00:00:01  546kN
1.Rxf4
  µ  (-1.10)   Depth: 8/22   00:00:01  546kN
1.Rxf4 Re6 2.Rf5 Be7 3.Bxe7 Qxd4 4.Rg5 Qd1+ 5.Kg2 Qxc1
  µ  (-0.96)   Depth: 8/22   00:00:01  546kN
1.Qxf4
  µ  (-0.95)   Depth: 8/22   00:00:02  1265kN
1.Qxf4 Bxf4 2.Rxh5 Re1+ 3.Kxe1 Bd2+ 4.Kxd2 Rxd4+ 5.Kc1 Rd1+ 6.Kxd1
  ³  (-0.47)   Depth: 8/22   00:00:03  1265kN
1.Qxf4
  =  (-0.22)   Depth: 9/23   00:00:04  1869kN
1.Qxf4
  ²  (0.38)   Depth: 9/23   00:00:04  2543kN
1.Qxf4 Bxf4 2.Rxh5 Re1+ 3.Kg2 gxh5 4.Rxh5 Bh6 5.Rxa5
  ²  (0.37)   Depth: 9/23   00:00:04  2543kN
1.Rxh5
  ²  (0.38)   Depth: 9/23   00:00:05  3223kN
1.Rxh5
  ±  (0.98)   Depth: 9/23   00:00:06  3223kN
1.Rxh5
  +-  (3.38)   Depth: 9/23   00:00:08  5324kN
1.Rxh5 gxh5 2.Qxf4 Bxf4 3.Rxh5 Re1+ 4.Kxe1 Qc5 5.dxc5
  +-  (6.77)   Depth: 9/23   00:00:11  7335kN

(Mahamood, home 18.06.2002)


finds it in 5seconds

New game
4r1k1/qp1r1p2/2pb1Bp1/p6p/2PP1n1R/1P3P2/P4P2/2Q2K1R w - - 0 1

Analysis by Chess Tiger 14.0:

1.Rxf4 Bxf4 2.Qxf4 Re6 3.Rg1 Kh7 4.Rg5 Qb6 5.Be5
  -+  (-1.58)   Depth: 8   00:00:00  106kN
1.Rxf4 Re6 2.Be5 Bxe5 3.dxe5 Qc5 4.Re4 Rxe5 5.Reh4
  µ  (-1.26)   Depth: 8   00:00:00  161kN
1.Rxf4 Re6 2.Be5 Bxe5 3.dxe5 Qc5 4.Rfh4 Rxe5 5.f4 Red5
  µ  (-1.34)   Depth: 9   00:00:00  219kN
1.Rxf4 Re6 2.d5 cxd5 3.cxd5 Qa6+ 4.Kg1 Rc7 5.Qd1 Bxf4 6.dxe6 Qxe6 7.Bh4
  µ  (-1.38)   Depth: 10   00:00:01  433kN
1.Rxf4 Re6 2.Rf5 Be7 3.Bxe7 Qxd4 4.Rxa5 Qd1+ 5.Qxd1 Rxd1+ 6.Kg2 Rxh1 7.Kxh1 Rxe7
  -+  (-1.44)   Depth: 11   00:00:03  984kN
1.Rxh5
  ³  (-0.48)   Depth: 11   00:00:15  4252kN
1.Rxh5 gxh5 2.Qxf4 Re1+ 3.Kxe1 Re7+ 4.Kf1 Re1+ 5.Kxe1 Bb4+ 6.Kd1 Kf8 7.Qh6+ Ke8
8.Rxh5
  +-  (9.12)   Depth: 11   00:00:40  11068kN

(Mahamood, home 18.06.2002)



15seconds.


New game
4r1k1/qp1r1p2/2pb1Bp1/p6p/2PP1n1R/1P3P2/P4P2/2Q2K1R w - - 0 1

Analysis by Comet B41:

1.Rxf4 Bxf4 2.Qxf4
  -+  (-2.53)   Depth: 1/6   00:00:00
1.Rxf4 Bxf4 2.Qxf4
  -+  (-2.53)   Depth: 2/11   00:00:00
1.Rxf4 Bxf4 2.Qxf4
  -+  (-2.53)   Depth: 3/11   00:00:00
1.Rxf4 Bxf4 2.Qxf4 Re5 3.dxe5 Rd1+ 4.Ke2 Rxh1
  -+  (-2.40)   Depth: 4/13   00:00:00
1.Rxf4 Bxf4 2.Qxf4
  -+  (-2.40)   Depth: 4/13   00:00:00
1.Rxf4 Bxf4 2.Qxf4 Re6 3.Be5 b6
  -+  (-2.41)   Depth: 5/19   00:00:00  17kN
1.Rxf4 Bxf4 2.Qxf4 Re1+ 3.Kxe1 Qa6
  -+  (-2.28)   Depth: 6/20   00:00:00  58kN
1.Rxf4 Bxf4 2.Qxf4 Re6 3.Kg1 Qa6
  -+  (-2.28)   Depth: 6/20   00:00:00  60kN
1.Rxf4 Bxf4 2.Qxf4 Re6 3.Kg2 Kf8
  -+  (-2.15)   Depth: 7/21   00:00:00  218kN
1.Rxf4 Bxf4 2.Qxf4 Re6 3.Kg2 b6 4.Be5
  -+  (-2.11)   Depth: 7/21   00:00:00  241kN
1.Rxf4 Bxf4 2.Rxh5 Qxd4 3.Bxd4 Re6
  -+  (-1.98)   Depth: 8/29   00:00:02  669kN
1.Rxf4 Bxf4 2.Rxh5 Qxd4 3.Bxd4 Re6
  -+  (-1.71)   Depth: 8/29   00:00:03  1041kN
1.Rxf4 Re6 2.d5 cxd5 3.cxd5 Rc7 4.Rfh4 Rxc1+ 5.Kg2
  -+  (-1.59)   Depth: 8/30   00:00:04  1398kN
1.Rxf4 Re6 2.d5 cxd5 3.cxd5 Rc7 4.Rfh4 Rxc1+ 5.Kg2
  -+  (-1.73)   Depth: 9/30   00:00:04  1656kN
1.Rxh5 gxh5 2.Qxf4 Qxd4 3.Qxd4 Rc8
  -+  (-1.46)   Depth: 9/33   00:00:17  7726kN

(Mahamood, home 18.06.2002)


17seconds.




seems preety easy for most computers.
Some thinks Qxf4 is good, any idea why?



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