OTB human test positions

[David Dahlem]

Tim Krabbe's page has 110 best moves list which can challenge many top software/hardware. You can download them as pgn file as well. Some of the moves are/were hard for my comp with rybka 4 and/or houdini last year.

http://timkr.home.xs4all.nl/chess/mfm101110.htm

Last year i converted these positions to an epd test suite -

rnq2rk1/1pn3bp/p2p2p1/2pPp1PP/P1P1Pp2/2N2N2/1P1B1P2/R2QK2R b KQ - bm Nc6; id "Pos.1 Averbakh-Spassky, Leningrad 1956";
8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - bm Bh3; id "Pos.2 Topalov-Shirov, Linares 1998";
5rk1/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 b - - bm Qg3; id "Pos.3 Levitzky-Marshall, Breslau 1912";
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - bm Rxb3+; id "Pos.4 Brzozka-Bronstein, Miskolc 1963";
2k2b1r/pb1r1p2/5P2/1qnp4/Npp3Q1/4B1P1/1P3PBP/R4RK1 w - - bm Qg7; id "Pos.5 Ivanchuk-Shirov, WijkaanZee 1996";
r1bq1rk1/1p3ppp/p1pp2n1/3N3Q/B1PPR2b/8/PP3PPP/R1B3K1 w - - bm Rxh4; id "Pos.6 Anand-Ivanchuk, Las Palmas 1996";
r4k1r/1b2bPR1/p4n2/3p4/4P2P/1q2B2B/PpP5/1K4R1 w - - bm Bh6; id "Pos.7 Vladimirov-Epishin, USSR 1987";
r1b2r1k/4qp1p/p2ppb1Q/4nP2/1p1NP3/2N5/PPP4P/2KR1BR1 w - - bm Nc6; id "Pos.8 Kholmov-Bronstein, Kiev 1964";
8/5B2/6Kp/6pP/5b2/p7/1k3P2/8 b - - bm Be3; id "Pos.9 Hindle-Möhring, Tel Aviv 1964";
4r1k1/q6p/2p4P/2P2QP1/1p6/rb2P3/1B6/1K4RR w - - bm Qxh7+; id "Pos.10 Bischoff-Nogueiras, Havana 1998";
6k1/3Q4/5p2/5P2/8/1KP5/PP4qp/2B5 w - - bm Bg5; id "Pos.11 Simagin-Bronstein, Moscow 1947";
k4b1r/p3pppp/B1p2n2/3rB1N1/7q/8/PPP2P2/R2Q1RK1 w - - bm c4; id "Pos.12 Rossolimo-Livingstone, New York 1961";
1nbk1b1r/r3pQpp/pq2P3/1p1P2B1/2p5/2P5/5PPP/R3KB1R b KQ - bm Rd7; id "Pos.13 Sosonko-Rivas, Amsterdam 1978";
5r2/7k/1pPP3P/8/4p3/3p4/P4R1P/7K b - - bm e3; id "Pos.14 Gligoric-Stein, Lvov 1962";
rnb1kr2/pp1p1pQp/6q1/4PpB1/1P6/8/1PP2PPP/2KR3R w q - bm e6; id "Pos.15 Tisdall-Lee, London 1981";
7k/1p1P2pp/p7/3P4/1Q5P/5pPK/PP3r2/1q5B b - - bm h5; id "Pos.16 Kamsky-J. Polgar, Buenos Aires 1994";
r2q1rk1/pp2bpp1/4p2p/2pPB2P/2P3n1/3Q2N1/PP3PP1/2KR3R w - - bm Bxg7; id "Pos.17 Karpov-Hübner, Tilburg 1982";
r2qk2r/1b3ppp/p2p1b2/2nNp3/1R2P3/2P5/1PN2PPP/3QKB1R w Kkq - bm Rxb7; id "Pos.18 Kasparov-Shirov, Horgen 1994";
r3kbnr/p1pp1qpp/b1n1P3/6N1/1p6/8/Pp3PPP/RNBQR1K1 b kq - bm 0-0-0; id "Pos.19 Espig-Möhring, Leipzig 1973";
r2qkb1r/pb1p1p1p/1pn2np1/2p1p3/2P1P3/2NP1NP1/PP3PBP/R1BQ1RK1 w kq - bm Nxe5; id "Pos.20 Zuniga-Seirawan, Buenos Aires 1993";
r1bq1rk1/3nbppp/pp1p1n2/2pPp3/P1P1P3/2N3P1/1P2QPBP/R1B1K1NR w KQ - bm Kd1; id "Pos.21 Kortchnoi-Plachetka, Luhacovice 1969";
5r2/q3ppkp/3p2p1/3P4/Nr2PPn1/1R3BP1/P3N2P/R2Q2K1 w - - bm Nb6; id "Pos.22 Oren-Dyner, Tel Aviv 1952";
2kr3r/ppp1qpp1/2p5/2b2b2/2P1pPP1/1P2P1p1/PBQPB3/RN2K1R1 b Q - bm Rh1; id "Pos.23 Larsen-Spassky, Beograd 1970";
rn1q1r1k/2pp4/5pQ1/1b1PB3/8/4P3/PP1K1P1P/R7 b - - bm Bd3; id "Pos.24 Gutman-Vitolinsh, Riga 1979";
r3kb1r/1p2pppp/1pn5/3p1b2/3P4/4PN2/PP1B1PPP/R3KB1R b KQkq - bm Bd7; id "Pos.25 Janowsky-Capablanca, New York 1916";
r2q1rk1/3nbpp1/4p2p/p1p1P3/1p1P3P/3B1b1R/PPQB1PP1/R3K3 w Q - bm Bxh6; id "Pos.26 Portisch-Johannessen, Havana 1966";
rn1r2k1/pq1p1ppp/3Rp3/2p5/2P1b3/4QNP1/P3PPBP/3R2K1 w - - bm Rxe6; id "Pos.27 H. Olafsson-Levitt, Reykjavik 1990";
8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6 w - - bm Ng2; id "Pos.28 Karpov-Kasparov, Moscow 1984";
3rrk2/2p1n1bQ/1p3pp1/1q2B1N1/p1b1PP2/6PB/P1P5/3R1RK1 w - - bm Rd5; id "Pos.29 Polugayevsky-Maslov, Moscow 1963";
r2q1k1r/p3bpp1/2p4p/2Bp4/4B1PP/4Q3/PPP5/2K1R3 w - - bm Bh7; id "Pos.30 Hommeles-Skoblikov, Rotterdam 1992";
1nq3k1/r3b1p1/pp2prNp/2p5/4Q3/2P1P1B1/P4PPP/2R2RK1 w - - bm Qa8; id "Pos.31 Panczyk-Schurade, Zakopane 1978";
4r1k1/1p4p1/pPp2r1p/P1Pp1p2/3P1Pn1/2NR1P2/3Q2Bq/R4K2 b - - bm Re4; id "Pos.32 Kramnik-Shirov, Linares 1994";
rn1qk1nr/1b3ppp/p2b4/3p4/P1pP4/5N2/2PNBPPP/R1BQ1RK1 w kq - bm Bxc4; id "Pos.33 Geller-Dreev, New York 1990";
2rr2k1/1pq1bpp1/p2pbn1p/P7/R3PB2/2N2B1P/1PPQ2P1/3R3K b - - bm Bxh3; id "Pos.34 Short-Tisdall, Westmann Islands 1985";
