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Up Topic The Rybka Lounge / Test Positions / Can Rybka solve this? part VII
- By Kornrade (*) [ro] Date 2012-01-22 16:01
5b2/B7/1pp5/8/5ppk/5n1b/5RBP/5K2 w - - 0 1

White to move and draw.

Enjoy!
- - By Kornrade (*) [de] Date 2012-02-01 09:09
Is this too difficult or too boring/uninteresting?
Parent - - By Labyrinth (****) [us] Date 2012-02-01 10:08
FEN:
5b2/B7/1pp5/8/5ppk/5n1b/5RBP/5K2 w - - 0 1


Deep Rybka 4 w32:
   1  00:00            24  24.000  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
   2  00:00            30  30.000  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
   3  00:00            36  36.000  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
   4  00:00            42  42.000  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
   5  00:00            48  48.000  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
   6  00:00            54  54.000  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
   7  00:00            60  60.000  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
   8  00:00            67  67.000  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
   9  00:00            73  73.000  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
  10  00:00            79  4.647  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
  11  00:00            85  5.000  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
  12  00:00            91  5.352  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
  13  00:00            97  5.705  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
  14  00:00           103  6.058  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
  15  00:00        30.867  140.304  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bf5 Bd4 Be6 Bc5
  16  00:00        70.313  140.345  -1.40  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Bc4 Bb6 Bd3 Bc5
  17  00:00       135.337  144.128  -1.41  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bd3 Bc5 Ba6 Bd4 Be2 Bc5
  18  00:01       239.740  146.004  -1.41  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bc5 Be6 Bd4 Bd7 Bb6 Bf5 Bd4 Be6 Bc5 Bc4 Bb6 Bb5 Bd4 Be2 Bc5 Bd3 Bd4
  19  00:02       390.779  146.194  -1.41  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bd4 Be6 Bc5 Bc4 Bb6 Bb5
  20  00:04       599.982  144.330  -1.41  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Bb6 Bh3 Bd4 Be6 Bc5 Bc4 Bb6
  21  00:06     1.007.707  144.577  -1.41  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+ Kxf3 Bc5 g3 Be7 Bh3 Bd6 Bc8 Bc5 Be6 Bd4 Bd7 Bb6 Bh3 Bd4 Ke4 Bb6 Kf4 Bc5 Ke4 Bd6 Kf3 Be7
  22  00:12     1.786.200  145.610  -1.41  Bxb6 Nxh2+
  23  00:19     2.879.370  146.131  -1.41  Bxb6 Nxh2+ Kg1
  24  01:14    13.334.901  178.951  -1.91  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8 Nf3+ Rxf3+
  25  02:08    22.448.608  174.484  -1.97  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8
  25  03:37    35.499.388  162.875  -1.97  Bxb6 Nxh2+ Kg1 Bxg2 Rxf4 Kg3 Rxf8
Parent - - By Kornrade (*) [de] Date 2012-02-02 07:55
Nice try, but wrong :)
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 and black wins in 30 moves according to 6-men tablebase :)
Parent - - By Labyrinth (****) [us] Date 2012-02-02 08:52
By trying I hope you were referring to Rybka :-)

If you notice that analysis is after 3 minutes 37 seconds on my slow computer :-)
Parent - By Kornrade (*) [de] Date 2012-02-02 09:01
Yes, of course. :)
You have not expressed an opinion (yet), so it is only natural to refer only to the 3min. rybka try.
Parent - - By Hurnavich (****) Date 2012-07-11 22:34
New game
5b2/B7/1pp5/8/5ppk/5n1b/5RBP/5K2 w - - 0 1


Analysis by Critter 1.6a 64-bit.:

1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Kxg2 f3+ 4.Kxh2 g3+ 5.Kg1 gxf2+ 6.Kxf2 Kg4 7.Bd4
  -+  (-1.49)   Depth: 6/13   00:00:00  2kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Kxg2 f3+ 4.Kxh2 g3+ 5.Kg1 gxf2+ 6.Kxf2 Kg4 7.Bd4
  -+  (-1.49)   Depth: 7/14   00:00:00  3kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Kxg2 f3+ 4.Kxh2 g3+ 5.Kg1 gxf2+ 6.Kxf2 Kg4 7.Bd4
  -+  (-1.58 --)   Depth: 8/15   00:00:00  7kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Kxg2 f3+ 4.Kxh2 g3+ 5.Kg1 gxf2+ 6.Kxf2 Kg4 7.Bd4 c5 8.Be5
  -+  (-1.62)   Depth: 8/15   00:00:00  8kN
1.Bxh3 Kxh3 2.Bxb6 Nxh2+ 3.Kg1 Nf3+ 4.Kf1 Bd6 5.Ba5 Bc5
  -+  (-1.53)   Depth: 8/15   00:00:00  8kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Kxg2 f3+ 4.Kxh2 g3+ 5.Kg1 gxf2+ 6.Kxf2 Kg4 7.Bd4 c5 8.Be5
  -+  (-1.43 ++)   Depth: 9/22   00:00:00  34kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Kxg2 f3+ 4.Kxh2 g3+ 5.Kg1 gxf2+ 6.Kxf2 Kg4 7.Bd4 c5 8.Be5
  -/+  (-1.29 ++)   Depth: 9/22   00:00:00  34kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Kxg2 f3+ 4.Kxh2 g3+ 5.Kg1 gxf2+ 6.Kxf2 Kg4 7.Bd4 c5 8.Be5
  -/+  (-1.08 ++)   Depth: 9/22   00:00:00  36kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bc5 g3 8.Bd4 Be6
  -/+  (-0.93)   Depth: 9/22   00:00:00  38kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bc5 g3 8.Bd4 Bg4 9.Bc5 Be6 10.Bd4
  -/+  (-0.95)   Depth: 10/22   00:00:00  53kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bc5 g3 8.Ba7 Be6 9.Bc5 Bf7 10.Bd4
  -/+  (-1.01)   Depth: 11/22   00:00:00  78kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bc5 g3 8.Ba7 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Bc5 Bf5
  -/+  (-1.01)   Depth: 12/25   00:00:00  138kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bc5 g3 8.Ba7 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Bc5 Be6 12.Ba7 Bc8 13.Bd4 Bg4
  -/+  (-1.01)   Depth: 13/27   00:00:00  243kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bc5 g3 8.Ba7 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Bc5 Be6 12.Ba7 Bc8 13.Bd4 Bg4
  -/+  (-1.01)   Depth: 14/27   00:00:00  369kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bc5 g3 8.Ba7 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Bc5 Be6 12.Bd4 Bf5 13.Bc5 Bc8 14.Bd4 Bg4
  -/+  (-1.01)   Depth: 15/28   00:00:00  655kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bc5 g3 8.Ba7 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Bc5 Be6 12.Bd4 Bf5 13.Bc5 Bc8 14.Bd4 Bg4
  -/+  (-1.01)   Depth: 16/29   00:00:00  1066kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bc5 g3 8.Ba7 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Bc5 Be6 12.Bd4 Bf5 13.Bc5 Bc8 14.Bd4 Bg4
  -/+  (-1.01)   Depth: 17/31   00:00:00  1819kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bc5 g3 8.Ba7 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Bc5 Bc8 12.Bd4 Bf5 13.Bc5 Be6 14.Ba7 Bc8 15.Bd4
  -/+  (-1.01)   Depth: 18/31   00:00:00  3031kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 Bg4 9.Ba3 Bf5 10.Bc5 Bc8 11.Bd4 Bg4 12.Bc5 Be6 13.Be7 Bg8 14.Bd6 Bh7 15.Bc5 Bf5 16.Bd4 Bg4
  -/+  (-1.01)   Depth: 19/37   00:00:00  5495kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 Bg4 9.Ba3 Bf5 10.Bc5 Bc8 11.Bd4 Bg4 12.Bc5 Be6 13.Be7 Bg8 14.Bd6 Bh7 15.Bc5 Bf5 16.Bd4 Bg4
  -/+  (-1.10 --)   Depth: 20/37   00:00:01  11062kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 Bg4 9.Ba3 Bf5 10.Bc5 Bc8 11.Bd4 Bg4 12.Bc5 Be6 13.Be7 Bg8 14.Bd6 Bh7 15.Bc5 Bf5 16.Bd4 Bg4
  -/+  (-1.23 --)   Depth: 20/38   00:00:01  15656kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 Bg4 9.Ba3 Bf5 10.Bc5 Bc8 11.Bd4 Bg4 12.Bc5 Be6 13.Be7 Bg8 14.Bd6 Bh7 15.Bc5 Bf5 16.Bd4 Bg4
  -+  (-1.42 --)   Depth: 20/44   00:00:02  22427kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 Bg4 9.Ba3 Bf5 10.Bc5 Bc8 11.Bd4 Bg4 12.Bc5 Be6 13.Be7 Bg8 14.Bd6 Bh7 15.Bc5 Bf5 16.Bd4 Bg4
  -+  (-1.70 --)   Depth: 20/44   00:00:03  32553kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 g2 9.Bc5 Be6 10.Bd4 Bc4 11.Bc5 Bf1 12.Ba7 Ke4 13.Kf2 Kd5 14.Be3 c5 15.Ke1 c4 16.Kd2 Ke4 17.Bg1 Bd3 18.Bc5 Kf3 19.Be3 Bf5 20.Bg1 Bd3 21.Bd4 Be4 22.Kc3 Bd3
  -+  (-1.70)   Depth: 20/44   00:00:03  33842kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 g2 9.Bc5 Be6 10.Bd4 Bc4 11.Bc5 Bf1 12.Ba7 Ke4 13.Kf2 Kd5 14.Be3 c5 15.Ke1 c4 16.Kd2 Ke4 17.Bg1 Bd3 18.Bc5 Kf3 19.Be3 Bf5 20.Bg1 Bd3 21.Bd4 Be4 22.Kc3 Bd3
  -+  (-1.70)   Depth: 21/44   00:00:03  36411kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 g2 9.Bc5 Be6 10.Bd4 Bc4 11.Bc5 Bf1 12.Ba7 Ke4 13.Kf2 Kd5 14.Be3 c5 15.Ke1 c4 16.Kd2 Ke4 17.Bg1 Bd3 18.Bc5 Kf3 19.Be3 Bf5 20.Bg1 Bd3 21.Bd4 Be4 22.Kc3 Bd3
  -+  (-1.70)   Depth: 22/44   00:00:04  49515kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 g2 9.Bc5 Be6 10.Bd4 Bc4 11.Bc5 Bf1 12.Ba7 Ke4 13.Kf2 Kd5 14.Be3 c5 15.Ke1 c4 16.Kd2 Ke4 17.Bg1 Bd3 18.Bc5 Kf3 19.Be3 Bf5 20.Bg1 Bd3 21.Bd4 Be4 22.Kc3 Bd3
  -+  (-1.70)   Depth: 23/44   00:00:06  69881kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 g2 9.Bc5 Be6 10.Bd4 Bc4 11.Bc5 Bf1 12.Ba7 Ke4 13.Kf2 Kd5 14.Be3 c5 15.Ke1 c4 16.Kd2 Ke4 17.Bg1 Bd3 18.Bc5 Kf3 19.Be3 Bf5 20.Bg1 Bd3 21.Bd4 Be4 22.Kc3 Bd3
  -+  (-1.70)   Depth: 24/44   00:00:09  101mN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 g2 9.Bc5 Be6 10.Bd4 Bc4 11.Bc5 Bf1 12.Ba7 Ke4 13.Kf2 Kd5 14.Be3 c5 15.Ke1 c4 16.Kd2 Ke4 17.Bg1 Kf3 18.Bc5 Bd3 19.Be3 Bf5 20.Bd4 Be4 21.Kc3 Bd3
  -+  (-1.70)   Depth: 25/45   00:00:14  152mN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 g2 9.Bc5 Be6 10.Bd4 Bc4 11.Bc5 Bf1 12.Ba7 Ke4 13.Kf2 Kd5 14.Be3 c5 15.Ke1 c4 16.Kd2 Bd3 17.Ba7 Bf5 18.Bg1 Bg6 19.Ba7 Bd3 20.Bf2 Bh7 21.Ke3
  -+  (-1.70)   Depth: 26/49   00:00:20  229mN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 g2 9.Bc5 Be6 10.Bd4 Bc4 11.Bc5 Bf1 12.Ba7 Ke4 13.Kf2 Kd5 14.Be3 c5 15.Ke1 c4 16.Kd2 Bd3 17.Ba7 Ke4 18.Bg1 Bb1 19.Kc3 Kd5 20.Kd2 Bg6 21.Ba7 Bf5 22.Bg1 Bg6
  -+  (-1.70)   Depth: 27/56   00:00:31  353mN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Ba7 g3 7.Bc5 Bh3 8.Bd6 g2 9.Bc5 Be6 10.Bd4 Bc4 11.Bc5 Bf1 12.Ba7 Ke4 13.Kf2 Kd5 14.Be3 c5 15.Ke1 c4 16.Kd2 Bd3 17.Ba7 Ke4 18.Bg1 Bb1 19.Kc3 Kd5 20.Kd2 Bg6 21.Ba7 Bf5 22.Bg1 Bg6
  -+  (-1.80 --)   Depth: 28/56   00:03:07  2226mN

(Hurnavich,11.07.2012)
Parent - By Hurnavich (****) Date 2012-07-11 22:40
New game
5b2/B7/1pp5/8/5ppk/5n1b/5RBP/5K2 w - - 0 1


Analysis by Deep Rybka 4.1 SSE42 x64:

1.Bxh3 Kxh3 2.Bxb6 Nxh2+ 3.Kg1 Nf3+ 4.Kf1 Bd6 5.Rc2 g3 6.Rxc6 Be7 7.Ke2
  -+  (-1.72)   Depth: 6   00:00:00  2kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxg2 g3
  -+  (-1.64 ++)   Depth: 6   00:00:00  2kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxg2 g3
  -+  (-1.49 ++)   Depth: 6   00:00:00  2kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3
  -/+  (-1.20)   Depth: 6   00:00:00  3kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxg2 g3 4.Rc2 Nf3+ 5.Kf1 c5 6.Bxc5 Bxc5 7.Rxc5 Nd2+ 8.Ke2 g2 9.Rc1 Ne4
  -+  (-2.18)   Depth: 7   00:00:07  9kN
1.Bxh3 Kxh3 2.Bxb6 Nxh2+ 3.Kg1 Nf3+ 4.Kf1 Bh6 5.Rc2 g3 6.Rxc6 Bg5 7.Rc3
  -+  (-1.89)   Depth: 7   00:00:07  9kN
1.Bxh3 Kxh3 2.Bxb6 Nxh2+ 3.Kg1 Nf3+ 4.Kf1 Bh6 5.Rc2 g3 6.Rxc6 Bg5 7.Rc3 Nh2+ 8.Kg1 Bf6
  -+  (-1.86)   Depth: 8   00:00:07  10kN
1.Bxh3 Kxh3 2.Bxb6 Nxh2+ 3.Kg1 Nf3+ 4.Kf1 Bh6 5.Rc2 g3 6.Rxc6 Bg5 7.Rc3 Kg4 8.Rc2 Bf6 9.Rc6 Bd4
  -+  (-2.05)   Depth: 9   00:00:07  18kN, tb=1
1.Bxh3 Kxh3 2.Bxb6 Nxh2+[] 3.Kg1 Nf3+[] 4.Kf1 Bd6 5.Rc2 g3 6.Rxc6 Nd2+ 7.Ke2 Bb4 8.Rf6 Kg4 9.Rg6+ Kf5 10.Rc6 f3+ 11.Ke1 Kg4 12.Rg6+ Kh3 13.Rh6+ Kg2
  -+  (-2.53)   Depth: 10   00:00:07  42kN, tb=7
1.Bxh3 Kxh3 2.Bxb6 Nxh2+ 3.Kg1 Nf3+ 4.Kf1 Bd6 5.Rc2 g3 6.Rxc6 Nd2+ 7.Ke2 Bb4 8.Rf6 Kg4 9.Rg6+ Kf5 10.Rc6 f3+ 11.Ke1 Kg4 12.Rg6+ Kh3 13.Rh6+ Kg2
  -+  (-2.53)   Depth: 11   00:00:08  47kN, tb=10
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxg2 g3 4.Rc2 Nf3+ 5.Kf1 Kh3 6.Ra2 c5 7.Bc7 Kg4 8.Ra8 Be7
  -+  (-2.41 ++)   Depth: 11   00:00:08  55kN, tb=11
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxg2 g3 4.Rc2 Nf3+ 5.Kf1 Kh3 6.Rxc6 g2+ 7.Ke2 Ne5 8.Rc7 Kh2 9.Rh7+ Kg3 10.Bf2+ Kg4 11.Rh4+ Kg5 12.Rh3 Kf5 13.Bb6 Nc4 14.Kf2 Nxb6 15.Kxg2
  -+  (-2.50)   Depth: 11   00:00:08  62kN, tb=12
1.Bxh3 Kxh3 2.Bxb6 Nxh2+ 3.Kg1 Nf3+ 4.Kf1 Bd6 5.Rc2 g3 6.Rxc6 Nd2+ 7.Ke2 Bb4 8.Rf6 Kg4 9.Rg6+ Kf5 10.Rg8 f3+ 11.Ke1 Nc4+ 12.Kf1 Nxb6 13.Rxg3 Kf4 14.Rg6 Nd5 15.Rc6 Ne3+ 16.Kf2
  -+  (-2.60)   Depth: 12   00:00:10  142kN, tb=30
1.Bxh3 Kxh3 2.Rxf3+ gxf3[] 3.Bxb6 c5 4.Kf2 c4 5.Bc7 Kg4 6.h3+ Kf5 7.Kxf3 Bh6 8.Ba5 Bg7 9.Bd2 Be5 10.Bc1 c3 11.h4 c2 12.Bd2 Bc7 13.Bc1 Bd6 14.Bd2 Kg6 15.Ke4 Kh5
  -+  (-2.64)   Depth: 13   00:00:12  257kN, tb=49
1.Bxh3 Kxh3 2.Rxf3+ gxf3[] 3.Bxb6 c5 4.Kf2 c4 5.Bc7 Kg4 6.h3+[] Kf5[] 7.Kxf3[] Bh6 8.h4 c3 9.Bd6 c2 10.Ba3 Bg7 11.Bc1 Be5 12.Bd2 Bd6 13.Bc1 Bc7 14.Bd2 Be5 15.Bc1 Bd6 16.Bd2
  -+  (-2.76)   Depth: 14   00:00:16  280kN, tb=98
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxg2 Nf3+ 4.Kf1 g3 5.Rc2 Nh2+ 6.Kg1 Nf3+ 7.Kf1 Nh2+ 8.Kg1 Nf3+ 9.Kf1 Nh2+ 10.Kg1 Nf3+ 11.Kf1 Nh2+ 12.Kg1 Nf3+ 13.Kf1 Nh2+ 14.Kg1 Nf3+ 15.Kf1 Nh2+ 16.Kg1
  -+  (-2.56)   Depth: 14   00:00:18  308kN, tb=113
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxg2 Nf3+ 4.Kf1 g3 5.Rc2 Nh2+ 6.Kg1 Nf3+ 7.Kf1 Nh2+ 8.Kg1 Nf3+ 9.Kf1 Nh2+ 10.Kg1 Nf3+ 11.Kf1 Nh2+ 12.Kg1 Nf3+ 13.Kf1 Nh2+ 14.Kg1 Nf3+ 15.Kf1 Nh2+ 16.Kg1
  -+  (-2.70)   Depth: 15   00:00:20  348kN, tb=128
1.Bxb6 Nxh2+[] 2.Kg1 Bxg2[] 3.Rxg2 Nf3+ 4.Kf1 g3 5.Rc2 Nh2+ 6.Kg1 Kh3 7.Rxc6 Nf3+ 8.Kf1[] g2+ 9.Ke2 Ne5 10.Rc7 Kg3 11.Bf2+ Kg4[] 12.Ba7 f3+ 13.Kf2 Nd3+ 14.Kg1 Bh6 15.Rh7 Bg5 16.Rh2
  -+  (-2.70)   Depth: 16   00:00:21  408kN, tb=145
1.Bxb6 Nxh2+[] 2.Kg1 Bxg2[] 3.Rxg2 Nf3+ 4.Kf1 g3 5.Rc2 Kh3 6.Rxc6 g2+ 7.Ke2 Ne5 8.Rc7 Kg3 9.Bf2+ Kg4[] 10.Ba7 f3+ 11.Kf2 Nd3+ 12.Kg1 Bh6 13.Rh7 Bg5 14.Rh2 Nf4 15.Kf2 Bf6 16.Be3
  -+  (-2.66)   Depth: 17   00:00:24  528kN, tb=173
1.Bxb6 Nxh2+[] 2.Kg1 Bxg2[] 3.Rxg2 Nf3+ 4.Kf1 g3 5.Rc2 Kh3 6.Rxc6 g2+ 7.Ke2 Ne5 8.Rc7 Kg3 9.Bf2+[] Kg4[] 10.Bb6 f3+ 11.Kf2 Nd3+ 12.Kg1 Bh6 13.Rc8 Nf4 14.Rg8+ Bg5 15.Be3
  -+  (-2.54 ++)   Depth: 18   00:00:29  665kN, tb=225
1.Bxb6 Nxh2+[] 2.Kg1 Bxg2[] 3.Rxg2 Nf3+ 4.Kf1 Kh3 5.Rc2 Nh2+ 6.Kg1 g3 7.Rxc6 Nf3+ 8.Kf1[] g2+ 9.Ke2 Ne5 10.Rc7 Kg3 11.Bf2+ Kg4[] 12.Bb6 f3+ 13.Kf2 Nd3+ 14.Kg1[] Bh6 15.Rc8[] Bg5 16.Rg8
  -+  (-2.70)   Depth: 18   00:00:41  1082kN, tb=351
1.Bxh3 Kxh3 2.Rxf3+ gxf3 3.Bxb6[] c5 4.Kf2 Kg4 5.h3+ Kf5 6.Kxf3 c4 7.Bd4 Bb4 8.Bb6 Bd6 9.Ba5 Be5 10.Bb4 c3 11.h4 Bd4 12.Ba3 c2 13.Bc1 Be3 14.Ba3 c1Q 15.Bxc1 Bxc1
  -+  (-2.64)   Depth: 18   00:00:41  1082kN, tb=351
1.Bxh3 Kxh3 2.Rxf3+ gxf3 3.Bxb6[] c5 4.Kf2 Kg4 5.h3+ Kf5 6.Kxf3 c4 7.Bd4 Bb4 8.Bb6 Bd6 9.Ba5 Be5 10.Bb4 c3 11.h4 Bd4 12.Ba3 c2 13.Bc1 Be3[] 14.Ba3 c1Q 15.Bxc1 Bxc1
  -+  (-2.64)   Depth: 19   00:00:49  1300kN, tb=450
1.Bxh3 Kxh3 2.Rxf3+ gxf3 3.Bxb6[] c5 4.Kf2 Kg4 5.h3+ Kf5 6.Kxf3 c4 7.Bd4 Bb4 8.Bb6 Bd6 9.Ba5 Be5 10.Bb4 c3 11.h4 Bd4 12.Ba3 c2 13.Bc1 Be3[] 14.Ba3 c1Q 15.Bxc1 Bxc1
  -+  (-2.64)   Depth: 20   00:00:59  1613kN, tb=579
1.Bxh3 Kxh3 2.Rxf3+ gxf3 3.Bxb6[] c5 4.Kf2 Kg4 5.h3+ Kf5 6.Kxf3 c4 7.Bc7 Bh6 8.h4 c3 9.Bd6 c2 10.Ba3 Bg7 11.Bc1 Be5 12.Bd2 Bd6 13.Bc1 Bc7 14.Bd2 Be5 15.Bc1 Bd6 16.Bd2
  -+  (-2.76)   Depth: 21   00:01:21  2199kN, tb=930
1.Bxh3 Kxh3 2.Rxf3+ gxf3 3.Bxb6[] c5 4.Kf2 Kg4 5.h3+ Kf5[] 6.Kxf3 c4 7.Bc7 Bh6 8.h4 c3 9.Bd6 c2 10.Ba3 Bg7 11.Bc1 Be5 12.Bd2 Bd6 13.Bc1 Bc7 14.Bd2 Be5 15.Bc1 Bd6 16.Bd2
  -+  (-2.76)   Depth: 22   00:02:25  4211kN, tb=1899
1.Bxh3 Kxh3 2.Rxf3+ gxf3 3.Bxb6[] c5 4.Kf2 Kg4 5.h3+ Kf5[] 6.Kxf3 c4[] 7.Bc7 Bh6[] 8.h4 c3 9.Bd6 c2 10.Ba3[] Bg7 11.Bc1 Be5[] 12.Bd2 Bd6 13.Bc1 Bc7 14.Bd2 Be5 15.Bc1 Bd6 16.Bd2
  -+  (-2.76)   Depth: 23   00:03:02  5492kN, tb=2613

