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Created page with "'''Home * Engine Testing * Test-Positions * Silent but Deadly''' FILE:Vincent van Gogh - Head of a skeleton with a burning cigarette - Google Art Proj..."
'''[[Main Page|Home]] * [[Engine Testing]] * [[Test-Positions]] * Silent but Deadly'''
[[FILE:Vincent van Gogh - Head of a skeleton with a burning cigarette - Google Art Project.jpg|border|right|thumb| [[:Category:Vincent van Gogh|Vincent van Gogh]] - [https://en.wikipedia.org/wiki/Skull_of_a_Skeleton_with_Burning_Cigarette Skull of a Skeleton with Burning Cigarette] (1886) <ref>[[:Category:Vincent van Gogh|Vincent van Gogh]] - [https://en.wikipedia.org/wiki/Skull_of_a_Skeleton_with_Burning_Cigarette Skull of a Skeleton with Burning Cigarette] (1886), [https://en.wikipedia.org/wiki/Oil_painting oil on canvas], [https://en.wikipedia.org/wiki/Van_Gogh_Museum Van Gogh Museum], [https://en.wikipedia.org/wiki/Amsterdam Amsterdam], [https://en.wikipedia.org/wiki/Vincent_van_Gogh Vincent van Gogh from Wikipedia], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]
'''Silent but Deadly (sbd),''' <br/>
an [[Extended Position Description|EPD]] test by [[Dann Corbit]] that is designed to help [[Automated Tuning|tune]] chess engines, first published in [[CCC]]. In August 2008, Dann found a novelty in one of the positions <ref>[http://www.talkchess.com/forum/viewtopic.php?t=22952 From the silent but deadly set, a novelty] by [[Dann Corbit]], [[CCC]], August 12, 2008</ref>.
=Description=
This is an EPD test that is designed to help tune chess engines. All of the positions are fairly quiet, and the best move is not a capture. The evaluation for the position is intended to be below one pawn for a one minute search. There are a few positions that have a score a bit larger than one pawn (marked polar) and there are a few positions that have more than one solution (marked Multiple solutions). I would like to see suggestions for replacements for the positions with comments attached. For each of these positions, ultra strong chess players chose the marked best move, as well as many strong chess engines (including [[Rybka]] and [[Naum]] at 150 seconds). So the test suite should be fairly well debugged. However, I will be very interested in any defects that can be discovered. The main intention is that you can use it to tune your chess engines at shallow depths for positional or otherwise quiet moves. <ref>[http://www.talkchess.com/forum/viewtopic.php?t=21038 Silent but deadly] by [[Dann Corbit]], [[CCC]], May 7, 2008</ref>
=Record=
<pre>
1qr3k1/p2nbppp/bp2p3/3p4/3P4/1P2PNP1/P2Q1PBP/1N2R1K1 b - - bm Qc7; id "sbd.001";
1r2r1k1/3bnppp/p2q4/2RPp3/4P3/6P1/2Q1NPBP/2R3K1 w - - bm Rc7; id "sbd.002";
2b1k2r/2p2ppp/1qp4n/7B/1p2P3/5Q2/PPPr2PP/R2N1R1K b k - bm O-O; id "sbd.003";
2b5/1p4k1/p2R2P1/4Np2/1P3Pp1/1r6/5K2/8 w - - bm Rd8; id "sbd.004";
2brr1k1/ppq2ppp/2pb1n2/8/3NP3/2P2P2/P1Q2BPP/1R1R1BK1 w - - bm g3; id "sbd.005";
2kr2nr/1pp3pp/p1pb4/4p2b/4P1P1/5N1P/PPPN1P2/R1B1R1K1 b - - bm Bf7; id "sbd.006";
2r1k2r/1p1qbppp/p3pn2/3pBb2/3P4/1QN1P3/PP2BPPP/2R2RK1 b k - bm O-O; id "sbd.007";
2r1r1k1/pbpp1npp/1p1b3q/3P4/4RN1P/1P4P1/PB1Q1PB1/2R3K1 w - - bm Rce1; id "sbd.008";
2r2k2/r4p2/2b1p1p1/1p1p2Pp/3R1P1P/P1P5/1PB5/2K1R3 w - - bm Kd2; id "sbd.009";
2r3k1/5pp1/1p2p1np/p1q5/P1P4P/1P1Q1NP1/5PK1/R7 w - - bm Rd1; id "sbd.010";
2r3qk/p5p1/1n3p1p/4PQ2/8/3B4/5P1P/3R2K1 w - - bm e6; id "sbd.011";
3b4/3k1pp1/p1pP2q1/1p2B2p/1P2P1P1/P2Q3P/4K3/8 w - - bm Qf3; id "sbd.012";
3n1r1k/2p1p1bp/Rn4p1/6N1/3P3P/2N1B3/2r2PP1/5RK1 w - - bm Na4 Nce4; id "sbd.013";
3q1rk1/3rbppp/ppbppn2/1N6/2P1P3/BP6/P1B1QPPP/R3R1K1 w - - bm Nd4; id "sbd.014";
3r1rk1/p1q4p/1pP1ppp1/2n1b1B1/2P5/6P1/P1Q2PBP/1R3RK1 w - - bm Bh6; id "sbd.015";
