Author: Kolss
Date: 03:45:15 05/08/03
Go up one level in this thread
On May 07, 2003 at 04:40:43, Enrique Irazoqui wrote:
>King majority wins in this game Pitschak - Foerder played in 1930.
>
>[D]1R6/p3k1p1/7p/2b1pP2/P1r3P1/B7/7P/7K w - - 0 1
>
>1.Rc8! Kd6 2.Rxc5! Rxc5 3.h4!+- 1-0
>
>Enrique
Hi,
I remember that this position has been posted a while ago.
Ikarus (V0.31) does quite well on this one, I don't know about the performance
of older versions (I did not check V0.18, for example). Here is the output on my
slow computer (K6/2, 475 MHz, 8 MB Hash, 5-man-TBs):
8 0 +1.21 1. Bxc5+ Rxc5 2. Rb7+ Kf6 3. Rxa7 h5 4. gxh5 e4 5. a5
Rxf5
8 0 +1.34 1. Rb7+ Kf6 2. Rc7 Rxg4 3. Bxc5 Rxa4 4. Bf8 Rg4 5. Rxa7
8 1 +1.50 1. Rc8 Kd6 2. Bxc5+ Rxc5 3. Rxc5 Kxc5 4. h4 Kd4 5. g5
9 1 +1.49 1. Rc8 Kd6 2. Bxc5+ Rxc5 3. Rxc5 Kxc5 4. h4 Kd5 5. g5 e4
10 2 +1.59 1. Rc8 Kd6 2. Bxc5+ Rxc5 3. Rxc5 Kxc5 4. h4 Kd5 5. g5
hxg5
6. hxg5 e4
11 3 +1.68 1. Rc8 Kd6 2. Rxc5 Rxc5 3. h4 e4 4. g5 e3 5. Kg2 e2
6. Bxc5+ Kxc5 7. Kf2
12 6 +1.68 1. Rc8 Kd6 2. Rxc5 Rxc5 3. h4 Kd5 4. Bxc5 Kxc5 5. Kg2 Kd5
6. g5 e4
13 12 +1.78 1. Rc8 Kd6 2. Rxc5 Rxc5 3. h4 e4 4. g5 e3 5. Kg2 hxg5
6. hxg5 e2 7. Bxc5+ Kxc5
14 21 +1.86 1. Rc8 Kd6 2. Rxc5 Rxc5 3. h4 e4 4. g5 e3 5. Kg2 hxg5
6. hxg5 e2 7. Bxc5+ Kxc5 8. Kf2
15 42 +1.83 1. Rc8 Kd6 2. Rxc5 Rxc5 3. h4 e4 4. g5 e3 5. Kg2 Kd5
6. Bxc5 Kxc5 7. f6 e2
16 109 +2.17 1. Rc8 Kd6 2. Rxc5 Rxc5 3. h4 e4 4. g5 e3 5. Kg2 hxg5
17+ 266 +2.53 1. Rc8! Kd6 2. Rxc5 Rxc5 3. h4 e4 4. g5 e3 5. Kg2 hxg5
6. Bxc5+ Kxc5 7. f6
17 1889 +2.80 1. Rc8 Rc3 2. Bxc5+ Kd7 3. Rg8 Rxc5 4. Rxg7+ Kd6 5. Rxa7
e4 6. f6 Rc8 7. Kg2
So it plays the correct move after 1 second, has the correct PV after 3 seconds,
and shows a "reasonable" score after 109 seconds. In ply 17 (after ~30 minutes),
black gives away the exchange to avoid worse, but that seems like resigning.
Best regards, Munjong.
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