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Subject: Re: Can any program solve these 6 positions using 12 minutes of time each?

Author: Dann Corbit

Date: 11:04:05 05/14/99

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On May 14, 1999 at 00:54:01, Peter McKenzie wrote:

>On May 13, 1999 at 14:03:30, Dann Corbit wrote:
>
>>r1bqkb1r/pp3ppp/2nppn2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq -; bm Qd2;
>>r1bqkb1r/ppp1pppp/1nn5/4P3/2PP4/8/PP4PP/RNBQKBNR w KQkq -; bm Be3;
>>rn1qkb1r/pb1p1ppp/1p2pn2/2p5/2PP4/5NP1/PP2PPBP/RNBQK2R w KQkq c6; bm d5;
>>r1bqkb1r/2pp1ppp/p1n5/1p2p3/3Pn3/1B3N2/PPP2PPP/RNBQ1RK1 b kq -; bm d5;
>>rnbqkb1r/pppp1ppp/5n2/4p3/4PP2/2N5/PPPP2PP/R1BQKBNR b KQkq f3; bm d5;
>
>What is significant about these positions?
>Where did they come from?

These positions have the following distinctions:

0.  They are contained within standard positions of the Encyclopedia of Chess
Openings (ECO).
1.  They are also members of standard chess problem sets
2.  They were not correctly solved by either of the two 12 minute runs in C.A.P.

Here is the C.A.P. data on these positions.  One of them (the 2nd) was run at
long time controls, still without success.  You will have to un-word wrap this
set to read it properly in an editor, I'm afraid.

Epd                                                              acd acn
ce pv
      bm  pm   id
---------------------------------------------------------------- --- ---------
--
-----------------------------------------------------------------------------------
--- ---- -------------
r1bqkb1r/2pp1ppp/p1n5/1p2p3/3Pn3/1B3N2/PPP2PPP/RNBQ1RK1 b kq -   13  104149257
12 exd4 Re1 d5 Bxd5 Qxd5 Nc3 Qh5 Nxe4 Be6 Bg5
      d5  exd4 CCR.16
r1bqkb1r/pp3ppp/2nppn2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq -     16  -41066923
62 Bb5 Bd7 Nxc6 bxc6 Ba4 Rb8 Bb3 c5 Qd3 Rb4 O-O e5 Bxf6 gxf6 Qa6 Qb6 Qd3
      Qd2 Bb5  Crafty POS271
r1bqkb1r/ppp1pppp/1nn5/4P3/2PP4/8/PP4PP/RNBQKBNR w KQkq -        13  179131342
35 Nf3 Bg4 Be2 Qd7 c5 Nd5 O-O O-O-O Nc3 f6 Bb5 fxe5 Nxd5 Qxd5 Bxc6 Qxc6 Nxe5
Bxd1 Nxc6 Be3 Nf3  Crafty POS080
rn1qkb1r/pb1p1ppp/1p2pn2/2p5/2PP4/5NP1/PP2PPBP/RNBQK2R w KQkq c6 13  110595207
20 O-O cxd4 Qxd4 Nc6 Qh4 Nb4 Na3 Bc5 Bg5 O-O Rfd1 Rc8 Bxf6 gxf6
      d5  O-O  CCR.08
rnbqkb1r/pppp1ppp/5n2/4p3/4PP2/2N5/PPPP2PP/R1BQKBNR b KQkq f3    13  93128072
-3 exf4 e5 Ng8 Qg4 g5 Nf3 d6 Qh5 dxe5 Nxg5 Nh6 Bc4 Qf6
      d5  exf4 CCR.11



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