3r2k1/2q2p1p/5bp1/p1pP4/PpQ5/1P3NP1/5PKP/3R4 b - - bm Qd6; id "sbd.016";
3r2k1/p1q1npp1/3r1n1p/2p1p3/4P2B/P1P2Q1P/B4PP1/1R2R1K1 w - - bm Bc4; id "sbd.017";
3r4/2k5/p3N3/4p3/1p1p4/4r3/PPP3P1/1K1R4 b - - bm Kd7; id "sbd.018";
3r4/2R1np1p/1p1rpk2/p2b1p2/8/PP2P3/4BPPP/2R1NK2 w - - bm b4; id "sbd.019";
3rk2r/1b2bppp/p1qppn2/1p6/4P3/PBN2PQ1/1PP3PP/R1B1R1K1 b k - bm O-O; id "sbd.020";
3rk2r/1bq2pp1/2pb1n1p/p3pP2/P1B1P3/8/1P2QBPP/2RN1R1K b k - bm Be7 O-O; id "sbd.021";
3rkb1r/pppb1pp1/4n2p/2p5/3NN3/1P5P/PBP2PP1/3RR1K1 w - - bm Nf5; id "sbd.022";
3rr1k1/1pq2ppp/p1n5/3p4/6b1/2P2N2/PP1QBPPP/3R1RK1 w - - bm Rfe1; id "sbd.023";
4r1k1/1q1n1ppp/3pp3/rp6/p2PP3/N5P1/PPQ2P1P/3RR1K1 w - - bm Rc1; id "sbd.024";
4rb1k/1bqn1pp1/p3rn1p/1p2pN2/1PP1p1N1/P1P2Q1P/1BB2PP1/3RR1K1 w - - bm Qe2; id "sbd.025";
4rr2/2p5/1p1p1kp1/p6p/P1P4P/6P1/1P3PK1/3R1R2 w - - bm Rfe1; id "sbd.026";
5r2/pp1b1kpp/8/2pPp3/2P1p2P/4P1r1/PPRKB1P1/6R1 b - - bm Ke7; id "sbd.027";
6k1/1R5p/r2p2p1/2pN2B1/2bb4/P7/1P1K2PP/8 w - - bm Nf6+; id "sbd.028";
6k1/pp1q1pp1/2nBp1bp/P2pP3/3P4/8/1P2BPPP/2Q3K1 w - - bm Qc5; id "sbd.029";
6k1/pp2rp1p/2p2bp1/1n1n4/1PN3P1/P2rP2P/R3NPK1/2B2R2 w - - bm Rd2; id "sbd.030";
8/2p2kpp/p6r/4Pp2/1P2pPb1/2P3P1/P2B1K1P/4R3 w - - bm h4; id "sbd.031";
Q5k1/5pp1/5n1p/2b2P2/8/5N1P/5PP1/2q1B1K1 b - - bm Kh7; id "sbd.032";
r1b1k1nr/1p3ppp/p1np4/4p1q1/2P1P3/N1NB4/PP3PPP/2RQK2R w Kkq - bm O-O; id "sbd.033";
r1b1k2r/p1pp1ppp/1np1q3/4P3/1bP5/1P6/PB1NQPPP/R3KB1R b KQkq - bm O-O; id "sbd.034";
r1b1k2r/ppppqppp/8/2bP4/3p4/6P1/PPQPPPBP/R1B2RK1 b kq - bm O-O; id "sbd.035";
r1b1k2r/ppq1bppp/2n5/2N1p3/8/2P1B1P1/P3PPBP/R2Q1RK1 b kq - bm O-O; id "sbd.036";
r1b1kb1r/pp2qppp/2pp4/8/4nP2/2N2N2/PPPP2PP/R1BQK2R w KQkq - bm O-O; id "sbd.037";
r1b1qrk1/pp4b1/2pRn1pp/5p2/2n2B2/2N2NPP/PPQ1PPB1/5RK1 w - - bm Rd3; id "sbd.038";
r1b2rk1/1pqn1pp1/p2bpn1p/8/3P4/2NB1N2/PPQB1PPP/3R1RK1 w - - bm Rc1; id "sbd.039";
r1b2rk1/2qnbp1p/p1npp1p1/1p4PQ/4PP2/1NNBB3/PPP4P/R4RK1 w - - bm Qh6; id "sbd.040";
r1b2rk1/pp2ppbp/2n2np1/2q5/5B2/1BN1PN2/PP3PPP/2RQK2R w K - bm O-O; id "sbd.041";
r1b2rk1/pp4pp/1q1Nppn1/2n4B/1P3P2/2B2RP1/P6P/R2Q3K b - - bm Na6; id "sbd.042";
r1b2rk1/ppp1qppp/1b1n4/8/B2n4/3NN3/PPPP1PPP/R1BQK2R w KQ - bm O-O; id "sbd.043";
r1b2rk1/ppq1bppp/2p1pn2/8/2NP4/2N1P3/PP2BPPP/2RQK2R w K - bm O-O; id "sbd.044";
r1bq1rk1/1p1n1pp1/p4n1p/2bp4/8/2NBPN2/PPQB1PPP/R3K2R w KQ - bm O-O; id "sbd.045";
r1bq1rk1/1p2ppbp/p2p1np1/6B1/2P1P3/2N5/PP1QBPPP/R3K2R w KQ - bm O-O; id "sbd.046";
r1bq1rk1/1p3ppp/p1np4/3Np1b1/2B1P3/P7/1PP2PPP/RN1QK2R w KQ - bm O-O; id "sbd.047";
r1bq1rk1/4bppp/ppnppn2/8/2P1P3/2N5/PPN1BPPP/R1BQK2R w KQ - bm O-O; id "sbd.048";
r1bq1rk1/pp1n1pbp/2n1p1p1/2ppP3/8/2PP1NP1/PP1N1PBP/R1BQ1RK1 w - - bm d4; id "sbd.049";
r1bq1rk1/pp1pppbp/2n2np1/8/4P3/1NN5/PPP1BPPP/R1BQK2R w KQ - bm O-O; id "sbd.050";
r1bq1rk1/pp2ppbp/2n2np1/2p3B1/4P3/2P2N2/PP1NBPPP/R2QK2R w KQ - bm O-O; id "sbd.051";
r1bq1rk1/pp2ppbp/2n3p1/2p5/2BPP3/2P1B3/P3NPPP/R2QK2R w KQ - bm O-O; id "sbd.052";
r1bq1rk1/pp3ppp/2n1pn2/2p5/1bBP4/2N1PN2/PP3PPP/R1BQ1RK1 w - - bm a3; id "sbd.053";
r1bq1rk1/pp3ppp/2n2n2/3p4/8/P1NB4/1PP2PPP/R1BQK2R w KQ - bm O-O; id "sbd.054";
r1bq1rk1/ppp1npb1/3p2pp/3Pp2n/1PP1P3/2N5/P2NBPPP/R1BQR1K1 b - - bm Nf4; id "sbd.055";
r1bq1rk1/ppp2ppp/2n1pn2/3p4/1bPP4/2NBPN2/PP3PPP/R1BQK2R w KQ - bm O-O; id "sbd.056";
r1bq1rk1/pppp1pbp/2n2np1/4p3/2P5/P1N2NP1/1P1PPPBP/R1BQK2R w KQ - bm O-O; id "sbd.057";
r1bqk2r/2ppbppp/p1n2n2/1p2p3/4P3/1B3N2/PPPPQPPP/RNB2RK1 b kq - bm O-O; id "sbd.058";
r1bqk2r/5ppp/p1np4/1p1Np1b1/4P3/2P5/PPN2PPP/R2QKB1R b KQkq - bm O-O; id "sbd.059";
r1bqk2r/bp3ppp/p1n1pn2/3p4/1PP5/P1N1PN2/1B3PPP/R2QKB1R b KQkq - bm O-O; id "sbd.060";
r1bqk2r/p2pppbp/2p3pn/2p5/4P3/2P2N2/PP1P1PPP/RNBQR1K1 b kq - bm O-O; id "sbd.061";