(Hurnavich,11.07.2012)
- - By hsnksc77 (**) [tr] Date 2012-02-04 14:53
New game
5b2/B7/1pp5/8/5ppk/5n1b/5RBP/5K2 w - - 0 1


Analysis by Houdini 2.0c Pro x64:

1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Kxg2 f3+ 4.Kxh2 g3+ 5.Kg1 gxf2+ 6.Kxf2 Kg4 7.Bd4
  -/+  (-1.09)   Depth: 6/15   00:00:00  2kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Kxg2 f3+ 4.Kxh2 g3+ 5.Kg1 gxf2+ 6.Kxf2 Kg4 7.Bd4
  -/+  (-1.09)   Depth: 7/15   00:00:00  3kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Kxg2 f3+ 4.Kxh2 g3+ 5.Kg1 gxf2+ 6.Kxf2 Kg4 7.Bd4 c5 8.Be5
  -/+  (-1.19)   Depth: 8/18   00:00:00  7kN
1.Bxb6
  -/+  (-1.11 !)   Depth: 9/18   00:00:00  10kN
1.Bxb6
  -/+  (-0.97 !)   Depth: 9/18   00:00:00  10kN
1.Bxb6
  =/+  (-0.66 !)   Depth: 9/18   00:00:00  11kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bb6 g3 8.Bc5 Be6 9.Bd4
  =/+  (-0.69)   Depth: 9/26   00:00:00  50kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bb6 g3 8.Bc5 Bc8 9.Bd4 Bf5 10.Ba7 Be6 11.Bb6 Bf7 12.Bd4 Bd5 13.Bb6
  =/+  (-0.68)   Depth: 10/26   00:00:00  69kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bb6 g3 8.Bc5 Bc8 9.Bd4 Bf5 10.Ba7 Be6 11.Bb6 Bf7 12.Bd4 Kf4 13.Bc5 Bd5 14.Bd4
  =/+  (-0.68)   Depth: 11/26   00:00:00  100kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bb6 g3 8.Bc5 Bc8 9.Bd4 Bf5 10.Ba7 Be6 11.Bb6 Bf7 12.Bd4 Kf4 13.Bc5 Bd5 14.Bd4
  =/+  (-0.68)   Depth: 12/28   00:00:00  136kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bb6 g3 8.Bc5 Bc8 9.Bd4 Bf5 10.Ba7 Bg4 11.Bd4 Be6 12.Ba7 Bf7 13.Bd4 Kf4 14.Bc5 Bd5 15.Bd4 Be6 16.Bc5
  =/+  (-0.68)   Depth: 13/29   00:00:00  247kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bb6 g3 8.Bc5 Bc8 9.Bd4 Bf5 10.Ba7 Bg4 11.Bd4 Be6 12.Ba7 Bd5 13.Bc5 Bf7 14.Bd4 Kf4 15.Bc5 Bd5 16.Bd4 Be4 17.Bc5 Bd5 18.Bd4
  =/+  (-0.68)   Depth: 14/32   00:00:00  424kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bb6 g3 8.Bc5 Bc8 9.Bd4 Bf5 10.Ba7 Bg4 11.Bb6 Be6 12.Bd4 Bf7 13.Bc5 Be6 14.Bb6 Bf7 15.Bc5 Be6
  =/+  (-0.68)   Depth: 15/35   00:00:00  696kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bb6 g3 8.Bc5 Bc8 9.Bd4 Bf5 10.Ba7 Bg4 11.Bb6 Be6 12.Bd4 Bc8 13.Ba7 Bf5 14.Bd4 Be6 15.Ba7 Bd5 16.Bc5 Kf4 17.Bd4 Be4 18.Bc5 Kf3 19.Bd4 Kf4 20.Bc5
  =/+  (-0.68)   Depth: 16/35   00:00:00  1071kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bf2 Bh3 7.Bb6 g3 8.Bc5 Bc8 9.Bd4 Bf5 10.Ba7 Bg4 11.Bb6 Be6 12.Bd4 Bf7 13.Bb6 Bd5 14.Ba7 Be6 15.Bb6 Bf7 16.Bc5 Bd5 17.Bd6 Kg4 18.Bf8 Kf4 19.Bd6+ Kg4 20.Bf8
  =/+  (-0.68)   Depth: 17/39   00:00:00  1773kN
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Ba7 Bc8 12.Bb6 Be6 13.Bd4 Bd5 14.Bc5 Be4 15.Bd4 Kf4 16.Bc5 Kf3 17.Bd4
  =/+  (-0.68)   Depth: 18/39   00:00:00  3267kN, tb=1
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Ba7 Bc8 12.Bb6 Be6 13.Bd4 Bd5 14.Bc5 Be4 15.Bd4 Kf4 16.Bc5 Kf3 17.Bd4
  =/+  (-0.68)   Depth: 19/39   00:00:01  5195kN, tb=3
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Ba7 Bc8 12.Bb6 Be6 13.Bd4 Bd5 14.Bc5 Be4 15.Bd4 Kf4 16.Bc5 Bd5 17.Bd4 Kg4 18.Bc5 Kf4 19.Bd4
  =/+  (-0.68)   Depth: 20/39   00:00:01  8732kN, tb=7
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bf5 10.Bd4 Bg4 11.Ba7 Bc8 12.Bb6 Bh3 13.Bc5 Bc8 14.Bd4 Bf5 15.Ba7 Bg4 16.Bb6 Be6 17.Bd4 Bf5 18.Ba7
  =/+  (-0.68)   Depth: 21/39   00:00:02  13788kN, tb=18
1.Bxb6 Nxh2+
  -/+  (-0.74 --)   Depth: 22/39   00:00:03  22729kN, tb=35
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bc4 10.Bb4 g2 11.Bc5 Bf1 12.Bd6 Ke4 13.Bc5 Kd5 14.Bf8 c5 15.Be7 c4 16.Bf6 Ke4 17.Bc3 Ke3
  -/+  (-0.82)   Depth: 22/39   00:00:05  38301kN, tb=54
1.Bxb6 Nxh2+
  -/+  (-0.89 --)   Depth: 23/40   00:00:07  56537kN, tb=86
1.Bxb6 Nxh2+
  -/+  (-1.03 --)   Depth: 23/41   00:00:10  85172kN, tb=117
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bc4 10.Bb4 g2 11.Bc5 Bf1 12.Bd6 Ke4 13.Kf2 Kd4 14.Bf4 c5 15.Be3+ Kd5 16.Ke1 c4 17.Kd2 Ke4 18.Bb6 Bd3 19.Ba7 Kf3 20.Kc3 Kf4 21.Bd4
  -/+  (-1.17)   Depth: 23/45   00:00:15  122mN, tb=155
