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Subject: Re: YAEP

Author: Andrew Williams

Date: 03:05:17 07/26/00

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On July 26, 2000 at 01:12:05, Steffen Jakob wrote:

>Here is yet another endgame position:
>
>[D]3R4/8/6p1/p1p2bk1/P1Pb4/1P5P/6B1/7K w
>
>It's from a game MissSilicon (nut) - Hossa. Misssi found the nice move b4!
>Andrew Dados told me that his program needs about 14 seconds (Andrew, do I
>remember right?) to find this move. I tried it with Hossa and it took ages. How
>does your favourite program perform? And another important question: is there
>another way to win this position for white?
>
>Best wishes,
>Steffen.


PostModernist found b4 in 20 seconds on a PIII-450:

11=   316     8    665427   1. Ra8 Bc3 2. Re8 Bd4 3. Re2 Kh4 4. Kh2 g5 5. Re8 g4
12>   316    20   1518797   1. b4 axb4 2. a5
12=   332    29   2277858   1. b4 axb4 2. a5 b3 3. a6 b2 4. Rb8 Bc3 5. Rxb2 Bxb2
6. a7 Be4 7. Bxe4
13>   332    36   2807098   1. b4 Bf6 2. Rf8 cxb4 3. h4 Kxh4 4. Rxf6 b3 5. Rb6
Bc2 6. Rb5 b2
13=   349    76   6389302   1. b4 Bf6 2. Rf8 cxb4 3. h4 Kxh4 4. Rxf6 b3 5. Rb6
Bc2 6. Kh2 b2 7. Rxb2 Bxa4
14>   344   158  12409934   1. b4 Bf6 2. Rf8 cxb4 3. h4 Kxh4 4. Rxf6 Bc2 5. c5
b3 6. Rb6
14=   348   166  13177204   1. b4 Bf6 2. Rf8 cxb4 3. h4 Kxh4 4. Rxf6 Bc2 5. c5
b3 6. Rb6
15>   348   211  16306566   1. b4 Bf6 2. Rf8 cxb4 3. h4 Kxh4 4. Rxf6 Bc2 5. c5
b3 6. Rb6
15=   349   557  40382885   1. b4 Bf6 2. Rf8 cxb4 3. h4 Kxh4 4. Rxf6 Bc2 5. c5
b3 6. Rb6

NODES per second 71600

Andrew Williams



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