**Baracuda2014d ABK BKT CGB CTG**

*Well balanced book for testing engines ( up to 8 moves )*

80 new well balanced 8-moves positions. Positions analysed by Stockfish and Komodo.

Around 550 draw opening positions ( no advantage for any side more than 30 cenitpawns ( +-0.30 ))

after move 8.

Don t need additional settings, because there is no bad moves in this book,

but You can change the " Number of games" ( "Variety of play" ) scale to change the percentage of openings...

Just load into Your favorite GUI ( Arena , Shredder , ChessGUI or Fritz ) and enjoy.

Link:

Baracuda2014d ABK BKT CGB CTG80 new well balanced 8-moves positions. Positions analysed by Stockfish and Komodo.

Around 550 draw opening positions ( no advantage for any side more than 30 cenitpawns ( +-0.30 ))

after move 8.

Don t need additional settings, because there is no bad moves in this book,

but You can change the " Number of games" ( "Variety of play" ) scale to change the percentage of openings...

Just load into Your favorite GUI ( Arena , Shredder , ChessGUI or Fritz ) and enjoy.

Link:

Baracuda2014d ABK BKT CGB CTG

Your book will be updated on my rating list. Looking forward to see how well it does.

thanks

New rating list posted on my gauntlet thread, now with 220 games total for your book. 10th place out of 40 books for strength, shaping up to be a high quality neutral opening book. Good work. I will do more games with this opening book and I hope to see new updates in the future!

Great! Thanks!

It is an excellent and balanced book.

On careful scrutiny, I found the following exit points with more than 1/3 of a pawn in favor of one side or the other:

On careful scrutiny, I found the following exit points with more than 1/3 of a pawn in favor of one side or the other:

rnb1kbnr/1p3ppp/p2pp3/8/3pP3/1BN2N1q/PPP1QP1P/R1B1K1R1 w Qkq - acd 39; acs 1685; bm Nxd4; ce 61; pm Nxd4;

pv Nxd4 Nf6 Be3 Qxh2 O-O-O Qh5 Qd2 Qa5 f4 Nc6 f5 exf5 exf5 Ne5 Qg2 Rb8 Rde1 b5 Bf4 Bb7 Qh2;rn1qk2r/1p1bppbp/p2p1np1/8/3NP3/2N1BP2/PPP1B1PP/R2QK2R w KQkq - acd 38; acs 1386; bm Qd2; ce 56; pm Qd2;

pv Qd2 O-O O-O-O Nc6 Kb1 b5 Nd5 Nxd4 Bxd4 Nxd5 Bxg7 Kxg7 exd5 Rc8 h4;r1bqk1nr/pp2ppbp/3p2p1/2pP4/2P1P3/2NB4/PP3PPP/R1BQK2R w KQkq - acd 38; acs 866; bm O-O; cce 205; ce 55;

pm O-O {12} Bg5 {1}; pv O-O Nf6 Be2 O-O Be3 Qa5 a3 Nd7 Bd2 Re8 Qc2 Qc7 Nb5 Qb6 Be3 a6 Nc3 Rb8 Rab1 Qa5 Rfc1 Qc7 Qd2 b6 Rf1 Bb7 f3 Nf6 Rbd1 Bc8 Qc2 Nd7 Rb1 Bb7 Qd2; white_wins 7; black_wins 1; draws 5; r3kb1r/1pp1pppp/p1nq1n2/7b/3P4/2N2NPP/PPP1BP2/R1BQK2R w KQkq - acd 39; acs 551; bm Bf4; ce 54; pm Bf4;

pv Bf4 Qd8 d5 Nb4 Ne5 Bg6 Nxg6 hxg6 Bf3 c6 dxc6 Nxc6 Qxd8+ Rxd8 Kf1 Rd7 Rd1 Rxd1+ Nxd1 e6 Kg2 Be7 Nc3 Kd7 Rd1+ Kc8 Bxc6 bxc6 Be5 Rd8 f4 Rxd1 Nxd1 Kd7 Kf3 c5 Ne3 Ne8 c4 f6 Bc3 Nd6 b3 Kc6 Ba5 Nf5;rnbqk2r/1p2ppb1/p2p1np1/7p/3NP3/2N1BP2/PPPQ2PP/R3KB1R w KQkq - acd 37; acs 1267; bm Be2; cce 37; ce 53;

pm O-O-O {28} Bc4 {16} Be2 {8} Nd5 {1} a4 {1} h3 {1}; pv Be2 Nbd7 O-O b6 Nd5 Bb7 c4 h4 h3 Nh5 Bg5 Ng3 Rf2; white_wins 20; black_wins 16; draws 12; rnb1k1r1/ppq1npQp/4p3/2ppP3/3P4/P1P5/2P2PPP/R1B1KBNR w KQq - acd 38; acs 580; bm Qxh7; cce 91; ce 49;

