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Subject: Re: The 16 ply challenge restated

Author: Vincent Diepeveen

Date: 08:24:44 09/15/00

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On September 14, 2000 at 15:55:55, Dann Corbit wrote:

Can you post the answers too Dann,
so that i can skip found answers if score is high with the automatic
tester tonight, as it'll find more as one :)

>Here are a set of tough positions to search deeply.  Just finding a mate is not
>good enough, uless you can *prove* it is the shortest mate.  Analyze to a depth
>of 16 plies.
>
>The first one to solve *any* of these positions to that depth (16 or more) will
>have a poem composed in their honor.  The challenge is permanent and a
>technological breakthrough may require that I write an entire book of poetry
>(27) poems dedicated to whoever can topple these beasts.
>
>2r3k1/pp1b1p2/1q1pp1p1/2r3Pn/4P3/1BN2Q2/PPP5/1K1R3R w - -
>2r3kr/5pp1/7p/3PQRb1/ppq1B3/8/PPP3PP/1K1R4 w - -
>2rqk2r/pb1nbp1p/4p1p1/1B1n4/Np1N4/7Q/PP3PPP/R1B1R1K1 w k -
>2rqk2r/pb1nbp1p/4p1pB/1B1n4/Np1N4/7Q/PP3PPP/R3R1K1 b k -
>2rqk2r/pb1nbp1p/4R1p1/1B1n4/Np1N4/7Q/PP3PPP/R1B3K1 b k -
>N1bk2nr/pp1p1ppp/2n5/8/1b6/5B1q/PPPN1P1P/R1BQK2R b KQ -
>N1bk3r/pp1p1ppp/2n2n2/8/1b6/5B1q/PPPN1P1P/R1BQK2R w KQ -
>r1b1k1nr/pppp1ppp/2n5/1N6/1b6/5B1q/PPPN1P1P/R1BQK2R w KQkq -
>r1b1r1k1/ppq2p1p/3b1ppQ/2n5/8/3B2N1/PPP2PPP/R1B2RK1 w - -
>r1b2rk1/pp4p1/4pb1B/2P5/Pq2B3/1P6/2QP1P2/2KR2R1 w - -
>r1bq1b1r/pp4pp/n1p1k3/3np3/2B1Q3/P1N5/1PPP1PPP/R1B1K2R w KQ -
>r1bq1b1r/ppn3pp/2p1k3/3np3/2BPQ3/P1N5/1PP2PPP/R1B1K2R w KQ -
>r1bq1b1r/ppp3pp/4k3/3np3/1nB5/2N2Q2/PPPP1PPP/R1B1K2R w KQ -
>r1bq1r2/ppp2pkp/3p2nn/2bN2NQ/2B1P3/8/PPp3PP/R1B2R1K w - -
>r1bqk1nr/pp1nbppp/2pp4/4p3/2BPP3/5N2/PPP2PPP/RNBQ1RK1 w kq -
>r1bqk1nr/pppp1ppp/2n5/b3P3/2B5/2P2N2/P4PPP/RNBQK2R b KQkq -
>r3qr1k/pp3pbp/2pn4/7Q/3pP3/2NB3P/PPP3P1/R4RK1 w - -
>r4r1k/bpq3pp/p1b2n2/8/2B5/PQ4NP/1P1B1PP1/R4RK1 b - -
>r4r2/q1pb1pkp/1p1p2p1/2nPpP1P/2P1P3/p1N2P2/PP1Q4/2KR1BR1 w - -
>rn1q1rk1/ppp2ppp/8/2bP1b2/4nPP1/5N2/PPP1Q2P/RNB1KB1R w KQ -
>rn2kb1r/1bq2ppp/3ppn2/1B2P1B1/1p1N1P2/5Q2/PPP3PP/2KR3R b kq -
>rnb1k2r/ppp2p1p/5n2/3qN3/1b1P1ppP/2N5/PPP2KP1/R1BQ1B1R b kq -
>rnb1kbnr/ppp2p1p/8/3B2p1/4Pp1q/6P1/PPPP3P/RNBQ1KNR b kq -
>rnbqk1nr/pppp1ppp/8/8/2B1P2b/5N2/PPPP3p/RNBQ1RK1 w kq -
>rnbqk1nr/pppp1ppp/8/8/2BPPp1b/5N2/P1P3PP/RNBQK2R w KQkq -
>rnbqk2r/ppp2ppp/5P2/2b4Q/2pp4/2P5/PP3PPP/RNB1K1NR b KQkq -
>rnbqkbnr/ppp2p1p/8/3pN3/3PPppP/8/PPP3P1/RNBQKB1R b KQkq d3



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