Author: Dann Corbit
Date: 12:42:52 05/19/99
Go up one level in this thread
On May 19, 1999 at 14:34:15, Francis Monkman wrote:
>Here's a nice position arrived at 'not entirely by chance', from a game
>Raicevic-Suba, Novi Sad 1974.
>
>4r1k1/pbpp1ppp/1b4q1/5n2/3P3r/2Q1PP1N/PP4PP/R1BB1R1K b - -
>
>Black is clearly winning after ...Qh6 e4 Ng3+, when hxg3 loses to
>...Rxh3, or Kg1 to ...Qd6. (In fact, the game went ...Qe6 Bb3 Qh6 etc.)
>
>Most engines play ...Qh6, although seeing no better than a draw after
>5 minutes or so (presumably the usual 'perpetual check' loop). One
>or two, somewhat endearingly, prefer the text move, while CSTal II
>likes ...Re6, one or two like ...Ba6. Hiarcs 7 refuses to load the
>position without an answer! Any program find its way through the 'draw
>trap' (inside 5 mins or so), and play ...Qh6 for the 'right reasons'?
Crafty (run on low priority) sees a one half pawn advantage to Qh6. Nothing to
rave about. Are you sure it's a clear win?
4r1k1/pbpp1ppp/1b4q1/5n2/3P3r/2Q1PP1N/PP4PP/R1BB1R1K b - - acd 12; acn
119896510; acs 1008; ce 46; pv Qh6 Re1 Rxh3 gxh3 Qxh3 Qc2 Qh4 Qd2 Bxd4 e4 Bd5
Be2;
Here is the log:
5 0.98 -0.20 1. ... a5 2. Rf2 Qd6 3. Qd3 Re5
5-> 1.25 -0.20 1. ... a5 2. Rf2 Qd6 3. Qd3 Re5
6 1.85 -0.50 1. ... a5 2. Bb3 Bc6 3. Bc4 d5 4. Nf4
6 2.35 ++ 1. ... Qe6!!
6 2.53 0.53 1. ... Qe6 2. Bb3 Qe7 3. Ba4 Nxe3 4.
Bxe3 Qxe3 5. Bxd7 Bxd4 6. Qxc7
6-> 2.93 0.53 1. ... Qe6 2. Bb3 Qe7 3. Ba4 Nxe3 4.
Bxe3 Qxe3 5. Bxd7 Bxd4 6. Qxc7
7 3.29 -- 1. ... Qe6
7 4.28 -0.13 1. ... Qe6 2. Bb3 Qe7 3. e4 Bxd4 4.
Qxc7 Ba6
7-> 8.25 -0.13 1. ... Qe6 2. Bb3 Qe7 3. e4 Bxd4 4.
Qxc7 Ba6
8 10.32 0.00 1. ... Qe6 2. Bb3 Qh6 3. e4 Ng3+ 4.
hxg3 Rxh3+ 5. gxh3 Qxh3+ 6. Kg1 Qxg3+
7. Kh1 Qh3+ 8. Kg1 Qg3+
8-> 13.92 0.00 1. ... Qe6 2. Bb3 Qh6 3. e4 Ng3+ 4.
hxg3 Rxh3+ 5. gxh3 Qxh3+ 6. Kg1 Qxg3+
7. Kh1 Qh3+ 8. Kg1 Qg3+
9 17.58 0.00 1. ... Qe6 2. Bb3 Qh6 3. e4 Ng3+ 4.
hxg3 Rxh3+ 5. gxh3 Qxh3+ 6. Kg1 Qxg3+
7. Kh1 Qh3+ 8. Kg1 Qg3+
9-> 34.68 0.00 1. ... Qe6 2. Bb3 Qh6 3. e4 Ng3+ 4.
hxg3 Rxh3+ 5. gxh3 Qxh3+ 6. Kg1 Qxg3+
7. Kh1 Qh3+ 8. Kg1 Qg3+
10 48.62 0.00 1. ... Qe6 2. Bb3 Qh6 3. e4 Ng3+ 4.
hxg3 Rxh3+ 5. gxh3 Qxh3+ 6. Kg1 Qxg3+
7. Kh1 Qh3+ 8. Kg1 Qg3+
10-> 2:02 0.00 1. ... Qe6 2. Bb3 Qh6 3. e4 Ng3+ 4.
hxg3 Rxh3+ 5. gxh3 Qxh3+ 6. Kg1 Qxg3+
7. Kh1 Qh3+ 8. Kg1 Qg3+
11 2:46 0.00 1. ... Qe6 2. Bb3 Qh6 3. e4 Ng3+ 4.
hxg3 Rxh3+ 5. gxh3 Qxh3+ 6. Kg1 Qxg3+
7. Kh1 Qh3+ 8. Kg1 Qg3+
11 6:17 ++ 1. ... Qh6!!
11 6:52 0.58 1. ... Qh6 2. Re1 Rxh3 3. gxh3 Qxh3
4. Qc2 Ba5 5. Rg1 Bxf3+ 6. Bxf3 Qxf3+
7. Qg2 Qxg2+ 8. Kxg2 Nxe3+ 9. Kf3
11-> 9:33 0.58 1. ... Qh6 2. Re1 Rxh3 3. gxh3 Qxh3
4. Qc2 Ba5 5. Rg1 Bxf3+ 6. Bxf3 Qxf3+
7. Qg2 Qxg2+ 8. Kxg2 Nxe3+ 9. Kf3
12 11:13 0.46 1. ... Qh6 2. Re1 Rxh3 3. gxh3 Qxh3
4. Qc2 Qh4 5. Qd2 Bxd4 6. e4 Bd5 7.
Be2
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