r1rq1bk1/1n1b1p1p/3p1np1/1p1Pp3/1Pp1P3/2P1BNNP/R2Q1PP1/1B2R1K1 w - - bm Ba7; id "Pos.35 Karpov-Unzicker, Nice 1974";
5rk1/pp3pp1/4Pb1p/q2p3Q/3P4/2r5/PP4PP/1K1R1B1R b - - bm Ra3; id "Pos.36 Pillsbury-Lasker, St. Petersburg 1896";
4Q3/7k/1p1pQ3/p1pPp2K/P1P1P3/1P6/7q/8 w - - bm Qh3; id "Pos.37 Möhring-Kaikamdzozov, Zamardi 1978";
2k5/q1p5/3p4/pPpPp1pp/N1P1Pp2/P4PbP/KQ4P1/8 b - - bm Qb6; id "Pos.38 Petrosyan-Hasaj, Schilde 1970";
r1bqr1k1/pppnbpp1/7p/2P5/3PN3/3Q1N2/PPB1p1PP/R4RK1 w - - bm Nd6; id "Pos.39 Spassky-Bronstein, Leningrad 1960";
3r2k1/R5pp/1p3pn1/3b2q1/3P4/P4QP1/BP3P2/6K1 w - - bm Ra8; id "Pos.40 Tal-Brinck Claussen, Havana 1966";
8/1N6/1p1P1n2/p1p1p3/P1P5/1P2k3/2K5/8 w - - bm Nxc5; id "Pos.41 Alburt-Lerner, Kiev 1978";
r1bqkb1r/ppp2pp1/5n1p/n2P4/2B1p3/3P1N2/PPP2PPP/RNBQK2R w KQkq - bm dxe4; id "Pos.42 Bronstein-Rojahn, Moscow ol 1956";
3qk2r/2pnbpp1/rpn1p2p/p2pP3/P2P1B1P/1NP2N2/1P3PP1/R2QK2R b KQk - bm Qa8; id "Pos.43 Zeitlin-Monin, USSR 1978";
4r3/2q2pk1/2pp2pp/1b1P4/1P2N3/rB1n3P/3Q1PP1/2R1R1K1 w - - bm Nf6; id "Pos.44 Timman-Kasparov, Hilversum 1985";
3nrr2/ppQ3pk/6qp/1P1B1b2/2PB3R/6P1/P6P/R5K1 b - - bm Bb1; id "Pos.45 Aronson-Tal, Moscow 1957";
r2q1rk1/p1p2p2/bp2p1np/n2pP1p1/2PP3B/P1P2P1N/2Q3PP/RB2K2R w KQ - bm Nf4; id "Pos.46 Kotov-Keres, Budapest 1950";
2rr3k/4Rp2/2qppn1p/1p6/4P3/2P3RP/1Pp2PP1/3Q2K1 w - - bm Qf3; id "Pos.47 Robovic-Van Wely, Munich 1992";
1r1qr1k1/3nppb1/b2p2p1/2pn4/8/2N1BNPB/PPQ1PP2/R3K2R w KQ - bm Qxg6; id "Pos.48 Malinin-Savinov, Leningrad 1988";
2r1nr2/pb1p1kpQ/4qp1B/1p6/3P3R/P5N1/6PP/R5K1 b - - bm Rh8; id "Pos.49 Geller-Euwe, Zurich 1953";
8/pbk3B1/2pNpP2/1p2P3/2p5/6P1/PP2qbBP/3R3K w - - bm Ra1; id "Pos.50 Hollis-Baumbach, cr 1976";
r1bqk2r/pp3pp1/2pbpn1p/8/3P3Q/3B1N2/PPP2PPP/R1B1K2R b KQkq - bm Ke7; id "Pos.51 Kamsky-Karpov, Dortmund 1993";
3qnr2/5p1k/1rp1pPpp/pbNp4/3P1QP1/1P2RN2/P1P2P1P/6RK w - - bm Nd7; id "Pos.52 Stanishevsky-Nikonov, Moscow 1981";
6k1/3bppbp/pp1pq1p1/8/1P1Bn1P1/N1r2P2/P1N1P2P/R2QR1K1 b - - bm h5; id "Pos.53 Portisch-Tal, Amsterdam 1964";
4rrk1/1p1bq1bp/3BN1p1/3P2NP/p3p3/P1P3Q1/1P3nP1/5RK1 b - - bm Nh1; id "Pos.54 Weide-Ligterink, Leeuwarden 1979";
r2qk2r/1b1p1ppp/p2bpn2/n1pPN3/1pP5/6P1/1P2PPBP/RNBQ1RK1 w kq - bm Nxd7; id "Pos.55 Shabalov-Ronin, Kiev 1983";
1r6/4q2p/2P3pk/4p1b1/2B3P1/5QPK/8/5R2 w - - bm Qh1; id "Pos.56 Euwe-Alekhine, Holland 1935";
3B1rk1/2q4p/p3p1p1/1pb4n/2p1P1N1/3p2PP/PPB1QPK1/R3R3 b - - bm Qb8; id "Pos.57 Voronov-Estrin, Leningrad 1971";
rnbq1rk1/3pppbp/3P2p1/1pp1P1B1/6n1/2N2N2/PP3PPP/R2QKB1R b KQ - bm Nxe5; id "Pos.58 Greenfeld-J. Polgar, Haifa 1989";
4r1k1/2q1pp2/3n2pQ/2rP2R1/6P1/1P3R1P/p3NP2/6K1 w - - bm Rxf7; id "Pos.59 Keres-D.Byrne, San Antonio 1972";
rnb2rk1/ppq3b1/2p2npp/2pP1p2/1P1Np3/PQN1P3/1B2BPPP/R3K2R b KQ - bm cxd4; id "Pos.60 Porath-Larsen, Moscow 1956";
r2qr1k1/pp1P1p2/b4bp1/6Bp/4p2P/1P3P1N/P2Q2P1/3RK2R b K - bm Qb6; id "Pos.61 Kramnik-Shirov, Linares 1998";
1rr3k1/1b2qpbp/pQpp1np1/4p2P/2P1P1P1/2N1BP2/PP6/2KR1B1R b - - bm Nd5; id "Pos.62 Timman-Kasparov, Moscow 1981";
r1r1q3/1kbn2p1/p2Bp1p1/1p1n1pP1/2NP1P2/1R2P2P/R5B1/1Q4K1 b - - bm Kc6; id "Pos.63 Kasparov-Petrosyan, Tilburg 1981";
r3r1k1/1pq2pp1/2p2n2/1PNn4/2QN2b1/6P1/3RPP2/2R3KB b - - bm Re3; id "Pos.64 Réti-Alekhine, Baden-Baden 1925";
r3kb1r/pp1n2pp/2p1p3/3p1p2/1q1P1P1B/2N1PQ2/PPP3PP/4RRK1 w kq - bm e4; id "Pos.65 Richter-Baratz, Prague 1931";
r1b1k2r/p2qppbp/1pN3pn/2p1P3/8/2N4P/PPP2PP1/R1BQR1K1 w kq - bm Nxe7; id "Pos.66 Kholmov-Keres, Tbilisi 1959";
r6r/ppN1k1pp/2n1bn2/6B1/2B5/q4p2/PPP2PPP/2KR3R w - - bm Rhe1; id "Pos.67 Tal-Lutikov, Tallinn 1964";
r4r1k/4RBb1/n7/6p1/1q1PP1b1/p4NB1/5PP1/3Q1RK1 w - - bm Rd7; id "Pos.68 Gelfand-Shirov, Polanica 1998";
q3rn1k/2QR4/pp2pp2/8/P1P5/1P4N1/6n1/6K1 w - - bm Nf5; id "Pos.69 Karpov-Csom, Bad Lauterberg 1977";
1r4nk/1p1qb2p/3p1r2/p1pPp3/2P1Pp2/5P1P/PP1QNBRK/5R2 b - - bm Qxh3+; id "Pos.70 Averbakh-Kotov, Zurich 1953";
2R2nk1/p4qp1/5pNp/2r1pQ1P/4P3/8/3p1PPK/8 w - - bm Qe6; id "Pos.71 Kengis-Gufeld, USSR 1983";
7b/2rNqp1k/p6p/1p6/4nN1P/P2QP3/1P4R1/1K6 w - - bm Ne6; id "Pos.72 Timman-Hübner, Wijk aan Zee 1982";