r1bqk2r/pp2bppp/2n1p3/1B1n4/3P4/2N2N2/PP3PPP/R1BQ1RK1 b kq - bm O-O; id "sbd.062";
r1bqk2r/pp2bppp/2n1p3/3n4/3P4/2NB1N2/PP3PPP/R1BQ1RK1 b kq - bm O-O; id "sbd.063";
r1bqk2r/pp2ppbp/2np1np1/2p5/4P3/1B1P1N1P/PPP2PP1/RNBQK2R w KQkq - bm O-O; id "sbd.064";
r1bqk2r/ppn1bppp/2n5/2p1p3/8/2NP1NP1/PP1BPPBP/R2Q1RK1 b kq - bm O-O; id "sbd.065";
r1bqk2r/ppp1bppp/2n5/3p4/3P4/2PB1N2/P1P2PPP/R1BQ1RK1 b kq - bm O-O; id "sbd.066";
r1bqk2r/ppp2ppp/2nb4/3np3/8/PP2P3/1BQP1PPP/RN2KBNR b KQkq - bm O-O; id "sbd.067";
r1bqk2r/ppp2ppp/3b4/4p3/8/1PPP1N2/2PB1PPP/R2Q1RK1 b kq - bm O-O; id "sbd.068";
r1bqk2r/pppp1ppp/5n2/4p3/Bb2P3/5Q2/PPPPNPPP/R1B1K2R b KQkq - bm O-O; id "sbd.069";
r1bqkb1r/pp3ppp/2n5/2pp4/3Pn3/2N2N2/PPP1BPPP/R1BQK2R w KQkq - bm O-O; id "sbd.070";
r1bqkb1r/pp3ppp/2npp3/3nP3/2BP4/5N2/PP3PPP/RNBQK2R w KQkq - bm O-O; id "sbd.071";
r1bqkbnr/3p1ppp/p1p1p3/8/4P3/3B4/PPP2PPP/RNBQK2R w KQkq - bm O-O; id "sbd.072";
r1bqkbnr/ppp2ppp/2n5/8/2BpP3/5N2/PP3PPP/RNBQK2R w KQkq - bm O-O; id "sbd.073";
r1bqrbk1/1pp3pp/2n2p2/p2np3/8/PP1PPN2/1BQNBPPP/R3K2R w KQ - bm O-O; id "sbd.074";
r1br2k1/1p2qppp/pN2pn2/P7/2pn4/4N1P1/1P2PPBP/R3QRK1 b - - bm Rb8; id "sbd.075";
r1q1k2r/1b1nbppp/pp1ppn2/8/2PQP3/1PN2NP1/PB3PBP/R2R2K1 b kq - bm O-O; id "sbd.076";
r1q1k2r/pb1nbppp/1p2pn2/8/P1PNP3/2B3P1/2QN1PBP/R4RK1 b kq - bm O-O; id "sbd.077";
r1r3k1/1bq2pbp/pp1pp1p1/2n5/P3PP2/R2B4/1PPBQ1PP/3N1R1K w - - bm Bc3; id "sbd.078";
r1rn2k1/pp1qppbp/6p1/3pP3/3P4/1P3N1P/PB1Q1PP1/R3R1K1 w - - bm Rac1; id "sbd.079";
r2q1rk1/1b1nbpp1/pp2pn1p/8/2BN3B/2N1P3/PP2QPPP/2R2RK1 w - - bm Rfd1; id "sbd.080";
r2q1rk1/1b3ppp/4pn2/1pP5/1b6/2NBPN2/1PQ2PPP/R3K2R w KQ - bm O-O; id "sbd.081";
r2q1rk1/pb1nppbp/6p1/1p6/3PP3/3QBN1P/P3BPP1/R3K2R w KQ - bm O-O; id "sbd.082";
r2q1rk1/pb2bppp/npp1pn2/3pN3/2PP4/1PB3P1/P2NPPBP/R2Q1RK1 w - - bm e4; id "sbd.083";
r2q1rk1/pppb1pbp/2np1np1/4p3/2P5/P1NPPNP1/1P3PBP/R1BQK2R w KQ - bm O-O; id "sbd.084";
r2qk2r/1b1n1ppp/4pn2/p7/1pPP4/3BPN2/1B3PPP/R2QK2R w KQkq - bm O-O; id "sbd.085";
r2qk2r/1b2bppp/p1n1pn2/1p6/1P6/P2BPN2/1B2QPPP/RN3RK1 b kq - bm O-O; id "sbd.086";
r2qk2r/2p2ppp/p1n1b3/1pbpP3/4n3/1BP2N2/PP1N1PPP/R1BQ1RK1 b kq - bm O-O; id "sbd.087";
r2qk2r/3n1ppp/p3p3/3nP3/3R4/5N2/1P1N1PPP/3QR1K1 b kq - bm O-O; id "sbd.088";
r2qk2r/p1pn1ppp/b3pn2/3p4/Nb1P4/1P3NP1/P3PPBP/1RBQ1RK1 b kq - bm O-O Qe7; id "sbd.089";
r2qk2r/ppp1bppp/2n2n2/8/2BP2b1/2N2N2/PP3PPP/R1BQR1K1 b kq - bm O-O; id "sbd.090";
r2qkb1r/pb1n1p2/2p1p2p/4P1pn/PppP4/2N2NB1/1P2BPPP/R2Q1RK1 w kq - bm Ne4; id "sbd.091";
r2qkb1r/pp2nppp/1np1p3/4Pb2/3P4/PB3N2/1P3PPP/RNBQ1RK1 b kq - bm Ned5; id "sbd.092";
r2qkb1r/pp3ppp/2bppn2/8/2PQP3/2N2N2/PP3PPP/R1B1K2R w KQkq - bm O-O; id "sbd.093";
r2qr1k1/p3bppp/1p2n3/3Q1N2/5P2/4B1P1/PP3R1P/R5K1 w - - bm Rd1; id "sbd.094";
r2r2k1/p1pnqpp1/1p2p2p/3b4/3P4/3BPN2/PP3PPP/2RQR1K1 b - - bm c5; id "sbd.095";
r2r2k1/pp1b1ppp/8/3p2P1/3N4/P3P3/1P3P1P/3RK2R b K - bm Rac8; id "sbd.096";
r3k2r/1b1nb1p1/p1q1pn1p/1pp3N1/4PP2/2N5/PPB3PP/R1BQ1RK1 w kq - bm Nf3; id "sbd.097";
r3k2r/1pqnnppp/p5b1/1PPp1p2/3P4/2N5/P2NB1PP/2RQ1RK1 b kq - bm O-O; id "sbd.098";
r3k2r/p1q1nppp/1pn5/2P1p3/4P1Q1/P1P2P2/4N1PP/R1B2K1R b kq - bm O-O; id "sbd.099";
r3k2r/pp2pp1p/6p1/2nP4/1R2PB2/4PK2/P5PP/5bNR w kq - bm Ne2; id "sbd.100";
r3k2r/ppp1bppp/2n5/3n4/3PB3/8/PP3PPP/RNB1R1K1 b kq - bm O-O-O; id "sbd.101";
r3kb1r/pp3ppp/4bn2/3p4/P7/4N1P1/1P2PPBP/R1B1K2R w KQkq - bm O-O; id "sbd.102";
r3kbnr/1pp3pp/p1p2p2/8/3qP3/5Q1P/PP3PP1/RNB2RK1 w kq - bm Rd1; id "sbd.103";
r3kr2/pppb1p2/2n3p1/3Bp2p/4P2N/2P5/PP3PPP/2KR3R b q - bm O-O-O; id "sbd.104";
r3nrk1/pp2qpb1/3p1npp/2pPp3/2P1P2N/2N3Pb/PP1BBP1P/R2Q1RK1 w - - bm Re1; id "sbd.105";
r3r1k1/1pqn1pbp/p2p2p1/2nP2B1/P1P1P3/2NB3P/5PP1/R2QR1K1 w - - bm Rc1; id "sbd.106";
r3r1k1/pp1q1ppp/2p5/P2n1p2/1b1P4/1B2PP2/1PQ3PP/R1B2RK1 w - - bm e4; id "sbd.107";