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bc4 10.Bb4 g2 11.Bc5 Bf1 12.Bd6 Ke4 13.Kf2 Kd4 14.Bf4 c5 15.Be3+ Kd5 16.Ke1 c4 17.Kd2 Ke4 18.Bb6 Bd3 19.Ba7 Kf3 20.Kc3 Kf4 21.Bd4
  -/+  (-1.17)   Depth: 24/45   00:00:21  171mN, tb=236
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bc4 10.Bb4 g2 11.Bc5 Bf1 12.Bd6 Ke4 13.Kf2 Kd4 14.Bf4 c5 15.Be3+ Kd5 16.Ke1 c4 17.Kd2 Ke4 18.Bb6 Bd3 19.Ba7 Kf3 20.Kc3 Kf4 21.Bd4
  -/+  (-1.17)   Depth: 25/45   00:00:29  237mN, tb=388
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bc4 10.Bb4 g2 11.Bc5 Bf1 12.Bd6 Ke4 13.Kf2 Kd4 14.Bf4 Kd5 15.Be3 c5 16.Ke1 c4 17.Kd2 Ke4 18.Bb6 Bd3 19.Ba7 Kf3 20.Kc3 Kf4 21.Bd4
  -/+  (-1.17)   Depth: 26/48   00:00:41  345mN, tb=719
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bc4 10.Bb4 g2 11.Bc5 Bf1 12.Bd6 Bd3 13.Bc5 Bc4 14.Kh2 Bf1 15.Bg1 Ke4 16.Kg3 Kd5 17.Kf2 c5 18.Ke1 c4 19.Kd2 Ke4 20.Kc3 Bd3 21.Bb6 Kf3 22.Ba7 Kf4 23.Bd4
  -/+  (-1.17)   Depth: 27/48   00:00:59  494mN, tb=1187
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bc4 10.Bb4 g2 11.Bc5 Bf1 12.Bd6 Bd3 13.Bc5 Bc4 14.Kh2 Bf1 15.Bg1 Bd3 16.Bb6 Bf5 17.Kg1 Be6 18.Ba7 Bg8 19.Bc5 Bc4 20.Kh2
  -/+  (-1.17)   Depth: 28/48   00:01:30  766mN, tb=2638
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bc4 10.Bb4 g2 11.Bc5 Bf1 12.Bd6 Bd3 13.Bc5 Bb5 14.Bd4 Bf1 15.Bc5 Bd3 16.Bd6 Be2 17.Bc5 Bc4 18.Kh2 Bf1 19.Bg1 Bd3 20.Bb6 Bf5 21.Kg1 Be6 22.Ba7 Bg8 23.Bc5 Bc4 24.Kh2
  -/+  (-1.17)   Depth: 29/50   00:02:19  1198mN, tb=4603
1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 6.Bc5 g3 7.Ba3 Bh3 8.Bd6 Be6 9.Bc5 Bc4 10.Bb4 g2 11.Bc5 Bf1 12.Bd6 Bd3 13.Bc5 Bg6 14.Bd4 Bf5 15.Bb6 Be6 16.Ba7 Bd5 17.Kh2 Bc4 18.Kg1 Bf1 19.Bc5 Bd3 20.Bd6 Be2 21.Bc5 Bc4 22.Kh2 Bf1 23.Bg1 Bd3 24.Bb6 Bf5 25.Kg1 Be6
  -/+  (-1.17)   Depth: 30/50   00:03:33  1861mN, tb=7591
Parent - - By Kornrade (*) [de] Date 2012-02-16 16:37
Once again, 1.Bxb6 Nxh2+ 2.Kg1 Bxg2 3.Rxf4 Kg3 4.Rxf8 Nf3+ 5.Rxf3+ Kxf3 and black wins in 30 moves according to 6-men tablebase :)
This is not the solution.
Parent - - By Akbarfan (***) [de] Date 2012-02-17 00:32
1. Bxb6 Nxh2+ 2. Kg1 Bxg2 3. Kxg2!! f3+ 4. Kxh2 g3+ 5. Kg1!! gxf2+ 6. Kf1 and white hold his bishop on diagonal a7/e3
Parent - - By Kornrade (*) [ro] Date 2012-02-17 08:39
Correct. The study was published in Pat-a-Mat December issue.
1. Bxb6 Nxh2+ 2. Kg1 Bxg2 3. Kxg2!! {the correct capture...}
Not 3. Rxg2 Nf3+ 4. Kf1 g3 5. Rc2 c5 6. Bxc5 Bg7 7. Ra2 Kh3 8. Ba7 Bf6 9. Ra6 g2+ 10. Ke2 g1=Q 11. Bxg1 Nxg1+ Black wins in 44 moves (In this line, there are many tricks to be dodged by black as well...)
Not 3. Kxh2 g3+ 4. Kxg2 gxf2 and the stalemate tricks do not work any more...
Not 3. Rxf4 Kg3 4. Rxf8 Nf3+ 5. Rxf3+ Bxf3 Black wins in 29 moves
3... f3+ 4. Kxh2 g3+ 5. Kg1!! gxf2+ 6. Kf1!!
The following lines are just sample variations of how the draw works, and what should be avoided by White:
6... Kg4 7. Be3 Kf5 8. Ba7 Ke4 9. Bb6 Bg7 10. Bc5 Bd4 11. Bb6 Kd5 12. Ba7 Bc5 13. Bb6 Kc4 14. Bc7
Not 14. Ba7 Kd4 15. Bb8 Bb6 16. Bd6 Kd5 17. Bb4 Bc7 18. Ba3 Be5 19. Bb4 Bd6 20. Bd2 c5 21. Be3 c4 22. Kxf2 Ke4 Black wins in 14 moves
14... Kb5 15. Be5 Ba7 16. Bf6 {only move}
Not 16. Bd4 Bb6 17. Be3 Bc5 18. Bd4 Kc4 19. Be3 Bd4 20. Bg5 Kd5 21. Be7 Be5 22. Ba3 Bc7 23. Bb4 Bd6 24. Bd2 c5 25. Be3 c4 26. Kxf2 Ke4 Black wins in 14 moves
16... Kc4 17. Bd8 {only move} Kd5 18. Bb6 {only move} Bb8 19. Ba7 Bd6 20. Bb6 Bc5 {been here, done that already...} ½-½
Parent - By wajit (**) [us] Date 2012-03-05 21:02
This is strange my computer detects mate in 43 with 6 man bases.  But there is no mate.  Anyone else with 6 mans getting this problem?  Makes me wonder if my TB's are damage or its just an engine fluke.  This is Rybka 4.1 SSEX64.  The key to this endgame being a draw is sacking the bishop for the other bishop at c5 or potentially sacking for for the pawn at c5.  Very interesting game.  Seems that computers over eval the black side.  Havent checked this yet on houdini or other engines to see if they over eval black also.
Parent - - By Akbarfan (***) [de] Date 2012-03-05 22:11 Edited 2012-03-05 22:16
Black wins in all variations !!