pm Qxh7 {3020} Qh6 {1}; pv Qxh7 cxd4 Ne2 dxc3 f4 Bd7 Rb1 Nbc6 Qd3 O-O-O Qxc3 Nf5 Rg1 d4 Qc4 Kb8 g4 Ne3 Bxe3 dxe3 Qc3 Rc8 Qxe3 Ne7 Rg3 Rh8 h3 Qxc2 Rc1 Qh7 Rxc8+ Rxc8 Qd3 Qxd3 Rxd3 Bb5 Rd2 Ng6 Kf2; white_wins 1304; black_wins 741; draws 697; r1bqk2r/ppp2ppp/2n1pn2/8/Q1pP4/b4NP1/PP1BPPBP/R3K2R w KQkq - acd 36; acs 564; bm Qxa3; cce -19; ce 48;

pm Qxa3 {20} bxa3 {10}; pv Qxa3 Ne4 Rc1 Nxd2 Nxd2 Nxd4 Nxc4 Qe7; white_wins 6; black_wins 7; draws 10; r1bq1rk1/1pp2pbp/n2p1np1/p2Pp1B1/2P1P3/2N2N2/PP2BPPP/R2QK2R w KQ - acd 37; acs 544; bm Nd2; cce 26; ce 48;

pm Nd2 {242} O-O {45} h3 {7} a3 {2} b3 {1}; pv Nd2 Qd7 h3 h6 Be3 Nh7 a3 f5 exf5 gxf5 f3 b6; white_wins 80; black_wins 68; draws 55; rn1q1rk1/pp2bppp/4bn2/2Pp2B1/8/2N1PN2/PP3PPP/R2QKB1R w KQ - acd 34; acs 470; bm Bb5; cce 28; ce 47;

pm Be2 {29} Rc1 {18} Bd3 {16} Bb5 {8} b4 {3} Qc2 {1}; pv Bb5 a6 Ba4 Bxc5 O-O Be7 Bb3 Nc6 Rb1 Ne8 Bxe7 Nxe7 Nd4 Nf6 Re1 Rc8 Rc1 Qb6 f3 Qd6 Qd3 Rfe8 Nce2 Bd7 Rxc8 Rxc8 Rd1 Nc6 Rc1 Re8 Rc3 Nxd4; white_wins 17; black_wins 14; draws 16; r1b1kb1r/1pqn1ppp/p2ppn2/8/3NPP2/2N5/PPP1B1PP/R1BQ1RK1 w kq - acd 35; acs 375; bm Bf3; cce 72; ce 47;

pm Bf3 {176} a4 {38} Kh1 {36} f5 {9} Be3 {7} g4 {5} Qd3 {4} Qe1 {1}; pv Bf3 Be7 a4 Nb6 Qe1 O-O g4 e5 Nf5 Bxf5 exf5; white_wins 121; black_wins 79; draws 58; r3kb1r/pp1bpppp/3p1n2/q5B1/3QP3/2N5/PPP2PPP/R3KB1R w KQkq - acd 35; acs 408; bm f4; cce 95; ce 47;

pm Bd2 {294} f4 {161} Bxf6 {22} Qd2 {16} h4 {11} Be3 {3}; pv f4 a6 O-O-O Bg4 Rd2 e5 Qd3 Rc8 Bxf6 gxf6 f5 Bh6 h3 Bxd2+ Qxd2 Bh5; white_wins 217; black_wins 119; draws 123; r2qk1nr/1bpnppbp/p2p2p1/8/Pp1PP3/2N2N2/1PP1BPPP/R1BQR1K1 w kq - acd 38; acs 1632; bm Na2; ce 47;

pm Nd5 {8}; pv Na2 Ngf6 Nxb4 a5 e5 axb4 exf6 Nxf6 a5 O-O a6 Bd5 Bf4 Qc8 Ra5 Rd8 Qa1 Ra7 Be3 c6 c3 bxc3 bxc3 Be4 c4 Qc7 Nd2 Bf5 Bf4 Rb8 Bf3 Rba8 c5 Qc8 cxd6 Rxa6; white_wins 1; black_wins 1; draws 6; rn1qkb1r/pb1p1ppp/3n4/1ppP4/5B2/5N2/PP1N1PPP/R2QKB1R w KQkq - acd 37; acs 572; bm Qe2+; ce 46; pm Qe2+;

pv Qe2+ Qe7 O-O-O Na6 Ng5 Qxe2 Bxe2 Be7 Bxd6 Bxd6 Nge4 Be5 Bxb5 O-O Rhe1 Nc7 Bxd7 Bxd5 Nxc5 Bd6 Nde4 Bxc5 Nxc5 Bxg2 Rg1 Bd5 Rg5 Be6 Rg3 g6 Rc3 Bxd7;r1bk1b1r/ppp2ppp/2p5/4Pn2/8/5N2/PPP2PPP/RNB2RK1 w - - acd 36; acs 1917; bm Rd1+; c1 "Permutation"; cce 26; ce 43; id "ed.3257";

pm Nc3 {9462} Rd1+ {1104} b3 {208} h3 {130} Nbd2 {41} Bg5+ {31} c4 {25} Bf4 {18} a4 {11} