Author: Robert Hyatt
Date: 05:21:13 05/21/98
Go up one level in this thread
On May 21, 1998 at 07:01:18, Georg Langrath wrote:
>6k1/8/p3r2p/1p1pPpp1/1n1pP3/1Pq4P/PR4PB/3QN1K1 b
>
>This epd-file represents a position between Spassky-Tal 1959. Spassky
>took the rook 1 Dxb2, and who hadn t. But this is wrong. Even if you
>play white with a weaker chessprogram against black with a stronger one,
>white wins after that move.. The best move is 1 dxe4. On the opposite,
>here a weaker black program always wins over a stronger black program
>after that move.
>
>I wrote about the position in PLY (SSDF) about eight years ago. Even the
>strongest chessprograms didn t find the right move in those days. Not
>even in analyze for a week or so. Does you program find it? Rebel9 find
>it in analyze, but not in 3 minutes on my computer (Pentium 133).
>
>But Fritz 5 find the right move in about 10 seconds, and doesn t change
>its mind then! Nearly unbelievable.
>
>I have tested Fritz5 on the selfgoing update, and now I have ordered it.
>Perhaps Chessbase shouldn t be in a such hurry to put it away, when they
>found that it was possible to make it selfgoing. (You have to put two
>files to it from Cblight only).
>
>Not only I had buyed it after testing it, I think.
>
>Georg
This seems easy for today's programs, if they have the right kind of
evaluation:
depth time score variation (1)
starting thread 1
starting thread 2
starting thread 3
1 0.01 0.09 1. ... Qxb2 2. exf5
1-> 0.01 0.09 1. ... Qxb2 2. exf5
2 0.01 0.09 1. ... Qxb2 2. exf5
2-> 0.01 0.09 1. ... Qxb2 2. exf5
3 0.02 -0.08 1. ... Qxb2 2. exf5 Rc6
3-> 0.02 -0.08 1. ... Qxb2 2. exf5 Rc6
4 0.03 ++ 1. ... Qxb2!!
4 0.03 0.89 1. ... Qxb2 2. exf5 Rc6 3. Qg4 Qxa2
4-> 0.04 0.89 1. ... Qxb2 2. exf5 Rc6 3. Qg4 Qxa2
5 0.04 0.89 1. ... Qxb2 2. exf5 Rc6 3. Qg4 Qxa2
5-> 0.09 0.89 1. ... Qxb2 2. exf5 Rc6 3. Qg4 Qxa2
6 0.10 -- 1. ... Qxb2
6 0.12 0.64 1. ... Qxb2 2. exf5 Rc6 3. e6 Qxa2
4. e7 Rc8
6-> 0.15 0.64 1. ... Qxb2 2. exf5 Rc6 3. e6 Qxa2
4. e7 Rc8
7 0.22 0.78 1. ... Qxb2 2. exf5 Rc6 3. Qh5 Kf8
4. e6 Qxa2
7-> 0.31 0.78 1. ... Qxb2 2. exf5 Rc6 3. Qh5 Kf8
4. e6 Qxa2
8 0.37 -- 1. ... Qxb2
8 0.58 0.13 1. ... Qxb2 2. exf5 Re7 3. a4 Rf7 4.
g4 bxa4 5. bxa4 d3
8-> 1.42 0.13 1. ... Qxb2 2. exf5 Re7 3. a4 Rf7 4.
g4 bxa4 5. bxa4 d3
9 1.61 0.19 1. ... Qxb2 2. exf5 Re7 3. a4 Rf7 4.
g4 Qc3 5. e6 Rf6
9 3.33 0.29 1. ... dxe4 2. Qd2 Qxd2 3. Rxd2 d3
4. a3 Nc6 5. Kf2 Kf7 6. Ke3 Nxe5
9-> 4.00 0.29 1. ... dxe4 2. Qd2 Qxd2 3. Rxd2 d3
4. a3 Nc6 5. Kf2 Kf7 6. Ke3 Nxe5
10 6.01 0.21 1. ... dxe4 2. Rd2 d3 3. Kh1 Re7 4.
a3 e3 5. Nf3 e2 6. Qe1 Nd5
10-> 8.68 0.21 1. ... dxe4 2. Rd2 d3 3. Kh1 Re7 4.
a3 e3 5. Nf3 e2 6. Qe1 Nd5
11 13.83 0.42 1. ... dxe4 2. Rd2 d3 3. h4 Re7 4.
hxg5 e3 5. Rxd3 Nxd3 6. Nxd3 hxg5
11-> 19.32 0.42 1. ... dxe4 2. Rd2 d3 3. h4 Re7 4.
hxg5 e3 5. Rxd3 Nxd3 6. Nxd3 hxg5
12 37.43 0.40 1. ... dxe4 2. Qd2 Qxd2 3. Rxd2 d3
4. a3 Nc6 5. Nxd3 exd3 6. Rxd3 Nxe5
7. Bxe5 Rxe5 8. Rd7
12-> 59.54 0.40 1. ... dxe4 2. Qd2 Qxd2 3. Rxd2 d3
4. a3 Nc6 5. Nxd3 exd3 6. Rxd3 Nxe5
7. Bxe5 Rxe5 8. Rd7
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