2k4r/2P2ppp/4bn2/8/rp1R4/2p3P1/P1p1PPBP/R1B3K1 b - - bm b3; id "Pos.73 Garcia Palermo-Vera, Havana 1981";
r1bq1rk1/pppnbpp1/4pn1p/3p2B1/2PP4/2N1PN2/PPQ2PPP/R3KB1R w KQ - bm cxd5; id "Pos.74 Kasparov-Portisch, Brussels 1986";
r1b1kb1r/ppp1qp1p/2n3p1/8/5Q2/2N2N2/PPPnBPPP/R3K2R w KQkq - bm 0-0-0; id "Pos.75 Kotkov-Vistanetskis, Vilnius 1961";
rnb2rk1/pp2bppp/4p3/q1P1P1B1/2B5/2n2N2/PPQ2PPP/R3K2R w KQ - bm 0-0; id "Pos.76 Kasparov-Karpov, Seville 1987";
5q2/3P1P2/4P3/5K2/4N3/P2k4/1p1N4/8 w - - bm a4; id "Pos.77 Janowsky-Ed. Lasker, New York 1924";
r6k/pQ3pb1/2NBr2p/5N2/2PP1pn1/4p3/P3P1Bq/R2R1K2 b - - bm Rg6; id "Pos.78 Ivanchuk-Yusupov, Brussels 1991";
r3r1k1/pp3pbp/1qp3p1/2B5/2BP2b1/Q1n2N2/P4PPP/3R1K1R b - - bm Be6; id "Pos.79 D.Byrne-Fischer, New York 1956";
r4rk1/pp5p/4b3/q2pp3/3PN3/P5Qp/1P3PP1/2R3K1 b - - bm Bg4; id "Pos.80 Taimanov-Larsen, Vinkovci 1970";
r3k2r/pp2bppp/2p5/3q1b2/3P4/2Q2N2/PP3PPP/R1B1R1K1 w kq - bm Bh6; id "Pos.81 Browne-Bisguier, Chicago 1974";
r2qk2r/ppp2p2/3p1n1p/5bp1/1bPQ3P/2N3B1/PP2PPP1/2R1KB1R b Kkq h3 bm Kd7; id "Pos.82 Keres-Richter, Munich 1942";
r2q3k/bppbnQpp/p7/6B1/3Pp3/2P5/PP3PPP/RN4K1 b - - bm Bc5; id "Pos.83 Neikirch-Radulov, Sinaya 1964";
6k1/4pp1p/3p2p1/2pPP2n/1qN2P1P/1P1Q1KPr/8/6R1 b - - bm Qe1; id "Pos.84 Pachman-Timman, Geneve 1978";
r3qr1k/pp3pbp/2pn4/7Q/3pP3/2NB3P/PPP3P1/R4RK1 w - - bm Rf6; id "Pos.85 Fischer-Benko, New York 1963";
4rrk1/1bpR1p2/1pq1pQp1/p3P2p/P1PR3P/5N2/2P2PP1/6K1 w - h6 bm Kh2; id "Pos.86 Short-Timman, Tilburg 1991";
1r4q1/2kB3Q/3p1r2/3P1Pp1/1R2p3/p1P1P2P/P5P1/6K1 w - - bm Rb7+; id "Pos.87 Mason-Winawer, Vienna 1882";
6k1/7p/4p3/1p1n1Pp1/8/7K/Pr5P/3Q4 b - - bm Rg2; id "Pos.88 Bellon-Garcia, Cienfuegos 1976";
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq - bm h4; id "Pos.89 Polugayevsky-Torre, Moscow 1981";
r1b2k2/pppq1pbp/2n3p1/2nNp3/2P5/5N2/PPQ1BPPP/3R1RK1 b - - bm Ne6; id "Pos.90 Karpov-Kasparov, New York 1990";
r3kb1r/ppqnpppb/2p2n1p/8/2BP1N1P/6N1/PPP2PP1/R1BQR1K1 b kq - bm Bg8; id "Pos.91 Porreca-Bronstein, Belgrade 1954";
r2q3k/ppp3nb/2np2r1/6Q1/2PP1P1P/1P2Np2/PB3P2/2KR3R w - - bm d5; id "Pos.92 Stoltz-Steiner, Saltsjöbaden 1952";
1k1r3r/ppqb4/5Ppp/3p4/P2np3/3BR1Q1/2PB1PPP/R5K1 w - - bm Rxe4; id "Pos.93 Fischer-Schweber, Buenos Aires 1970";
q4rk1/1br1bp1p/p3pp2/2n1PP2/1n1N4/1P4P1/1B2Q1BP/3R1RK1 w - - bm Nc6; id "Pos.94 Vyzhmanavin-Sorokin, Toliatti 1985";
1r3r1k/4qppp/p2Rb3/1p2B1b1/3NP3/2P3QP/PP4P1/5B1K b - - bm f6; id "Pos.95 Zaichik-Psakhis, Riga 1980";
2bq1rk1/3n1p1p/6p1/4P3/1pp1nP1P/1P6/r5P1/1NNRKBQR b K - bm c3; id "Pos.96 Karpov-Kasparov, Linares 1993";
r3n3/3b2kp/1qNp2p1/1p1Pp2n/1P2Pp2/3B1N1P/1Q3PP1/2R3K1 w - - bm Rc5; id "Pos.97 Tal-Hjartarson, Reykjavik 1986";
r1bqkb1r/pppp1p2/2n2P1p/6p1/8/6B1/Pp2QPPP/RN2KBNR b KQkq - bm Qe7; id "Pos.98 Rusakov-Verlinsky, Moscow 1947";
r1b2rk1/pp1ppp1p/5bp1/q7/3nP2Q/1BN1B3/PPP2PPP/R4RK1 w - - bm Qxf6; id "Pos.99 Nezhmetdinov-Chernikov, Rostov 1962";
rnb1r1n1/pp2q1k1/3p1p1p/2pP2N1/2P5/3QPN1P/PP3RP1/5RK1 w - - bm Ne5; id "Pos.100 Timman-Van Wijgerden, Rotterdam 1979";
2kr3N/pbpq4/1p2p2b/3pPp2/2nP1n2/P1NB1QP1/1PP2B1P/R3K2R b KQ - bm Nd2; id "Pos.101 Bogdanovic-Planinc, Novi Sad 1965";
1r1k4/p7/QpPq1p2/3Ppp2/P1P2P2/1K4r1/6B1/7R w - - bm Bf3; id "Pos.102 Leonhardt-Tarrasch, Berlin 1920";
7r/4k3/P7/8/8/5R2/1r3P2/R3K3 w Q - bm 0-0-0; id "Pos.103 Pupols-Meyers, Lone Pine 1976";
1nrqk2r/p3bpp1/bpn1p3/3pP2p/3P4/PP3N1P/1B2NPP1/RB1QR1K1 b k - bm Kd7; id "Pos.104 Filguth-Kortchnoi, Sao Paulo 1979";
r4r1k/2q2ppp/1np1b3/p1b1pNB1/2B1P3/8/PPP1Q1PP/3R1R1K w - - bm Nxg7; id "Pos.105 Stein-Portisch, Stockholm 1962";
1rb2rk1/p1p3pp/2pb4/3p4/3Pp3/4B2q/PPPQBP1P/2KR3R b - - bm Rxf2; id "Pos.106 Bird-Morphy, London 1858";
r4b1r/p1P3pp/1pN1pqb1/1Bkp1p2/P3n2Q/7P/2P3KB/7R w - - bm Nb8; id "Pos.107 Braga-Timman, Mar del Plata 1982";
r3k2r/1pp2ppp/pb1p1qn1/4p2b/2B1P3/N2P1NPP/PPP1QPK1/R4R2 b kq - bm Rg8; id "Pos.108 Gomes-Neto, Rio 1942";
r1r3k1/p3bppp/2bp3Q/q2pP1P1/1p1BP3/8/PPP1B2P/2KR2R1 w - - bm e6; id "Pos.109 Ostapenko-Kurkin, USSR 1970";
2r1k3/1p1bppb1/p2p1np1/q3n1P1/3NP3/2N1BP2/PPPQB3/1K1R3r w - - bm gxf6; id "Pos.110 Tal-NN, Stuttgart 1958";