r3r1k1/pp3ppp/2ppqn2/5R2/2P5/2PQP1P1/P2P2BP/5RK1 w - - bm Qd4; id "sbd.108";
r3rbk1/p2b1p2/5p1p/1q1p4/N7/6P1/PP1BPPBP/3Q1RK1 w - - bm Nc3; id "sbd.109";
r4r1k/pp1bq1b1/n2p2p1/2pPp1Np/2P4P/P1N1BP2/1P1Q2P1/2KR3R w - - bm Ne6; id "sbd.110";
r4rk1/1bqp1ppp/pp2pn2/4b3/P1P1P3/2N2BP1/1PQB1P1P/2R2RK1 w - - bm b3; id "sbd.111";
r4rk1/1q2bppp/p1bppn2/8/3BPP2/3B2Q1/1PP1N1PP/4RR1K w - - bm e5; id "sbd.112";
r4rk1/pp2qpp1/2pRb2p/4P3/2p5/2Q1PN2/PP3PPP/4K2R w K - bm O-O; id "sbd.113";
r7/3rq1kp/2p1bpp1/p1Pnp3/2B4P/PP4P1/1B1RQP2/2R3K1 b - - bm Rad8; id "sbd.114";
r7/pp1bpp2/1n1p2pk/1B3P2/4P1P1/2N5/PPP5/1K5R b - - bm Kg5; id "sbd.115";
rn1q1rk1/p4pbp/bp1p1np1/2pP4/8/P1N2NP1/1PQ1PPBP/R1B1K2R w KQ - bm O-O; id "sbd.116";
rn1q1rk1/pb3p2/1p5p/3n2P1/3p4/P4P2/1P1Q1BP1/R3KBNR b KQ - bm Re8+; id "sbd.117";
rn1q1rk1/pp2bppp/1n2p1b1/8/2pPP3/1BN1BP2/PP2N1PP/R2Q1RK1 w - - bm Bc2; id "sbd.118";
rn1q1rk1/pp3ppp/4bn2/2bp4/5B2/2NBP1N1/PP3PPP/R2QK2R w KQ - bm O-O; id "sbd.119";
rn1qkbnr/pp1b1ppp/8/1Bpp4/3P4/8/PPPNQPPP/R1B1K1NR b KQkq - bm Qe7; id "sbd.120";
rn1qr1k1/pb3p2/1p5p/3n2P1/3p4/P4P2/1P1QNBP1/R3KB1R b KQ - bm d3; id "sbd.121";
rn2kb1r/pp2nppp/1q2p3/3pP3/3P4/5N2/PP2NPPP/R1BQK2R w KQkq - bm O-O; id "sbd.122";
rn3rk1/1bqp1ppp/p3pn2/8/Nb1NP3/4B3/PP2BPPP/R2Q1RK1 w - - bm Rc1; id "sbd.123";
rn3rk1/pbp1qppp/1p1ppn2/8/2PP4/P1Q2NP1/1P2PPBP/R1B1K2R w KQ - bm O-O; id "sbd.124";
rnb1k2r/1pq2ppp/p2ppn2/2b5/3NPP2/2P2B2/PP4PP/RNBQ1R1K b kq - bm O-O; id "sbd.125";
rnb2rk1/ppq1ppbp/6p1/2p5/3PP3/2P2N2/P3BPPP/1RBQK2R w K - bm O-O; id "sbd.126";
rnbq1rk1/5ppp/p3pn2/1p6/2BP4/P1P2N2/5PPP/R1BQ1RK1 w - - bm Bd3; id "sbd.127";
rnbq1rk1/pp2ppbp/2pp1np1/8/P2PP3/2N2N2/1PP1BPPP/R1BQK2R w KQ - bm O-O; id "sbd.128";
rnbq1rk1/ppp1ppbp/6p1/8/8/2P2NP1/P2PPPBP/R1BQK2R w KQ - bm O-O; id "sbd.129";
rnbqk1nr/pp3pbp/2ppp1p1/8/2BPP3/2N2Q2/PPP2PPP/R1B1K1NR w KQkq - bm Nge2; id "sbd.130";
rnbqk2r/ppp2ppp/1b1p1n2/4p3/2B1P3/2PP1N2/PP1N1PPP/R1BQK2R b KQkq - bm O-O; id "sbd.131";
rnbqk2r/pppp2pp/4pn2/5p2/1b1P4/2P2NP1/PP2PPBP/RNBQK2R b KQkq - bm Be7; id "sbd.132";
rnbqr1k1/pp1p1ppp/5n2/3Pb3/1P6/P1N3P1/4NPBP/R1BQK2R w KQ - bm O-O; id "sbd.133";
rnq1nrk1/pp3pbp/6p1/3p4/3P4/5N2/PP2BPPP/R1BQK2R w KQ - bm O-O; id "sbd.134";
</pre>
=Forum Posts=
* [http://www.talkchess.com/forum/viewtopic.php?t=21038 Silent but deadly] by [[Dann Corbit]], [[CCC]], May 7, 2008
* [http://www.talkchess.com/forum/viewtopic.php?t=22952 From the silent but deadly set, a novelty] by [[Dann Corbit]], [[CCC]], August 12, 2008
=References=
<references />
'''[[Test-Positions|Up one level]]'''
[[Category:Vincent van Gogh]]
[[FILE:Vincent van Gogh - Head of a skeleton with a burning cigarette - Google Art Project.jpg|border|right|thumb| [[:Category:Vincent van Gogh|Vincent van Gogh]] - [https://en.wikipedia.org/wiki/Skull_of_a_Skeleton_with_Burning_Cigarette Skull of a Skeleton with Burning Cigarette] (1886) <ref>[[:Category:Vincent van Gogh|Vincent van Gogh]] - [https://en.wikipedia.org/wiki/Skull_of_a_Skeleton_with_Burning_Cigarette Skull of a Skeleton with Burning Cigarette] (1886), [https://en.wikipedia.org/wiki/Oil_painting oil on canvas], [https://en.wikipedia.org/wiki/Van_Gogh_Museum Van Gogh Museum], [https://en.wikipedia.org/wiki/Amsterdam Amsterdam], [https://en.wikipedia.org/wiki/Vincent_van_Gogh Vincent van Gogh from Wikipedia], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]
'''Silent but Deadly (sbd),''' <br/>
an [[Extended Position Description|EPD]] test by [[Dann Corbit]] that is designed to help [[Automated Tuning|tune]] chess engines, first published in [[CCC]]. In August 2008, Dann found a novelty in one of the positions <ref>[http://www.talkchess.com/forum/viewtopic.php?t=22952 From the silent but deadly set, a novelty] by [[Dann Corbit]], [[CCC]], August 12, 2008</ref>.
