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Subject: Re: Consensual positional problem set.

Author: Ernst A. Heinz

Date: 02:28:40 12/19/97

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On December 13, 1997 at 18:17:49, Enrique Irazoqui wrote:
>
>I had a very similar idea a few months ago. As a result I have a
>positional test of 24 problems, all from great grandmaster games and all
>commented by grandmasters. I discarded positions with solutions not
>found by any programs. The main difference with your proposal is that
>instead of 30 minutes I used only 5, more or less the average amount of
>time in games played at 40:2.
>
>The test has been posted on CCR under the name "CCR Test", with results
>on a P200MMX/64. Below I post the global results of some programs and
>the test set. Please tell me what you think of it.
>
>Rebel 8/9          17
>Hiarcs 6           16
>Mchess 6           16
>Rebel 6            16
>Mchess 7           15
>Fritz 5            13
>Genius 5           12
>Shredder 1         11
>Fritz 4            10
>CM5K               10
>
>24 positions:
>
>2br2k1/5pp1/1p3q1p/2pBpP2/2P1P3/P6P/2Q3P1/5RK1 w - -    ; Qa4
>r1b2rk1/1p3pp1/pn3n1p/2q1p3/P3P3/2N2N2/BP1RQPPP/3R2K1 w - -    ; Qe3
>4rbk1/ppp2ppp/2qprn2/8/3QP3/1PN1R3/PBP2PPP/4R1K1 w - -    ; h3
>r2qk2r/4bppp/p1bp1n2/1p2pP2/4P3/1BNQ4/PPP3PP/R1B2RK1 w qk -    ; Bg5
>r1bq2k1/4n1b1/p2p2p1/Pp1Pp2p/1N2P3/1NR3PP/1P3QB1/4K3 w - -    ; Qb6
>r4rk1/ppq1bppp/3pbn2/4p3/4PP2/2N1B3/PPP1B1PP/R3QRK1 w - -    ; f5
>4r1k1/1p1rq1pp/2p1p3/p1P1Ppb1/P2P4/1PNR1QP1/6KP/3R4 w - -    ; Nb1
>2rq2rk/1p1bbp1p/p1Nppp2/8/4PP2/2N2B2/PPP3PP/R2Q1R1K b - -    ; bxc6
>r1bqnrk1/p4ppp/1pnpp3/2p5/2PPP3/P1PBB3/4NPPP/R2Q1RK1 b - -    ; Na5
>2r3k1/1q2ppbp/p5p1/1p1P4/4P3/3Q3P/P2B1PP1/2R3K1 w - -    ; Rc6
>1r4k1/p1rqn1p1/Ppn1p2p/1B1pPp2/1P1P1P2/2R1QN2/6PP/2R3K1 w - -; R1c2
>r3r1k1/pp1q1pp1/2bb1nnp/3pp3/8/1P1PNNP1/PBR1PPBP/Q1R3K1 w - - ; d4
>1r1r2k1/p4pp1/2bppq1p/2p5/2P5/1P1BP3/P1QR1PPP/3R2K1 b - -    ; Qe5
>r4rn1/pp3pkp/3q2p1/1b1pN3/3P4/5N2/PP1Q1PPP/2R1R1K1 w - -    ; Qa5
>2r2rk1/1p1qppbp/1n1n2p1/pN1P4/P7/BP4PP/4QPB1/2R2RK1 w - - ; Bxd6
>rn1qk2r/p2pppbp/1p3np1/8/2PN4/2N3P1/PP2PPKP/R1BQ1R2 b qk -    ; Qc8
>5k2/1p1r1pp1/p1pp2p1/4q3/2P1P1Q1/4R2P/PP3PP1/6K1 b - -    ; Ke8
>r2r2k1/ppp1qppp/4pn2/8/2P1PP2/1P6/P1B1Q1PP/3R1R1K b - -    ; e5
>8/4k3/4bpp1/7p/1p2p3/4P1PB/1P2P1KP/8 b - -    ; f5
>2r1nrk1/p2q1ppp/bp1p4/n1pPp3/P1P1P3/2PBB1N1/4QPPP/R4RK1 w - -    ; f4
>r2q1rk1/4bppp/p2p4/2pP4/3pP3/3Q4/PP1B1PPP/R3R1K1 w - -    ; b4
>2r2rk1/1p1bq3/p3p2p/3pPpp1/1P1Q4/P7/2P2PPP/2R1RBK1 b - -    ; Bb5
>r1b2r1k/pp2q1pp/2p2p2/2p1n2N/4P3/1PNP2QP/1PP2RP1/5RK1 w - -    ; Nd1
>bn6/1q4n1/1p1p1kp1/2pPp1pp/1PP1P1P1/3N1P1P/4B1K1/2Q2N2 w - -    ; h4
>
>Enrique

Enrique,

Thank you very much for the nice test positions. You seem to have
"handpicked" them for DarkThought because it solves 20 of them in
less than 5 minutes on a 500MHz AlphaPC-164 (most of them in less
than 1 min) and it keeps the answers for at least another 5 minutes.

What I do not like about this test, however, is the fact that a
couple of positions are taken from other well-known suites like
BK or LCT-II. This breaks independence between test suites and
reaps multiple rewards for solving the positions.

=Ernst=



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