[Taner Altinsoy]

Tim Krabbe's page has 110 best moves list which can challenge many top software/hardware. You can download them as pgn file as well. Some of the moves are/were hard for my comp with rybka 4 and/or houdini last year.

http://timkr.home.xs4all.nl/chess/mfm101110.htm

Last year i converted these positions to an epd test suite -

rnq2rk1/1pn3bp/p2p2p1/2pPp1PP/P1P1Pp2/2N2N2/1P1B1P2/R2QK2R b KQ - bm Nc6; id "Pos.1 Averbakh-Spassky, Leningrad 1956";
8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - bm Bh3; id "Pos.2 Topalov-Shirov, Linares 1998";
5rk1/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 b - - bm Qg3; id "Pos.3 Levitzky-Marshall, Breslau 1912";
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - bm Rxb3+; id "Pos.4 Brzozka-Bronstein, Miskolc 1963";
2k2b1r/pb1r1p2/5P2/1qnp4/Npp3Q1/4B1P1/1P3PBP/R4RK1 w - - bm Qg7; id "Pos.5 Ivanchuk-Shirov, WijkaanZee 1996";
r1bq1rk1/1p3ppp/p1pp2n1/3N3Q/B1PPR2b/8/PP3PPP/R1B3K1 w - - bm Rxh4; id "Pos.6 Anand-Ivanchuk, Las Palmas 1996";
r4k1r/1b2bPR1/p4n2/3p4/4P2P/1q2B2B/PpP5/1K4R1 w - - bm Bh6; id "Pos.7 Vladimirov-Epishin, USSR 1987";
r1b2r1k/4qp1p/p2ppb1Q/4nP2/1p1NP3/2N5/PPP4P/2KR1BR1 w - - bm Nc6; id "Pos.8 Kholmov-Bronstein, Kiev 1964";
8/5B2/6Kp/6pP/5b2/p7/1k3P2/8 b - - bm Be3; id "Pos.9 Hindle-Möhring, Tel Aviv 1964";
4r1k1/q6p/2p4P/2P2QP1/1p6/rb2P3/1B6/1K4RR w - - bm Qxh7+; id "Pos.10 Bischoff-Nogueiras, Havana 1998";
6k1/3Q4/5p2/5P2/8/1KP5/PP4qp/2B5 w - - bm Bg5; id "Pos.11 Simagin-Bronstein, Moscow 1947";
k4b1r/p3pppp/B1p2n2/3rB1N1/7q/8/PPP2P2/R2Q1RK1 w - - bm c4; id "Pos.12 Rossolimo-Livingstone, New York 1961";
1nbk1b1r/r3pQpp/pq2P3/1p1P2B1/2p5/2P5/5PPP/R3KB1R b KQ - bm Rd7; id "Pos.13 Sosonko-Rivas, Amsterdam 1978";
5r2/7k/1pPP3P/8/4p3/3p4/P4R1P/7K b - - bm e3; id "Pos.14 Gligoric-Stein, Lvov 1962";
rnb1kr2/pp1p1pQp/6q1/4PpB1/1P6/8/1PP2PPP/2KR3R w q - bm e6; id "Pos.15 Tisdall-Lee, London 1981";
7k/1p1P2pp/p7/3P4/1Q5P/5pPK/PP3r2/1q5B b - - bm h5; id "Pos.16 Kamsky-J. Polgar, Buenos Aires 1994";
r2q1rk1/pp2bpp1/4p2p/2pPB2P/2P3n1/3Q2N1/PP3PP1/2KR3R w - - bm Bxg7; id "Pos.17 Karpov-Hübner, Tilburg 1982";
r2qk2r/1b3ppp/p2p1b2/2nNp3/1R2P3/2P5/1PN2PPP/3QKB1R w Kkq - bm Rxb7; id "Pos.18 Kasparov-Shirov, Horgen 1994";
r3kbnr/p1pp1qpp/b1n1P3/6N1/1p6/8/Pp3PPP/RNBQR1K1 b kq - bm 0-0-0; id "Pos.19 Espig-Möhring, Leipzig 1973";
r2qkb1r/pb1p1p1p/1pn2np1/2p1p3/2P1P3/2NP1NP1/PP3PBP/R1BQ1RK1 w kq - bm Nxe5; id "Pos.20 Zuniga-Seirawan, Buenos Aires 1993";
r1bq1rk1/3nbppp/pp1p1n2/2pPp3/P1P1P3/2N3P1/1P2QPBP/R1B1K1NR w KQ - bm Kd1; id "Pos.21 Kortchnoi-Plachetka, Luhacovice 1969";
5r2/q3ppkp/3p2p1/3P4/Nr2PPn1/1R3BP1/P3N2P/R2Q2K1 w - - bm Nb6; id "Pos.22 Oren-Dyner, Tel Aviv 1952";
2kr3r/ppp1qpp1/2p5/2b2b2/2P1pPP1/1P2P1p1/PBQPB3/RN2K1R1 b Q - bm Rh1; id "Pos.23 Larsen-Spassky, Beograd 1970";
rn1q1r1k/2pp4/5pQ1/1b1PB3/8/4P3/PP1K1P1P/R7 b - - bm Bd3; id "Pos.24 Gutman-Vitolinsh, Riga 1979";
r3kb1r/1p2pppp/1pn5/3p1b2/3P4/4PN2/PP1B1PPP/R3KB1R b KQkq - bm Bd7; id "Pos.25 Janowsky-Capablanca, New York 1916";
r2q1rk1/3nbpp1/4p2p/p1p1P3/1p1P3P/3B1b1R/PPQB1PP1/R3K3 w Q - bm Bxh6; id "Pos.26 Portisch-Johannessen, Havana 1966";
rn1r2k1/pq1p1ppp/3Rp3/2p5/2P1b3/4QNP1/P3PPBP/3R2K1 w - - bm Rxe6; id "Pos.27 H. Olafsson-Levitt, Reykjavik 1990";
8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6 w - - bm Ng2; id "Pos.28 Karpov-Kasparov, Moscow 1984";
3rrk2/2p1n1bQ/1p3pp1/1q2B1N1/p1b1PP2/6PB/P1P5/3R1RK1 w - - bm Rd5; id "Pos.29 Polugayevsky-Maslov, Moscow 1963";
r2q1k1r/p3bpp1/2p4p/2Bp4/4B1PP/4Q3/PPP5/2K1R3 w - - bm Bh7; id "Pos.30 Hommeles-Skoblikov, Rotterdam 1992";
1nq3k1/r3b1p1/pp2prNp/2p5/4Q3/2P1P1B1/P4PPP/2R2RK1 w - - bm Qa8; id "Pos.31 Panczyk-Schurade, Zakopane 1978";
4r1k1/1p4p1/pPp2r1p/P1Pp1p2/3P1Pn1/2NR1P2/3Q2Bq/R4K2 b - - bm Re4; id "Pos.32 Kramnik-Shirov, Linares 1994";
rn1qk1nr/1b3ppp/p2b4/3p4/P1pP4/5N2/2PNBPPP/R1BQ1RK1 w kq - bm Bxc4; id "Pos.33 Geller-Dreev, New York 1990";
2rr2k1/1pq1bpp1/p2pbn1p/P7/R3PB2/2N2B1P/1PPQ2P1/3R3K b - - bm Bxh3; id "Pos.34 Short-Tisdall, Westmann Islands 1985";