=Description=
This is an EPD test that is designed to help tune chess engines. All of the positions are fairly quiet, and the best move is not a capture. The evaluation for the position is intended to be below one pawn for a one minute search. There are a few positions that have a score a bit larger than one pawn (marked polar) and there are a few positions that have more than one solution (marked Multiple solutions). I would like to see suggestions for replacements for the positions with comments attached. For each of these positions, ultra strong chess players chose the marked best move, as well as many strong chess engines (including [[Rybka]] and [[Naum]] at 150 seconds). So the test suite should be fairly well debugged. However, I will be very interested in any defects that can be discovered. The main intention is that you can use it to tune your chess engines at shallow depths for positional or otherwise quiet moves. <ref>[http://www.talkchess.com/forum/viewtopic.php?t=21038 Silent but deadly] by [[Dann Corbit]], [[CCC]], May 7, 2008</ref>
=Record=
<pre>
1qr3k1/p2nbppp/bp2p3/3p4/3P4/1P2PNP1/P2Q1PBP/1N2R1K1 b - - bm Qc7; id "sbd.001";
1r2r1k1/3bnppp/p2q4/2RPp3/4P3/6P1/2Q1NPBP/2R3K1 w - - bm Rc7; id "sbd.002";
2b1k2r/2p2ppp/1qp4n/7B/1p2P3/5Q2/PPPr2PP/R2N1R1K b k - bm O-O; id "sbd.003";
2b5/1p4k1/p2R2P1/4Np2/1P3Pp1/1r6/5K2/8 w - - bm Rd8; id "sbd.004";
2brr1k1/ppq2ppp/2pb1n2/8/3NP3/2P2P2/P1Q2BPP/1R1R1BK1 w - - bm g3; id "sbd.005";
2kr2nr/1pp3pp/p1pb4/4p2b/4P1P1/5N1P/PPPN1P2/R1B1R1K1 b - - bm Bf7; id "sbd.006";
2r1k2r/1p1qbppp/p3pn2/3pBb2/3P4/1QN1P3/PP2BPPP/2R2RK1 b k - bm O-O; id "sbd.007";
2r1r1k1/pbpp1npp/1p1b3q/3P4/4RN1P/1P4P1/PB1Q1PB1/2R3K1 w - - bm Rce1; id "sbd.008";
2r2k2/r4p2/2b1p1p1/1p1p2Pp/3R1P1P/P1P5/1PB5/2K1R3 w - - bm Kd2; id "sbd.009";
2r3k1/5pp1/1p2p1np/p1q5/P1P4P/1P1Q1NP1/5PK1/R7 w - - bm Rd1; id "sbd.010";
2r3qk/p5p1/1n3p1p/4PQ2/8/3B4/5P1P/3R2K1 w - - bm e6; id "sbd.011";
3b4/3k1pp1/p1pP2q1/1p2B2p/1P2P1P1/P2Q3P/4K3/8 w - - bm Qf3; id "sbd.012";
3n1r1k/2p1p1bp/Rn4p1/6N1/3P3P/2N1B3/2r2PP1/5RK1 w - - bm Na4 Nce4; id "sbd.013";
3q1rk1/3rbppp/ppbppn2/1N6/2P1P3/BP6/P1B1QPPP/R3R1K1 w - - bm Nd4; id "sbd.014";
3r1rk1/p1q4p/1pP1ppp1/2n1b1B1/2P5/6P1/P1Q2PBP/1R3RK1 w - - bm Bh6; id "sbd.015";
3r2k1/2q2p1p/5bp1/p1pP4/PpQ5/1P3NP1/5PKP/3R4 b - - bm Qd6; id "sbd.016";
3r2k1/p1q1npp1/3r1n1p/2p1p3/4P2B/P1P2Q1P/B4PP1/1R2R1K1 w - - bm Bc4; id "sbd.017";
3r4/2k5/p3N3/4p3/1p1p4/4r3/PPP3P1/1K1R4 b - - bm Kd7; id "sbd.018";
3r4/2R1np1p/1p1rpk2/p2b1p2/8/PP2P3/4BPPP/2R1NK2 w - - bm b4; id "sbd.019";
3rk2r/1b2bppp/p1qppn2/1p6/4P3/PBN2PQ1/1PP3PP/R1B1R1K1 b k - bm O-O; id "sbd.020";
3rk2r/1bq2pp1/2pb1n1p/p3pP2/P1B1P3/8/1P2QBPP/2RN1R1K b k - bm Be7 O-O; id "sbd.021";
3rkb1r/pppb1pp1/4n2p/2p5/3NN3/1P5P/PBP2PP1/3RR1K1 w - - bm Nf5; id "sbd.022";
3rr1k1/1pq2ppp/p1n5/3p4/6b1/2P2N2/PP1QBPPP/3R1RK1 w - - bm Rfe1; id "sbd.023";
4r1k1/1q1n1ppp/3pp3/rp6/p2PP3/N5P1/PPQ2P1P/3RR1K1 w - - bm Rc1; id "sbd.024";
4rb1k/1bqn1pp1/p3rn1p/1p2pN2/1PP1p1N1/P1P2Q1P/1BB2PP1/3RR1K1 w - - bm Qe2; id "sbd.025";