[Event "?"]
[Site "?"]
[Date "2012.02.15"]
[Round "?"]
[White "Can Rybka solve this? part VI"]
[Black " "]
[Result " "]
[SetUp "1"]
[FEN "5b2/B7/1pp5/8/5ppk/5n1b/5RBP/5K2 w - - 0 1"]
[PlyCount "68"]

1. Bxb6 $1
(1. Rxf3 gxf3 2. Bxh3 Kxh3 3. Bxb6 c5 4. Kf2 c4)
(1. Bxh3 Kxh3 2. Bxb6 Nxh2+ 3. Kg1 Nf3+ 4. Kf1 c5)
1... Nxh2+ 2. Kg1 $1 Bxg2 3. Kxg2 $1
(3. Kxh2 $2 g3+ 4. Kxg2 gxf2 {and the stalemate trick does not work any more.}
5. Bxf2+ (5. Kxf2 Kg4 {21# EGTB})
(5. Bd4 Kg4 {22#} 6. Bb2 c5 7. Ba3 f1=Q+ 8. Kxf1 Kf3 {19# EGTB} 9. Bb2 c4)
5... Kg4 {21# EGTB})
(3. Rxf4 $2 Kg3 4. Rxf8 Nf3+ 5. Rxf3+ Kxf3 {31# EGTB})
(3. Rxg2 $2 Nf3+ 4. Kf1 g3 5. Rc2 c5 6. Bxc5 Bg7 7. Ra2 Kh3 8. Ba7 Bf6
9. Ra6 g2+ 10. Ke2 g1=Q 11. Bxg1 Nxg1+ {45# EGTB})
3... f3+ 4. Kxh2
(4. Kg1 g3 5. Rd2 c5 6. Bc7 f2+ 7. Rxf2 gxf2+ 8. Kxf2 Ng4+ {28# EGTB})
4... g3+ 5. Kg1 $1
(5. Kh1 $2 gxf2 6. Bxf2+ Kg4 {20# EGTB})
5... gxf2+ 6. Kf1 $1
(6. Kxf2 $2 Kg4 {20#})
6...Kg4 7. Be3 Kf5 8. Bd4 Ke4 9. Bb6 Bg7 10. Bc5 Bd4 11. Bb6 Kd5 12. Ba7 Bc5
(12... Bb2 13. Bb6 Bf6 14. Ba7 Kc4 15. Bb6 Be7 16. Ba7 Bc5 17. Bb6 Kb5 18. Bc7 Bb6
19. Bd6 Kc4 20. Bb8 Kd4 21. Bh2 Kd5 22. Bd6 Ba5 23. Ba3 Bc3 24. Bf8 Be5 25. Ba3 Bc7
26. Be7 Bd6 27. Bh4 c5 28. Kxf2 Ke4 {17# EGTB} 29. Ke1 c4 30. Kd2 Be5)
13. Bb6 Kc4 14. Bc7
(14. Ba7 $2 Kd4 15. Bb8 Bb6 16. Bd6 Kd5 17. Bb4 Bc7 18. Ba3 Be5 19. Bb4 Bd6 {A} 20. Bd2 c5
21. Be3 c4 22. Kxf2 Bc5 {19# EGTB})
14... Kb5 15. Be5 Ba7 16. Bf6
(16. Bd4 Bb6 17. Be3 Bc5 18. Bd4 Kc4 19. Be3 Bd4 20. Bg5 Kd5 21. Be7 Be5 22. Ba3 Bc7 23. Bb4 Bd6 {A})
16... Kc4 17. Bd8 $8 Kd5 18. Bb6 Bb8 19. Ba7 Bd6 20. Bb6 Bc5 21. Bd8 Bf8 22. Bb6 Kc4
23. Be3 Bd6 24. Bg5 Kd5 25. Be3 Bc5 26. Bh6 Bd4 27. Bf8 Be5 28. Ba3 Bc7 29. Bb4 Bd6
30. Bc3 c5 31. Kxf2 Ke4 {17# EGTB} 32. Bb2 c4 33. Bc3 Be5 34. Bxe5 Kxe5

Parent - - By Kornrade (*) [ro] Date 2012-03-06 09:57
I kindly disagree...