r1rq1bk1/1n1b1p1p/3p1np1/1p1Pp3/1Pp1P3/2P1BNNP/R2Q1PP1/1B2R1K1 w - - bm Ba7; id "Pos.35 Karpov-Unzicker, Nice 1974";
5rk1/pp3pp1/4Pb1p/q2p3Q/3P4/2r5/PP4PP/1K1R1B1R b - - bm Ra3; id "Pos.36 Pillsbury-Lasker, St. Petersburg 1896";
4Q3/7k/1p1pQ3/p1pPp2K/P1P1P3/1P6/7q/8 w - - bm Qh3; id "Pos.37 Möhring-Kaikamdzozov, Zamardi 1978";
2k5/q1p5/3p4/pPpPp1pp/N1P1Pp2/P4PbP/KQ4P1/8 b - - bm Qb6; id "Pos.38 Petrosyan-Hasaj, Schilde 1970";
r1bqr1k1/pppnbpp1/7p/2P5/3PN3/3Q1N2/PPB1p1PP/R4RK1 w - - bm Nd6; id "Pos.39 Spassky-Bronstein, Leningrad 1960";
3r2k1/R5pp/1p3pn1/3b2q1/3P4/P4QP1/BP3P2/6K1 w - - bm Ra8; id "Pos.40 Tal-Brinck Claussen, Havana 1966";
8/1N6/1p1P1n2/p1p1p3/P1P5/1P2k3/2K5/8 w - - bm Nxc5; id "Pos.41 Alburt-Lerner, Kiev 1978";
r1bqkb1r/ppp2pp1/5n1p/n2P4/2B1p3/3P1N2/PPP2PPP/RNBQK2R w KQkq - bm dxe4; id "Pos.42 Bronstein-Rojahn, Moscow ol 1956";
3qk2r/2pnbpp1/rpn1p2p/p2pP3/P2P1B1P/1NP2N2/1P3PP1/R2QK2R b KQk - bm Qa8; id "Pos.43 Zeitlin-Monin, USSR 1978";
4r3/2q2pk1/2pp2pp/1b1P4/1P2N3/rB1n3P/3Q1PP1/2R1R1K1 w - - bm Nf6; id "Pos.44 Timman-Kasparov, Hilversum 1985";
3nrr2/ppQ3pk/6qp/1P1B1b2/2PB3R/6P1/P6P/R5K1 b - - bm Bb1; id "Pos.45 Aronson-Tal, Moscow 1957";
r2q1rk1/p1p2p2/bp2p1np/n2pP1p1/2PP3B/P1P2P1N/2Q3PP/RB2K2R w KQ - bm Nf4; id "Pos.46 Kotov-Keres, Budapest 1950";
2rr3k/4Rp2/2qppn1p/1p6/4P3/2P3RP/1Pp2PP1/3Q2K1 w - - bm Qf3; id "Pos.47 Robovic-Van Wely, Munich 1992";
1r1qr1k1/3nppb1/b2p2p1/2pn4/8/2N1BNPB/PPQ1PP2/R3K2R w KQ - bm Qxg6; id "Pos.48 Malinin-Savinov, Leningrad 1988";
2r1nr2/pb1p1kpQ/4qp1B/1p6/3P3R/P5N1/6PP/R5K1 b - - bm Rh8; id "Pos.49 Geller-Euwe, Zurich 1953";
8/pbk3B1/2pNpP2/1p2P3/2p5/6P1/PP2qbBP/3R3K w - - bm Ra1; id "Pos.50 Hollis-Baumbach, cr 1976";
r1bqk2r/pp3pp1/2pbpn1p/8/3P3Q/3B1N2/PPP2PPP/R1B1K2R b KQkq - bm Ke7; id "Pos.51 Kamsky-Karpov, Dortmund 1993";
3qnr2/5p1k/1rp1pPpp/pbNp4/3P1QP1/1P2RN2/P1P2P1P/6RK w - - bm Nd7; id "Pos.52 Stanishevsky-Nikonov, Moscow 1981";
6k1/3bppbp/pp1pq1p1/8/1P1Bn1P1/N1r2P2/P1N1P2P/R2QR1K1 b - - bm h5; id "Pos.53 Portisch-Tal, Amsterdam 1964";
4rrk1/1p1bq1bp/3BN1p1/3P2NP/p3p3/P1P3Q1/1P3nP1/5RK1 b - - bm Nh1; id "Pos.54 Weide-Ligterink, Leeuwarden 1979";
r2qk2r/1b1p1ppp/p2bpn2/n1pPN3/1pP5/6P1/1P2PPBP/RNBQ1RK1 w kq - bm Nxd7; id "Pos.55 Shabalov-Ronin, Kiev 1983";
1r6/4q2p/2P3pk/4p1b1/2B3P1/5QPK/8/5R2 w - - bm Qh1; id "Pos.56 Euwe-Alekhine, Holland 1935";
3B1rk1/2q4p/p3p1p1/1pb4n/2p1P1N1/3p2PP/PPB1QPK1/R3R3 b - - bm Qb8; id "Pos.57 Voronov-Estrin, Leningrad 1971";
rnbq1rk1/3pppbp/3P2p1/1pp1P1B1/6n1/2N2N2/PP3PPP/R2QKB1R b KQ - bm Nxe5; id "Pos.58 Greenfeld-J. Polgar, Haifa 1989";
4r1k1/2q1pp2/3n2pQ/2rP2R1/6P1/1P3R1P/p3NP2/6K1 w - - bm Rxf7; id "Pos.59 Keres-D.Byrne, San Antonio 1972";
rnb2rk1/ppq3b1/2p2npp/2pP1p2/1P1Np3/PQN1P3/1B2BPPP/R3K2R b KQ - bm cxd4; id "Pos.60 Porath-Larsen, Moscow 1956";
r2qr1k1/pp1P1p2/b4bp1/6Bp/4p2P/1P3P1N/P2Q2P1/3RK2R b K - bm Qb6; id "Pos.61 Kramnik-Shirov, Linares 1998";
1rr3k1/1b2qpbp/pQpp1np1/4p2P/2P1P1P1/2N1BP2/PP6/2KR1B1R b - - bm Nd5; id "Pos.62 Timman-Kasparov, Moscow 1981";
r1r1q3/1kbn2p1/p2Bp1p1/1p1n1pP1/2NP1P2/1R2P2P/R5B1/1Q4K1 b - - bm Kc6; id "Pos.63 Kasparov-Petrosyan, Tilburg 1981";
r3r1k1/1pq2pp1/2p2n2/1PNn4/2QN2b1/6P1/3RPP2/2R3KB b - - bm Re3; id "Pos.64 Réti-Alekhine, Baden-Baden 1925";
r3kb1r/pp1n2pp/2p1p3/3p1p2/1q1P1P1B/2N1PQ2/PPP3PP/4RRK1 w kq - bm e4; id "Pos.65 Richter-Baratz, Prague 1931";
r1b1k2r/p2qppbp/1pN3pn/2p1P3/8/2N4P/PPP2PP1/R1BQR1K1 w kq - bm Nxe7; id "Pos.66 Kholmov-Keres, Tbilisi 1959";
r6r/ppN1k1pp/2n1bn2/6B1/2B5/q4p2/PPP2PPP/2KR3R w - - bm Rhe1; id "Pos.67 Tal-Lutikov, Tallinn 1964";
r4r1k/4RBb1/n7/6p1/1q1PP1b1/p4NB1/5PP1/3Q1RK1 w - - bm Rd7; id "Pos.68 Gelfand-Shirov, Polanica 1998";
q3rn1k/2QR4/pp2pp2/8/P1P5/1P4N1/6n1/6K1 w - - bm Nf5; id "Pos.69 Karpov-Csom, Bad Lauterberg 1977";
1r4nk/1p1qb2p/3p1r2/p1pPp3/2P1Pp2/5P1P/PP1QNBRK/5R2 b - - bm Qxh3+; id "Pos.70 Averbakh-Kotov, Zurich 1953";
2R2nk1/p4qp1/5pNp/2r1pQ1P/4P3/8/3p1PPK/8 w - - bm Qe6; id "Pos.71 Kengis-Gufeld, USSR 1983";
7b/2rNqp1k/p6p/1p6/4nN1P/P2QP3/1P4R1/1K6 w - - bm Ne6; id "Pos.72 Timman-Hübner, Wijk aan Zee 1982";