4rr2/2p5/1p1p1kp1/p6p/P1P4P/6P1/1P3PK1/3R1R2 w - - bm Rfe1; id "sbd.026";
5r2/pp1b1kpp/8/2pPp3/2P1p2P/4P1r1/PPRKB1P1/6R1 b - - bm Ke7; id "sbd.027";
6k1/1R5p/r2p2p1/2pN2B1/2bb4/P7/1P1K2PP/8 w - - bm Nf6+; id "sbd.028";
6k1/pp1q1pp1/2nBp1bp/P2pP3/3P4/8/1P2BPPP/2Q3K1 w - - bm Qc5; id "sbd.029";
6k1/pp2rp1p/2p2bp1/1n1n4/1PN3P1/P2rP2P/R3NPK1/2B2R2 w - - bm Rd2; id "sbd.030";
8/2p2kpp/p6r/4Pp2/1P2pPb1/2P3P1/P2B1K1P/4R3 w - - bm h4; id "sbd.031";
Q5k1/5pp1/5n1p/2b2P2/8/5N1P/5PP1/2q1B1K1 b - - bm Kh7; id "sbd.032";
r1b1k1nr/1p3ppp/p1np4/4p1q1/2P1P3/N1NB4/PP3PPP/2RQK2R w Kkq - bm O-O; id "sbd.033";
r1b1k2r/p1pp1ppp/1np1q3/4P3/1bP5/1P6/PB1NQPPP/R3KB1R b KQkq - bm O-O; id "sbd.034";
r1b1k2r/ppppqppp/8/2bP4/3p4/6P1/PPQPPPBP/R1B2RK1 b kq - bm O-O; id "sbd.035";
r1b1k2r/ppq1bppp/2n5/2N1p3/8/2P1B1P1/P3PPBP/R2Q1RK1 b kq - bm O-O; id "sbd.036";
r1b1kb1r/pp2qppp/2pp4/8/4nP2/2N2N2/PPPP2PP/R1BQK2R w KQkq - bm O-O; id "sbd.037";
r1b1qrk1/pp4b1/2pRn1pp/5p2/2n2B2/2N2NPP/PPQ1PPB1/5RK1 w - - bm Rd3; id "sbd.038";
r1b2rk1/1pqn1pp1/p2bpn1p/8/3P4/2NB1N2/PPQB1PPP/3R1RK1 w - - bm Rc1; id "sbd.039";
r1b2rk1/2qnbp1p/p1npp1p1/1p4PQ/4PP2/1NNBB3/PPP4P/R4RK1 w - - bm Qh6; id "sbd.040";
r1b2rk1/pp2ppbp/2n2np1/2q5/5B2/1BN1PN2/PP3PPP/2RQK2R w K - bm O-O; id "sbd.041";
r1b2rk1/pp4pp/1q1Nppn1/2n4B/1P3P2/2B2RP1/P6P/R2Q3K b - - bm Na6; id "sbd.042";
r1b2rk1/ppp1qppp/1b1n4/8/B2n4/3NN3/PPPP1PPP/R1BQK2R w KQ - bm O-O; id "sbd.043";
r1b2rk1/ppq1bppp/2p1pn2/8/2NP4/2N1P3/PP2BPPP/2RQK2R w K - bm O-O; id "sbd.044";
r1bq1rk1/1p1n1pp1/p4n1p/2bp4/8/2NBPN2/PPQB1PPP/R3K2R w KQ - bm O-O; id "sbd.045";
r1bq1rk1/1p2ppbp/p2p1np1/6B1/2P1P3/2N5/PP1QBPPP/R3K2R w KQ - bm O-O; id "sbd.046";
r1bq1rk1/1p3ppp/p1np4/3Np1b1/2B1P3/P7/1PP2PPP/RN1QK2R w KQ - bm O-O; id "sbd.047";
r1bq1rk1/4bppp/ppnppn2/8/2P1P3/2N5/PPN1BPPP/R1BQK2R w KQ - bm O-O; id "sbd.048";
r1bq1rk1/pp1n1pbp/2n1p1p1/2ppP3/8/2PP1NP1/PP1N1PBP/R1BQ1RK1 w - - bm d4; id "sbd.049";
r1bq1rk1/pp1pppbp/2n2np1/8/4P3/1NN5/PPP1BPPP/R1BQK2R w KQ - bm O-O; id "sbd.050";
r1bq1rk1/pp2ppbp/2n2np1/2p3B1/4P3/2P2N2/PP1NBPPP/R2QK2R w KQ - bm O-O; id "sbd.051";
r1bq1rk1/pp2ppbp/2n3p1/2p5/2BPP3/2P1B3/P3NPPP/R2QK2R w KQ - bm O-O; id "sbd.052";
r1bq1rk1/pp3ppp/2n1pn2/2p5/1bBP4/2N1PN2/PP3PPP/R1BQ1RK1 w - - bm a3; id "sbd.053";
r1bq1rk1/pp3ppp/2n2n2/3p4/8/P1NB4/1PP2PPP/R1BQK2R w KQ - bm O-O; id "sbd.054";
r1bq1rk1/ppp1npb1/3p2pp/3Pp2n/1PP1P3/2N5/P2NBPPP/R1BQR1K1 b - - bm Nf4; id "sbd.055";
r1bq1rk1/ppp2ppp/2n1pn2/3p4/1bPP4/2NBPN2/PP3PPP/R1BQK2R w KQ - bm O-O; id "sbd.056";
r1bq1rk1/pppp1pbp/2n2np1/4p3/2P5/P1N2NP1/1P1PPPBP/R1BQK2R w KQ - bm O-O; id "sbd.057";
r1bqk2r/2ppbppp/p1n2n2/1p2p3/4P3/1B3N2/PPPPQPPP/RNB2RK1 b kq - bm O-O; id "sbd.058";
r1bqk2r/5ppp/p1np4/1p1Np1b1/4P3/2P5/PPN2PPP/R2QKB1R b KQkq - bm O-O; id "sbd.059";
r1bqk2r/bp3ppp/p1n1pn2/3p4/1PP5/P1N1PN2/1B3PPP/R2QKB1R b KQkq - bm O-O; id "sbd.060";
r1bqk2r/p2pppbp/2p3pn/2p5/4P3/2P2N2/PP1P1PPP/RNBQR1K1 b kq - bm O-O; id "sbd.061";
r1bqk2r/pp2bppp/2n1p3/1B1n4/3P4/2N2N2/PP3PPP/R1BQ1RK1 b kq - bm O-O; id "sbd.062";
r1bqk2r/pp2bppp/2n1p3/3n4/3P4/2NB1N2/PP3PPP/R1BQ1RK1 b kq - bm O-O; id "sbd.063";