I don't see the reason why you chose to abandon the key diagonal a7-g1 at move 24.
How does Black make progress after 24.Bb6? [24.Bb6 Bc5 25.Bc7 see mainline at move 14...]

Here are my principles to guide the defense:
- Switching the defense mechanism to the diagonal a3-f8 does not work. (you already demonstrated that)
- The key diagonal is abandoned only if it is absolutely necessary, and for re-routing to it (see mainline, moves 13..18)
- Keep the white bishop on the far side of the key diagonal (a7 and b6) as much as possible.

If you find other play for Black, let me know :)
Parent - - By Akbarfan (***) [de] Date 2012-03-06 19:42
After 24.Bb6 follows Bb4!

8/8/1Bp5/8/1bk5/5p2/5p2/5K2 w - - 0 1

Analysis by Critter 1.4 64-bit:
Depth=39/51

1. -+  (-#31): 25.Bc7 Kb5 26.Kxf2 c5 27.Be5 Ka4 28.Kxf3
2. -+  (-#31): 25.Bd8 Kb5 26.Kxf2 c5 27.Bf6 c4 28.Be5 Ka4 29.Kxf3 Kb3 30.Ke2 Be7 31.Kd2 Bg5+ 32.Ke2 c3
3. -+  (-#30): 25.Ba7 Bc5 26.Bb6 Kb5 27.Bc7 Bb6 28.Bb8 c5 29.Kxf2 c4+ 30.Kxf3 c3 31.Ke2 Kc4 32.Bf4 Bc5 33.Kd1 Kd3
4. -+  (-#27): 25.Be3 Bc5 26.Bf4 Bb6 27.Bb8 Kd4 28.Bf4 Kd5 29.Bg5 Bd4 30.Be7 Be5 31.Ba3 Bc7 32.Kxf2 Ke4 33.Bc5 Be5 34.Be7 Bd4+

[Event "?"]
[Site "?"]
[Date "2012.02.15"]
[Round "?"]
[White "Can Rybka solve this? part VI"]
[Black " "]
[Result " "]
[SetUp "1"]
[FEN "5b2/B7/1pp5/8/5ppk/5n1b/5RBP/5K2 w - - 0 1"]
[PlyCount "68"]

1. Bxb6 $1 (1. Rxf3 gxf3 2. Bxh3 Kxh3 3. Bxb6 c5 4. Kf2 c4) (1. Bxh3 Kxh3 2. Bxb6 Nxh2+ 3. Kg1
Nf3+ 4. Kf1 c5) 1... Nxh2+ 2. Kg1 $1 Bxg2 3. Kxg2 $1 (3. Kxh2 $2 g3+ 4. Kxg2
gxf2 {and the stalemate trick does not work any more.} 5. Bxf2+ (5. Kxf2 Kg4 {
21# 6St.}) (5. Bd4 Kg4 {22#} 6. Bb2 c5 7. Ba3 f1=Q+ 8. Kxf1 Kf3 {19# 6St.} 9.
Bb2 c4) 5... Kg4 {21# 6St.}) (3. Rxf4 $2 Kg3 4. Rxf8 Nf3+ 5. Rxf3+ Kxf3 {31#
6St.}) (3. Rxg2 $2 Nf3+ 4. Kf1 g3 5. Rc2 c5 6. Bxc5 Bg7 7. Ra2 Kh3 8. Ba7 Bf6
9. Ra6 g2+ 10. Ke2 g1=Q 11. Bxg1 Nxg1+ {(45# 6St.) Black wins in 44 moves
(In this line, there are many tricks to be dodged by black as
well...)}) 3... f3+ 4. Kxh2 ({Critter 1.4 64-bit:} 4. Kg1 g3 5. Rd2 c5 6.
Bc7 f2+ 7. Rxf2 gxf2+ 8. Kxf2 Ng4+ {28# 6st.}) 4... g3+ 5. Kg1 $1 (5. Kh1 $2
gxf2 6. Bxf2+ Kg4 {20# 6St.}) 5... gxf2+ 6. Kf1 $1 (6. Kxf2 $2 Kg4 {20#}) 6...
Kg4 {The following lines are just sample variations of how the draw works, and
what should be avoided by White:} 7. Be3 Kf5 8. Bd4 Ke4 9. Bb6 Bg7 10. Bc5 Bd4
11. Bb6 Kd5 12. Ba7 Bc5 ({Critter 1.4 64-bit:} 12... Bb2 13. Bb6 Bf6 14. Ba7
Kc4 15. Bb6 Be7 16. Ba7 Bc5 {B} 17. Bb6 Kb5 18. Bc7 Bb6 19. Bd6 Kc4 20. Bb8 Kd4
21. Bh2 Kd5 22. Bd6 Ba5 23. Ba3 Bc3 24. Bf8 Be5 25. Ba3 Bc7 26. Be7 Bd6 27. Bh4
c5 28. Kxf2 Ke4 {17# 6st.} 29. Ke1 c4 30. Kd2 Be5) 13. Bb6 Kc4 14. Bc7 (14. Ba7
$2 Kd4 15. Bb8 Bb6 16. Bd6 Kd5 17. Bb4 Bc7 18. Ba3 Be5 19. Bb4 Bd6 {A} 20. Bd2
c5 21. Be3 c4 22. Kxf2 Bc5 {19# 6St.}) 14... Kb5 15. Be5 Ba7 16. Bf6 $8 (16.
Bd4 Bb6 17. Be3 Bc5 18. Bd4 Kc4 19. Be3 Bd4 20. Bg5 Kd5 21. Be7 Be5 22. Ba3 Bc7
23. Bb4 Bd6 {A}) 16... Kc4 17. Bd8 $8 Kd5 18. Bb6 $8 Bb8 19. Ba7 Bd6 20. Bb6
Bc5 21. Bd8 Bf8 22. Bb6 Kc4 23. Be3 Bd6 24. Bg5 (24. Bb6 Bb4 $1 (24... Be7 25. Bc7
Kb5 26. Kxf2 c5 {31# 6St.}) 25. Ba7 (25. Bd8 Kb5 26. Kxf2 c5 {30# 6St.})
(25.Bc7 Kb5 26.Kxf2 c5 {30# 6St.})
25...Bc5 {B}) 24... Kd5 25. Be3 Bc5 26. Bh6 Bd4 27. Bf8 Be5 28. Ba3 Bc7 29. Bb4 Bd6
30. Bc3 c5 31. Kxf2 Ke4 {17# 6st.} 32. Bb2 c4 33. Bc3 Be5 34. Bxe5 Kxe5 0-1
Parent - - By Kornrade (*) [ro] Date 2012-03-08 10:39
Ok, it seems I need to have a closer look at what is happening... unfortunately, time is scarce these months for me...
Until I find something to improve on the variations, I acknowledge your analysis :) Thanks for the effort.
Parent - By MoKy (**) [sk] Date 2012-06-04 16:09 Edited 2012-06-04 19:20
Drawish mechanism translated to human language:
A black enforces c5
B white king takes f2
C black king covers f3
D white bishop pins c5
E white holds the pin with tempo moves