2k4r/2P2ppp/4bn2/8/rp1R4/2p3P1/P1p1PPBP/R1B3K1 b - - bm b3; id "Pos.73 Garcia Palermo-Vera, Havana 1981";
r1bq1rk1/pppnbpp1/4pn1p/3p2B1/2PP4/2N1PN2/PPQ2PPP/R3KB1R w KQ - bm cxd5; id "Pos.74 Kasparov-Portisch, Brussels 1986";
r1b1kb1r/ppp1qp1p/2n3p1/8/5Q2/2N2N2/PPPnBPPP/R3K2R w KQkq - bm 0-0-0; id "Pos.75 Kotkov-Vistanetskis, Vilnius 1961";
rnb2rk1/pp2bppp/4p3/q1P1P1B1/2B5/2n2N2/PPQ2PPP/R3K2R w KQ - bm 0-0; id "Pos.76 Kasparov-Karpov, Seville 1987";
5q2/3P1P2/4P3/5K2/4N3/P2k4/1p1N4/8 w - - bm a4; id "Pos.77 Janowsky-Ed. Lasker, New York 1924";
r6k/pQ3pb1/2NBr2p/5N2/2PP1pn1/4p3/P3P1Bq/R2R1K2 b - - bm Rg6; id "Pos.78 Ivanchuk-Yusupov, Brussels 1991";
r3r1k1/pp3pbp/1qp3p1/2B5/2BP2b1/Q1n2N2/P4PPP/3R1K1R b - - bm Be6; id "Pos.79 D.Byrne-Fischer, New York 1956";
r4rk1/pp5p/4b3/q2pp3/3PN3/P5Qp/1P3PP1/2R3K1 b - - bm Bg4; id "Pos.80 Taimanov-Larsen, Vinkovci 1970";
r3k2r/pp2bppp/2p5/3q1b2/3P4/2Q2N2/PP3PPP/R1B1R1K1 w kq - bm Bh6; id "Pos.81 Browne-Bisguier, Chicago 1974";
r2qk2r/ppp2p2/3p1n1p/5bp1/1bPQ3P/2N3B1/PP2PPP1/2R1KB1R b Kkq h3 bm Kd7; id "Pos.82 Keres-Richter, Munich 1942";
r2q3k/bppbnQpp/p7/6B1/3Pp3/2P5/PP3PPP/RN4K1 b - - bm Bc5; id "Pos.83 Neikirch-Radulov, Sinaya 1964";
6k1/4pp1p/3p2p1/2pPP2n/1qN2P1P/1P1Q1KPr/8/6R1 b - - bm Qe1; id "Pos.84 Pachman-Timman, Geneve 1978";
r3qr1k/pp3pbp/2pn4/7Q/3pP3/2NB3P/PPP3P1/R4RK1 w - - bm Rf6; id "Pos.85 Fischer-Benko, New York 1963";
4rrk1/1bpR1p2/1pq1pQp1/p3P2p/P1PR3P/5N2/2P2PP1/6K1 w - h6 bm Kh2; id "Pos.86 Short-Timman, Tilburg 1991";
1r4q1/2kB3Q/3p1r2/3P1Pp1/1R2p3/p1P1P2P/P5P1/6K1 w - - bm Rb7+; id "Pos.87 Mason-Winawer, Vienna 1882";
6k1/7p/4p3/1p1n1Pp1/8/7K/Pr5P/3Q4 b - - bm Rg2; id "Pos.88 Bellon-Garcia, Cienfuegos 1976";
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq - bm h4; id "Pos.89 Polugayevsky-Torre, Moscow 1981";
r1b2k2/pppq1pbp/2n3p1/2nNp3/2P5/5N2/PPQ1BPPP/3R1RK1 b - - bm Ne6; id "Pos.90 Karpov-Kasparov, New York 1990";
r3kb1r/ppqnpppb/2p2n1p/8/2BP1N1P/6N1/PPP2PP1/R1BQR1K1 b kq - bm Bg8; id "Pos.91 Porreca-Bronstein, Belgrade 1954";
r2q3k/ppp3nb/2np2r1/6Q1/2PP1P1P/1P2Np2/PB3P2/2KR3R w - - bm d5; id "Pos.92 Stoltz-Steiner, Saltsjöbaden 1952";
1k1r3r/ppqb4/5Ppp/3p4/P2np3/3BR1Q1/2PB1PPP/R5K1 w - - bm Rxe4; id "Pos.93 Fischer-Schweber, Buenos Aires 1970";
q4rk1/1br1bp1p/p3pp2/2n1PP2/1n1N4/1P4P1/1B2Q1BP/3R1RK1 w - - bm Nc6; id "Pos.94 Vyzhmanavin-Sorokin, Toliatti 1985";
1r3r1k/4qppp/p2Rb3/1p2B1b1/3NP3/2P3QP/PP4P1/5B1K b - - bm f6; id "Pos.95 Zaichik-Psakhis, Riga 1980";
2bq1rk1/3n1p1p/6p1/4P3/1pp1nP1P/1P6/r5P1/1NNRKBQR b K - bm c3; id "Pos.96 Karpov-Kasparov, Linares 1993";
r3n3/3b2kp/1qNp2p1/1p1Pp2n/1P2Pp2/3B1N1P/1Q3PP1/2R3K1 w - - bm Rc5; id "Pos.97 Tal-Hjartarson, Reykjavik 1986";
r1bqkb1r/pppp1p2/2n2P1p/6p1/8/6B1/Pp2QPPP/RN2KBNR b KQkq - bm Qe7; id "Pos.98 Rusakov-Verlinsky, Moscow 1947";
r1b2rk1/pp1ppp1p/5bp1/q7/3nP2Q/1BN1B3/PPP2PPP/R4RK1 w - - bm Qxf6; id "Pos.99 Nezhmetdinov-Chernikov, Rostov 1962";
rnb1r1n1/pp2q1k1/3p1p1p/2pP2N1/2P5/3QPN1P/PP3RP1/5RK1 w - - bm Ne5; id "Pos.100 Timman-Van Wijgerden, Rotterdam 1979";
2kr3N/pbpq4/1p2p2b/3pPp2/2nP1n2/P1NB1QP1/1PP2B1P/R3K2R b KQ - bm Nd2; id "Pos.101 Bogdanovic-Planinc, Novi Sad 1965";
1r1k4/p7/QpPq1p2/3Ppp2/P1P2P2/1K4r1/6B1/7R w - - bm Bf3; id "Pos.102 Leonhardt-Tarrasch, Berlin 1920";
7r/4k3/P7/8/8/5R2/1r3P2/R3K3 w Q - bm 0-0-0; id "Pos.103 Pupols-Meyers, Lone Pine 1976";
1nrqk2r/p3bpp1/bpn1p3/3pP2p/3P4/PP3N1P/1B2NPP1/RB1QR1K1 b k - bm Kd7; id "Pos.104 Filguth-Kortchnoi, Sao Paulo 1979";
r4r1k/2q2ppp/1np1b3/p1b1pNB1/2B1P3/8/PPP1Q1PP/3R1R1K w - - bm Nxg7; id "Pos.105 Stein-Portisch, Stockholm 1962";
1rb2rk1/p1p3pp/2pb4/3p4/3Pp3/4B2q/PPPQBP1P/2KR3R b - - bm Rxf2; id "Pos.106 Bird-Morphy, London 1858";
r4b1r/p1P3pp/1pN1pqb1/1Bkp1p2/P3n2Q/7P/2P3KB/7R w - - bm Nb8; id "Pos.107 Braga-Timman, Mar del Plata 1982";
r3k2r/1pp2ppp/pb1p1qn1/4p2b/2B1P3/N2P1NPP/PPP1QPK1/R4R2 b kq - bm Rg8; id "Pos.108 Gomes-Neto, Rio 1942";
r1r3k1/p3bppp/2bp3Q/q2pP1P1/1p1BP3/8/PPP1B2P/2KR2R1 w - - bm e6; id "Pos.109 Ostapenko-Kurkin, USSR 1970";
2r1k3/1p1bppb1/p2p1np1/q3n1P1/3NP3/2N1BP2/PPPQB3/1K1R3r w - - bm gxf6; id "Pos.110 Tal-NN, Stuttgart 1958";