r1bqk2r/pp2ppbp/2np1np1/2p5/4P3/1B1P1N1P/PPP2PP1/RNBQK2R w KQkq - bm O-O; id "sbd.064";
r1bqk2r/ppn1bppp/2n5/2p1p3/8/2NP1NP1/PP1BPPBP/R2Q1RK1 b kq - bm O-O; id "sbd.065";
r1bqk2r/ppp1bppp/2n5/3p4/3P4/2PB1N2/P1P2PPP/R1BQ1RK1 b kq - bm O-O; id "sbd.066";
r1bqk2r/ppp2ppp/2nb4/3np3/8/PP2P3/1BQP1PPP/RN2KBNR b KQkq - bm O-O; id "sbd.067";
r1bqk2r/ppp2ppp/3b4/4p3/8/1PPP1N2/2PB1PPP/R2Q1RK1 b kq - bm O-O; id "sbd.068";
r1bqk2r/pppp1ppp/5n2/4p3/Bb2P3/5Q2/PPPPNPPP/R1B1K2R b KQkq - bm O-O; id "sbd.069";
r1bqkb1r/pp3ppp/2n5/2pp4/3Pn3/2N2N2/PPP1BPPP/R1BQK2R w KQkq - bm O-O; id "sbd.070";
r1bqkb1r/pp3ppp/2npp3/3nP3/2BP4/5N2/PP3PPP/RNBQK2R w KQkq - bm O-O; id "sbd.071";
r1bqkbnr/3p1ppp/p1p1p3/8/4P3/3B4/PPP2PPP/RNBQK2R w KQkq - bm O-O; id "sbd.072";
r1bqkbnr/ppp2ppp/2n5/8/2BpP3/5N2/PP3PPP/RNBQK2R w KQkq - bm O-O; id "sbd.073";
r1bqrbk1/1pp3pp/2n2p2/p2np3/8/PP1PPN2/1BQNBPPP/R3K2R w KQ - bm O-O; id "sbd.074";
r1br2k1/1p2qppp/pN2pn2/P7/2pn4/4N1P1/1P2PPBP/R3QRK1 b - - bm Rb8; id "sbd.075";
r1q1k2r/1b1nbppp/pp1ppn2/8/2PQP3/1PN2NP1/PB3PBP/R2R2K1 b kq - bm O-O; id "sbd.076";
r1q1k2r/pb1nbppp/1p2pn2/8/P1PNP3/2B3P1/2QN1PBP/R4RK1 b kq - bm O-O; id "sbd.077";
r1r3k1/1bq2pbp/pp1pp1p1/2n5/P3PP2/R2B4/1PPBQ1PP/3N1R1K w - - bm Bc3; id "sbd.078";
r1rn2k1/pp1qppbp/6p1/3pP3/3P4/1P3N1P/PB1Q1PP1/R3R1K1 w - - bm Rac1; id "sbd.079";
r2q1rk1/1b1nbpp1/pp2pn1p/8/2BN3B/2N1P3/PP2QPPP/2R2RK1 w - - bm Rfd1; id "sbd.080";
r2q1rk1/1b3ppp/4pn2/1pP5/1b6/2NBPN2/1PQ2PPP/R3K2R w KQ - bm O-O; id "sbd.081";
r2q1rk1/pb1nppbp/6p1/1p6/3PP3/3QBN1P/P3BPP1/R3K2R w KQ - bm O-O; id "sbd.082";
r2q1rk1/pb2bppp/npp1pn2/3pN3/2PP4/1PB3P1/P2NPPBP/R2Q1RK1 w - - bm e4; id "sbd.083";
r2q1rk1/pppb1pbp/2np1np1/4p3/2P5/P1NPPNP1/1P3PBP/R1BQK2R w KQ - bm O-O; id "sbd.084";
r2qk2r/1b1n1ppp/4pn2/p7/1pPP4/3BPN2/1B3PPP/R2QK2R w KQkq - bm O-O; id "sbd.085";
r2qk2r/1b2bppp/p1n1pn2/1p6/1P6/P2BPN2/1B2QPPP/RN3RK1 b kq - bm O-O; id "sbd.086";
r2qk2r/2p2ppp/p1n1b3/1pbpP3/4n3/1BP2N2/PP1N1PPP/R1BQ1RK1 b kq - bm O-O; id "sbd.087";
r2qk2r/3n1ppp/p3p3/3nP3/3R4/5N2/1P1N1PPP/3QR1K1 b kq - bm O-O; id "sbd.088";
r2qk2r/p1pn1ppp/b3pn2/3p4/Nb1P4/1P3NP1/P3PPBP/1RBQ1RK1 b kq - bm O-O Qe7; id "sbd.089";
r2qk2r/ppp1bppp/2n2n2/8/2BP2b1/2N2N2/PP3PPP/R1BQR1K1 b kq - bm O-O; id "sbd.090";
r2qkb1r/pb1n1p2/2p1p2p/4P1pn/PppP4/2N2NB1/1P2BPPP/R2Q1RK1 w kq - bm Ne4; id "sbd.091";
r2qkb1r/pp2nppp/1np1p3/4Pb2/3P4/PB3N2/1P3PPP/RNBQ1RK1 b kq - bm Ned5; id "sbd.092";
r2qkb1r/pp3ppp/2bppn2/8/2PQP3/2N2N2/PP3PPP/R1B1K2R w KQkq - bm O-O; id "sbd.093";
r2qr1k1/p3bppp/1p2n3/3Q1N2/5P2/4B1P1/PP3R1P/R5K1 w - - bm Rd1; id "sbd.094";
r2r2k1/p1pnqpp1/1p2p2p/3b4/3P4/3BPN2/PP3PPP/2RQR1K1 b - - bm c5; id "sbd.095";
r2r2k1/pp1b1ppp/8/3p2P1/3N4/P3P3/1P3P1P/3RK2R b K - bm Rac8; id "sbd.096";
r3k2r/1b1nb1p1/p1q1pn1p/1pp3N1/4PP2/2N5/PPB3PP/R1BQ1RK1 w kq - bm Nf3; id "sbd.097";
r3k2r/1pqnnppp/p5b1/1PPp1p2/3P4/2N5/P2NB1PP/2RQ1RK1 b kq - bm O-O; id "sbd.098";
r3k2r/p1q1nppp/1pn5/2P1p3/4P1Q1/P1P2P2/4N1PP/R1B2K1R b kq - bm O-O; id "sbd.099";
r3k2r/pp2pp1p/6p1/2nP4/1R2PB2/4PK2/P5PP/5bNR w kq - bm Ne2; id "sbd.100";
r3k2r/ppp1bppp/2n5/3n4/3PB3/8/PP3PPP/RNB1R1K1 b kq - bm O-O-O; id "sbd.101";