In the next position white bishop has only a3-square
8/8/3b4/2p5/4k3/B4p2/5K2/8 b - -

1...Bf8 zugzwang -+

If you shift last position one column to the right, then it works fine

[FEN "8/8/2Bpb3/8/8/6pk/6p1/6K1 w - -"]

1. Bd5 Bf5 2. Be4 Kg4 3. Bd5 Kf4 4. Bc6 Be4 5. Bd5 Ke5 6. Bc6 Bd5 7. Bb7 Ke4
8. Bc8 Bc6 9. Be6 Ke5 10. Bb3 Bd7 11. Ba2 {!} Be6 12. Bb1 d5 {A} 13. Kxg2 {B}
Kf4 {C} 14. Ba2 {!} {D} Bg8 15. Bb3 {E} Bf7 16. Ba2 {=} *
Parent - - By jokerb [gb] Date 2012-08-12 00:13
why would white play 23.Be3? (eval jumped from +2.91 to 6.04 - 23.Be3 Bc5 24.Bf4 )? I don't see any progress after 23.Bd8.
Parent - - By Akbarfan (***) [de] Date 2012-08-12 19:54 Edited 2012-08-12 19:56

> I don't see any progress after 23.Bd8.


3B1b2/8/2p5/8/2k5/5p2/5p2/5K2 b - - 0 23

Analysis by Critter 1.6a 64-bit:

1. -+  (-#32): 23...Kb5 24.Lf6 c5 25.Kxf2 Kc4 26.Ke3 Kb3 27.Kxf3 c4 28.Ke4 Lb4 29.Ld4 Lc3 30.Lf2 Lb2 31.Le1 La3 32.Ld2 Lb4 33.Lc1 c3 34.Kd4 Ld6 35.Le3 La3 36.Lf4 c2 37.Ld2 Ka2 38.Le3 Kb1 39.Kc4 Lc1 40.Lc5 Ld2 41.La3 Lf4 42.Kb3 Le5 43.Ka4 Lb2 44.Lc5 c1D 45.Kb5 La3 46.Lxa3 Dxa3 47.Kc6 Dd3 48.Kb6 Dd7 49.Kc5 De6 50.Kb4 Dd5 51.Ka3 Dd4 52.Kb3 Kc1 53.Ka3 Kc2 54.Ka2 Db2#
2. -+  (-#35): 23...Ld6 24.Lb6 Le7 25.La7 Lc5 26.Lb6 Kb5 27.Ld8 Lb4 28.Kxf2 c5 29.Le7 c4 30.Lf6 Ka4 31.Kxf3 Kb3 32.Ke4 Lc3 33.Lh4 Lb2 34.Le1 La3 35.Ld2 Lb4 36.Lc1 c3 37.Kd4 Ld6 38.Le3 La3 39.Lf4 c2 40.Ld2 Ka2 41.Le3 Kb1 42.Kc4 Lc1 43.Lc5 Ld2 44.La3 Lf4 45.Kb3 Le5 46.Ka4 Lb2 47.Lc5 c1D 48.Kb5 La3 49.Lxa3 Dxa3 50.Kc6 Dd3 51.Kb6 Dd7 52.Kc5 De6 53.Kb4 Dd5 54.Ka3 Dd4 55.Kb3 Kc1 56.Ka3 Kc2 57.Ka2 Db2#
3. -+  (-#37): 23...Lg7 24.Lb6 Le5 25.Ld8 Lc3 26.Lb6 Lb4 27.La7 Lc5 28.Lb6 Kb5 29.Ld8 Lb4 30.Kxf2 c5 31.Le7 c4 32.Lf6 Ka4 33.Kxf3 Kb3 34.Ke4 Lc3 35.Lh4 Lb2 36.Le1 La3 37.Ld2 Lb4 38.Lc1 c3 39.Kd4 Ld6 40.Le3 La3 41.Lf4 c2 42.Ld2 Ka2 43.Le3 Kb1 44.Kc4 Lc1 45.Lc5 Ld2 46.La3 Lf4 47.Kb3 Le5 48.Ka4 Lb2 49.Lc5 c1D 50.Kb5 La3 51.Lxa3 Dxa3 52.Kc6 Dd3 53.Kb6 Dd7 54.Kc5 De6 55.Kb4 Dd5 56.Ka3 Dd4 57.Kb3 Kc1 58.Ka3 Kc2 59.Ka2 Db2#
4. -+  (-#37): 23...Kb3 24.Lb6 Kb4 25.Ld4 Kc4 26.Lb6 Le7 27.La7 Lc5 28.Lb6 Kb5 29.Ld8 Lb4 30.Kxf2 c5 31.Le7 c4 32.Lf6 Ka4 33.Kxf3 Kb3 34.Ke4 Lc3 35.Lh4 Lb2 36.Le1 La3 37.Ld2 Lb4 38.Lc1 c3 39.Kd4 Ld6 40.Le3 La3 41.Lf4 c2 42.Ld2 Ka2 43.Le3 Kb1 44.Kc4 Lc1 45.Lc5 Ld2 46.La3 Lf4 47.Kb3 Le5 48.Ka4 Lb2 49.Lc5 c1D 50.Kb5 La3 51.Lxa3 Dxa3 52.Kc6 Dd3 53.Kb6 Dd7 54.Kc5 De6 55.Kb4 Dd5 56.Ka3 Dd4 57.Kb3 Kc1 58.Ka3 Kc2 59.Ka2 Db2#
Parent - - By CSullivan (**) [us] Date 2012-09-11 15:08
For what it's worth, my analysis says that Akbarfan is right about the starting position -- Black wins.
Charles
Parent - - By Akbarfan (***) [de] Date 2012-09-11 18:48
..
Parent - By wajit (**) [us] Date 2012-11-27 22:48
I concur with Akbar.  After playing only the first 6 moves of his analysis and i have 6 man TB's Houdini3 pro finds mate in 52 in 25 seconds. So there is no way white is going to draw this.  I'm pretty sure it will mate much sooner than that but dialing in a checkmate. Nice try though :)
Up Topic The Rybka Lounge / Test Positions / Can Rybka solve this? part VII

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