And do you have test results for some of the popular engines?

[David Dahlem]

And do you have test results for some of the popular engines?

I did run some tests at the time but can't find the results now,

Regards
Dave

[zullil]

Tim Krabbe's page has 110 best moves list which can challenge many top software/hardware. You can download them as pgn file as well. Some of the moves are/were hard for my comp with rybka 4 and/or houdini last year.

http://timkr.home.xs4all.nl/chess/mfm101110.htm

Last year i converted these positions to an epd test suite -

Have the "best moves" been verified as actually being best?

[zullil]

And do you have test results for some of the popular engines?

I did run some tests at the time but can't find the results now,

Regards
Dave

Well, here's one data point. Critter 1.2.1 (8 threads, 2 GB hash, 3 minutes per position) solved 61 of 110.

Code: Select all

Total time: 158:59, Rated time: 149:42, 61 of 110 matching

[David Dahlem]

Tim Krabbe's page has 110 best moves list which can challenge many top software/hardware. You can download them as pgn file as well. Some of the moves are/were hard for my comp with rybka 4 and/or houdini last year.

http://timkr.home.xs4all.nl/chess/mfm101110.htm

Last year i converted these positions to an epd test suite -

Have the "best moves" been verified as actually being best?

Dann Corbett did some analysis of these positions here -

http://www.talkchess.com/forum/viewtopi ... t&start=10

[Ajedrecista]

Hello:

Intel Pentium D930 (Dual Core). Infinite analysis (without Multi PV) by Houdini 1.5a w32 (with 1024 MB of hash):

FEN: r1b1r1k1/p2q1ppp/np2n3/3p1NBQ/8/6PB/P4P1P/1R2R1K1 w - - 0 1

Houdini_15a_w32:
4/17 00:01 2.324 0 -0,32 Bg5e3 Na6c5 Bh3f1 Bc8a6 Bf1xa6 Nc5xa6
5/17 00:01 4.402 275.000 -0,32 Bg5e3 Na6c5 Bh3f1 Bc8a6 Bf1xa6 Nc5xa6
6/17 00:01 7.155 188.000 -0,34 Bg5e3 Na6c5 Bh3f1 Bc8a6 Bf1xa6 Nc5xa6 Re1c1
6/17 00:01 8.480 212.000 -0,20 Bg5d2 Na6c5 Bh3f1 Bc8a6 Bf1xa6 Nc5xa6 Rb1c1
6/20 00:01 18.365 306.000 -0,12 Nf5xg7 Ne6xg7 Bh3xd7 Re8xe1+ Rb1xe1 Ng7xh5 Re1e8+ Kg8g7 Bd7xc8 Nh5f6 Re8d8
7/22 00:01 35.573 390.000 -0,35 Nf5xg7 Ne6xg7 Bh3xd7 Re8xe1+ Rb1xe1 Ng7xh5 Re1e8+ Kg8g7 Bd7xc8 Nh5f6 Re8d8 Na6b4
7/23+ 00:01 45.469 409.000 -0,05 Bg5e3
7/25 00:01 49.187 416.000 -0,05 Bg5e3 Na6c7 Qh5g4 f7f6 Qg4b4 Bc8a6 Rb1c1 Ra8c8 Bh3g2
8/25 00:01 57.183 433.000 0,00 Bg5e3 Na6c7 Bh3g2 Ne6c5 Nf5xg7 Kg8xg7 Qh5g5+ Kg7f8 Qg5h6+ Kf8g8 Qh6g5+ Kg8f8 Qg5h6+
9/29 00:01 86.144 495.000 -0,05 Bg5e3 Na6c7 Rb1c1 d5d4 Nf5xd4 Qd7d5 Qh5xd5 Nc7xd5 Bh3g2 Bc8b7 Nd4xe6 Re8xe6
10/29 00:01 223.647 638.000 -0,10 Bg5e3 g7g6 Nf5h6+ Kg8g7 Qh5h4 Qd7d8 Qh4g4 Na6c5 Bh3f1 d5d4 Nh6f5+ Kg7g8 Nf5xd4 Ne6xd4 Qg4xd4 Qd8xd4 Be3xd4
11/29- 00:01 398.682 703.000 -0,17 Bg5e3 g7g6
11/29+ 00:01 512.423 749.000 -0,04 Qh5h4
11/32+ 00:02 858.206 829.000 +0,38 Qh5h4
11/32 00:02 1.040.367 860.000 0,00 Qh5h4 h7h6 Bg5xh6 g7xh6 Nf5xh6+ Kg8g7 Bh3xe6 f7xe6 Qh4g5+ Kg7h7 Qg5h5 Re8f8 Nh6f5+ Kh7g8 Qh5g6+ Kg8h8 Qg6h6+ Kh8g8 Qh6g6+ Kg8h8
12/39+ 00:02 1.333.905 894.000 +0,06 Qh5h4
12/39+ 00:02 1.372.179 898.000 +0,19 Qh5h4
12/39 00:03 2.230.770 938.000 +0,16 Qh5h4 Qd7c6 Nf5e7+ Re8xe7 Bg5xe7 Na6c5 Rb1c1 Bc8b7 Bh3f5 g7g6 Bf5xe6 f7xe6 Qh4d4 Ra8c8 Re1e2 Bb7a6
13/42+ 00:04 3.209.265 954.000 +0,23 Qh5h4
13/42+ 00:05 4.166.825 968.000 +0,36 Qh5h4
13/42 00:06 5.351.516 993.000 +0,30 Qh5h4 Qd7c7 Nf5e7+ Re8xe7 Bg5xe7 h7h6 Be7a3 Na6c5 Rb1c1 Ne6g5 Bh3g2 Bc8b7 Ba3b2 f7f6 Qh4h5 Ng5e4 Bb2d4
14/42+ 00:07 6.143.207 999.000 +0,37 Qh5h4
14/42 00:07 6.560.726 999.000 +0,34 Qh5h4 Qd7c7 Nf5e7+ Re8xe7 Bg5xe7 Na6c5 Rb1d1 Qc7d7 Rd1c1 Qd7c6 Re1e5 f7f6 Re5e1 h7h6 Qh4h5 Ne6g5 Bh3g2 Bc8f5
15/42- 00:10 9.197.003 1.035.000 +0,27 Qh5h4 Qd7c7
15/42+ 00:12 11.952.121 1.057.000 +0,41 Qh5h4
15/42 00:12 12.448.280 1.057.000 +0,35 Qh5h4 Qd7c7 Nf5e7+ Re8xe7 Bg5xe7 Na6c5 Be7xc5 Qc7xc5 Qh4a4 Bc8b7 Bh3xe6 f7xe6 Qa4d7 Ra8f8 Rb1b2 Bb7a6 Qd7xe6+ Rf8f7 Qe6e8+ Rf7f8 Qe8d7 Qc5d4 Rb2c2 Ba6d3
16/42 00:13 13.435.210 1.058.000 +0,35 Qh5h4 Qd7c7 Nf5e7+ Re8xe7 Bg5xe7 Na6c5 Be7xc5 Qc7xc5 Qh4a4 Bc8b7 Bh3xe6 f7xe6 Qa4d7 Ra8f8 Rb1b2 Bb7a6 Qd7xe6+ Rf8f7 Qe6e8+ Rf7f8 Qe8d7 Qc5d4 Rb2c2 Ba6d3
17/42+ 00:21 22.001.646 1.099.000 +0,42 Qh5h4
17/42 00:22 23.530.586 1.101.000 +0,35 Qh5h4 Qd7c7 Nf5e7+ Re8xe7 Bg5xe7 Na6c5 Be7xc5 Qc7xc5 Qh4a4 Bc8b7 Bh3xe6 f7xe6 Qa4d7 Ra8f8 Rb1b2 Bb7a6 Qd7xe6+ Rf8f7 Qe6e8+ Rf7f8 Qe8d7 Qc5d4 Rb2c2 Ba6d3
17/47+ 00:39 42.820.496 1.109.000 +0,55 Re1e3
17/66 00:53 58.231.867 1.102.000 +0,59 Re1e3 d5d4 Nf5xg7 Ne6xg7 Bh3xd7 d4xe3 Qh5g4 Bc8xd7 Qg4xd7 e3xf2+ Kg1f1 Na6c5 Qd7d5 Ra8c8 Bg5h6 Nc5e4 Qd5d7 Ng7e6 Qd7xa7 Rc8a8 Qa7d7 Re8d8 Qd7c6 Ne4c5 Rb1a1
18/66 01:01 66.472.948 1.109.000 +0,53 Re1e3 d5d4 Nf5xg7 Ne6xg7 Bh3xd7 d4xe3 Qh5g4 Bc8xd7 Qg4xd7 e3xf2+ Kg1f1 Na6c5 Qd7d5 Ra8c8 Bg5h6 Re8e6 Bh6xg7 Kg8xg7 Rb1b4 Rc8e8 Rb4g4+ Kg7h8 Rg4f4 Re6e1+ Kf1xf2 Nc5e4+ Kf2f3 Re1f1+ Kf3g2 Rf1xf4 g3xf4
19/66 01:56 133.835.398 1.156.000 +0,52 Re1e3 d5d4 Nf5xg7 Ne6xg7 Bh3xd7 d4xe3 Qh5g4 Bc8xd7 Qg4xd7 e3xf2+ Kg1f1 Na6c5 Qd7d5 Ra8c8 Bg5h6 Re8e6 Bh6xg7 Kg8xg7 Rb1b4 Rc8e8 Rb4g4+ Kg7h8 Rg4f4 Re6e1+ Kf1xf2 Nc5e4+ Kf2g2 Re1e2+ Kg2g1 Re2e1+ Rf4f1 Re1xf1+ Kg1xf1
19/66+ 02:59 202.377.019 1.132.000 +0,60 Bg5f6
19/66+ 03:28 223.895.321 1.077.000 +1,19 Bg5f6
19/66 05:03 278.472.871 922.000 +1,76 Bg5f6 g7xf6 Qh5h6 Na6c5 Qh6xf6 Nc5e4 Nf5h6+ Kg8f8 Re1xe4 d5xe4 Nh6f5 Kf8g8 Bh3f1 Qd7d2 Nf5h6+ Qd2xh6 Qf6xh6 Bc8b7 Rb1b5 Ra8c8 Rb5h5 Ne6f8 h2h4 e4e3 f2xe3 Rc8c1 Qh6f6 Bb7a6 Rh5f5 Rc1xf1+ Rf5xf1 Ba6xf1 Kg1xf1 Re8c8 Qf6f5 Rc8c5 Qf5g4+ Nf8g6 Qg4a4 Rc5c1+ Kf1g2
20/66+ 06:52 327.931.048 796.000 +1,87 Bg5f6
20/66+ 08:19 367.004.435 736.000 +2,11 Bg5f6
20/66+ 11:33 452.546.736 656.000 +2,64 Bg5f6
20/69 19:41 678.129.301 574.000 +3,37 Bg5f6 g7g6 Nf5h6+ Kg8f8 Qh5f3 Na6c5 Bf6e5 Ne6g5 Qf3f6 Ng5xh3+ Kg1g2 Re8xe5 Re1xe5 Nc5e6 Rb1e1 Kf8e8 Qf6h8+ Ke8e7 Qh8xh7 Qd7e8 Kg2xh3 d5d4 Re5d5 Bc8d7 Rd5xd4 Ra8d8 f2f4 Bd7c8 Rd4c4 Ke7d6 Kh3g2 Bc8b7+ Kg2g1 Kd6d5
20/70 20:01 687.363.824 572.000 +3,37 Bg5f6 g7g6 Nf5h6+ Kg8f8 Qh5f3 Na6c5 Bf6e5 Ne6g5 Qf3f6 Ng5xh3+ Kg1g2 Re8xe5 Re1xe5 Nc5e6 Rb1e1 Kf8e8 Qf6h8+ Ke8e7 Qh8xh7 Qd7e8 Kg2xh3 d5d4 Re5d5 Bc8d7 Rd5xd4 Ra8d8 f2f4 Bd7c8 Rd4c4 Ke7d6 Kh3g2 Bc8b7+ Kg2g1 Kd6d5