r3kb1r/pp3ppp/4bn2/3p4/P7/4N1P1/1P2PPBP/R1B1K2R w KQkq - bm O-O; id "sbd.102";
r3kbnr/1pp3pp/p1p2p2/8/3qP3/5Q1P/PP3PP1/RNB2RK1 w kq - bm Rd1; id "sbd.103";
r3kr2/pppb1p2/2n3p1/3Bp2p/4P2N/2P5/PP3PPP/2KR3R b q - bm O-O-O; id "sbd.104";
r3nrk1/pp2qpb1/3p1npp/2pPp3/2P1P2N/2N3Pb/PP1BBP1P/R2Q1RK1 w - - bm Re1; id "sbd.105";
r3r1k1/1pqn1pbp/p2p2p1/2nP2B1/P1P1P3/2NB3P/5PP1/R2QR1K1 w - - bm Rc1; id "sbd.106";
r3r1k1/pp1q1ppp/2p5/P2n1p2/1b1P4/1B2PP2/1PQ3PP/R1B2RK1 w - - bm e4; id "sbd.107";
r3r1k1/pp3ppp/2ppqn2/5R2/2P5/2PQP1P1/P2P2BP/5RK1 w - - bm Qd4; id "sbd.108";
r3rbk1/p2b1p2/5p1p/1q1p4/N7/6P1/PP1BPPBP/3Q1RK1 w - - bm Nc3; id "sbd.109";
r4r1k/pp1bq1b1/n2p2p1/2pPp1Np/2P4P/P1N1BP2/1P1Q2P1/2KR3R w - - bm Ne6; id "sbd.110";
r4rk1/1bqp1ppp/pp2pn2/4b3/P1P1P3/2N2BP1/1PQB1P1P/2R2RK1 w - - bm b3; id "sbd.111";
r4rk1/1q2bppp/p1bppn2/8/3BPP2/3B2Q1/1PP1N1PP/4RR1K w - - bm e5; id "sbd.112";
r4rk1/pp2qpp1/2pRb2p/4P3/2p5/2Q1PN2/PP3PPP/4K2R w K - bm O-O; id "sbd.113";
r7/3rq1kp/2p1bpp1/p1Pnp3/2B4P/PP4P1/1B1RQP2/2R3K1 b - - bm Rad8; id "sbd.114";
r7/pp1bpp2/1n1p2pk/1B3P2/4P1P1/2N5/PPP5/1K5R b - - bm Kg5; id "sbd.115";
rn1q1rk1/p4pbp/bp1p1np1/2pP4/8/P1N2NP1/1PQ1PPBP/R1B1K2R w KQ - bm O-O; id "sbd.116";
rn1q1rk1/pb3p2/1p5p/3n2P1/3p4/P4P2/1P1Q1BP1/R3KBNR b KQ - bm Re8+; id "sbd.117";
rn1q1rk1/pp2bppp/1n2p1b1/8/2pPP3/1BN1BP2/PP2N1PP/R2Q1RK1 w - - bm Bc2; id "sbd.118";
rn1q1rk1/pp3ppp/4bn2/2bp4/5B2/2NBP1N1/PP3PPP/R2QK2R w KQ - bm O-O; id "sbd.119";
rn1qkbnr/pp1b1ppp/8/1Bpp4/3P4/8/PPPNQPPP/R1B1K1NR b KQkq - bm Qe7; id "sbd.120";
rn1qr1k1/pb3p2/1p5p/3n2P1/3p4/P4P2/1P1QNBP1/R3KB1R b KQ - bm d3; id "sbd.121";
rn2kb1r/pp2nppp/1q2p3/3pP3/3P4/5N2/PP2NPPP/R1BQK2R w KQkq - bm O-O; id "sbd.122";
rn3rk1/1bqp1ppp/p3pn2/8/Nb1NP3/4B3/PP2BPPP/R2Q1RK1 w - - bm Rc1; id "sbd.123";
rn3rk1/pbp1qppp/1p1ppn2/8/2PP4/P1Q2NP1/1P2PPBP/R1B1K2R w KQ - bm O-O; id "sbd.124";
rnb1k2r/1pq2ppp/p2ppn2/2b5/3NPP2/2P2B2/PP4PP/RNBQ1R1K b kq - bm O-O; id "sbd.125";
rnb2rk1/ppq1ppbp/6p1/2p5/3PP3/2P2N2/P3BPPP/1RBQK2R w K - bm O-O; id "sbd.126";
rnbq1rk1/5ppp/p3pn2/1p6/2BP4/P1P2N2/5PPP/R1BQ1RK1 w - - bm Bd3; id "sbd.127";
rnbq1rk1/pp2ppbp/2pp1np1/8/P2PP3/2N2N2/1PP1BPPP/R1BQK2R w KQ - bm O-O; id "sbd.128";
rnbq1rk1/ppp1ppbp/6p1/8/8/2P2NP1/P2PPPBP/R1BQK2R w KQ - bm O-O; id "sbd.129";
rnbqk1nr/pp3pbp/2ppp1p1/8/2BPP3/2N2Q2/PPP2PPP/R1B1K1NR w KQkq - bm Nge2; id "sbd.130";
rnbqk2r/ppp2ppp/1b1p1n2/4p3/2B1P3/2PP1N2/PP1N1PPP/R1BQK2R b KQkq - bm O-O; id "sbd.131";
rnbqk2r/pppp2pp/4pn2/5p2/1b1P4/2P2NP1/PP2PPBP/RNBQK2R b KQkq - bm Be7; id "sbd.132";
rnbqr1k1/pp1p1ppp/5n2/3Pb3/1P6/P1N3P1/4NPBP/R1BQK2R w KQ - bm O-O; id "sbd.133";
rnq1nrk1/pp3pbp/6p1/3p4/3P4/5N2/PP2BPPP/R1BQK2R w KQ - bm O-O; id "sbd.134";
</pre>
=Forum Posts=
* [http://www.talkchess.com/forum/viewtopic.php?t=21038 Silent but deadly] by [[Dann Corbit]], [[CCC]], May 7, 2008
* [http://www.talkchess.com/forum/viewtopic.php?t=22952 From the silent but deadly set, a novelty] by [[Dann Corbit]], [[CCC]], August 12, 2008
=References=
<references />
'''[[Test-Positions|Up one level]]'''
[[Category:Vincent van Gogh]]
