Author: Jeremiah Penery
Date: 01:56:05 05/01/99
Go up one level in this thread
On April 30, 1999 at 18:38:28, Enrique Irazoqui wrote:
>Can someone check the 5 positions below? I like them quite a lot and I have not
>seen them solved by any program I tried.
I will let these all run longer to resolve the fail-highs and try to find the
win (draw?) for all of them.
>8/2pp1p2/1p6/1kPP4/5Pp1/8/6PP/5K2 w - - 0 1
>{'Fritz 5.32-192MB/PentiumII-400/256' >900s} 1. c6 $3 (1. h4 $2 gxh3 2. gxh3 (
Does this mean that either c6 or h4 are acceptable solutions?
My latest modification of Crafty finds this in tournament time:
------------------
16-> 2:24 -1.56 1. c61 (The 1 on the end is an output bug)
17 2:45 -1.93 1. c6 d6 2. h4 gxh3 3. gxh3 Kc5 4.
Ke2 Kxd5 5. h4 Ke6 6. h5 Kf6 7. Ke3
Kg7 8. Kf3 Kh6 9. Kg4 d5
17-> 3:17 -1.93 1. c6 d6 2. h4 gxh3 3. gxh3 Kc5 4.
Ke2 Kxd5 5. h4 Ke6 6. h5 Kf6 7. Ke3
Kg7 8. Kf3 Kh6 9. Kg4 d5
18 3:50 -2.12 1. c6 dxc6 2. h4 gxh3 3. gxh3 Kc5 4.
dxc6 Kxc6 5. Ke2 Kd5 6. h4 b5 7. h5
Ke6 8. Ke3 Kf5 9. Kf3 Kf6 10. Ke4 b4
The score improves to -1.75 at ply 19, still under 10 minutes.
>8/1k4p1/3pP3/pP5P/8/8/1r5P/3K4 w - - 0 1
>1. h6 $1 gxh6 2. e7 Rb1+ 3. Kd2 Rb2+ 4. Kd3 Rb3+ 5. Kd4 Rb4+ 6. Kd5 Rxb5+ 7.
Would play the move in 3 minutes, but did not resolve the fail-high in under 20
minutes, so I went on to the next position.
>4R3/P7/2bB2p1/r3pk2/2p2p1P/2P2P1K/6P1/8 w - - 0 54
>54. Rxe5+ $1 Rxe5 55. Bxe5 Kxe5 (55... Bb7 56. Bc7 Bc6 {and Black has no
This ran a while, but was not found.
>8/3kP3/3br1P1/6P1/7K/8/8/7B w - - 0 1
>1. Bc6+ $1 Kxe7 2. Bd5 (2. g7 Rg6 3. Bd5 Rxg7 4. Kh5 Kf8 $19) 2... Rxg6 3. Kh5
This was not found in 3 hours.
>6k1/6p1/7p/1P1P4/4q3/1r5P/6P1/3R1Q1K w - - 0 1
>1. d6 {'!!'} 1... Rxh3+ 2. Kg1 Qe3+ {'[]'} 3. Qf2 Rh1+ 4. Kxh1 Qxf2 {Q 2/m4} 5.
Fails high on d6 in about 12 minutes (depth 12). I didn't wait for it to
resolve, however.
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