===============================================

If Houdini sees Bf6 in three minutes when running on my Dual Core, I wonder how many seconds will take the 64-bit version in a fast machine.

Regards from Spain.

Ajedrecista.

[zullil]

===============================================

If Houdini sees Bf6 in three minutes when running on my Dual Core, I wonder how many seconds will take the 64-bit version in a fast machine.

Regards from Spain.

Ajedrecista.

I don't use Houdini, but Critter 1.2.1 (8 threads) finds Bf6 in about 25 seconds:

Code: Select all

info currmove g5f6 currmovenumber 10 nodes 204075435 nps 9425246 hashfull 973 tbhits 0
info nodes 212501394 nps 9374510 hashfull 977 tbhits 0
info nodes 223161938 nps 9423272 hashfull 981 tbhits 0
info multipv 1 depth 19 seldepth 49 nodes 230678614 time 24515 nps 9409692 hashfull 0 tbhits 0 score cp 76 lowerbound pv g5f6 g7f6 h5h6 a6c5 h6f6 d7b7 f5h6 g8f8 f6h8 f8e7 h6f5 e7d7 h8f6 b7c6 f5d4 c6d6 f6f7 e8e7 f7f6 d7e8 d4f5 d6d8 f5e7 d8e7 f6e5 e8f7 e5d5 c8b7 d5h5 f7g8 h3e6 c5e6 h5g4 g8f7 g4f5 e7f6 f5h7 e6g7 b1d1 f6c6 f2f3 c6c5 g1g2 

[kgburcham]

Hello:

Intel Pentium D930 (Dual Core). Infinite analysis (without Multi PV) by Houdini 1.5a w32 (with 1024 MB of hash):
If Houdini sees Bf6 in three minutes when running on my Dual Core, I wonder how many seconds will take the 64-bit version in a fast machine.

Regards from Spain.
Ajedrecista.

[D] r1b1r1k1/p2q1ppp/np2n3/3p1NBQ/8/6PB/P4P1P/1R2R1K1 w - - 0 1

Houdini 1.5ab-16 x64:
12 threads HT off

1.Bf6
+/= (0.59 ++) Depth: 19/62 00:00:06 183mN
1.Bf6
+/- (1.18 ++) Depth: 19/62 00:00:07 204mN
1.Bf6 gxf6 2.Qh6 Nac5 3.Qxf6 Ne4 4.Rxe4 dxe4 5.Bf1 Qd2 6.Rd1 Qg5
+- (2.02) Depth: 19/65 00:00:10 282mN
1.Bf6 gxf6
+- (1.90 --) Depth: 20/65 00:00:11 332mN
1.Bf6
+- (2.13 ++) Depth: 20/65 00:00:15 436mN
1.Bf6
+- (2.21 ++) Depth: 21/65 00:00:17 495mN
1.Bf6
+- (2.44 ++) Depth: 21/65 00:00:18 543mN
1.Bf6
+- (2.98 ++) Depth: 21/67 00:00:21 637mN
1.Bf6 g6 2.Qf3 Nac5 3.Nh6+ Kf8 4.Be5 Ng5 5.Qf6 Nxh3+ 6.Kg2 Rxe5 7.Rxe5 Ne6
+- (3.12) Depth: 21/72 00:00:34 1084mN
1.Bf6
+- (3.27 ++) Depth: 22/72 00:00:38 1201mN
1.Bf6
+- (3.58 ++) Depth: 22/72 00:00:41 1312mN
1.Bf6 g6 2.Qf3 Nac5 3.Nh6+ Kf8 4.Be5 Ng5 5.Qf6 Nxh3+ 6.Kg2 Rxe5 7.Rxe5 Ne6 8.Rbe1 Qe8
+- (3.67) Depth: 22/72 00:00:46 1437mN
1.Bf6
+- (3.84 ++) Depth: 23/72 00:00:53 1668mN
1.Bf6 g6 2.Qf3 Nac5 3.Nh6+ Kf8 4.Be5 Ng5 5.Qf6 Nxh3+ 6.Kg2 Rxe5 7.Rxe5 Ne6 8.Rbe1 Qe8
+- (3.74) Depth: 23/72 00:00:55 1744mN
1.Bf6 g6 2.Qf3 Nac5 3.Nh6+ Kf8 4.Be5 Ng5 5.Qf6 Nxh3+ 6.Kg2 Rxe5 7.Rxe5 Ne6
+- (3.81) Depth: 24/72 00:01:10 2281mN
1.Bf6
+- (4.00 ++) Depth: 25/73 00:01:37 3230mN

[Norm Pollock]

Here is a site with over 10,000 otb chess test positions:

http://wtharvey.com/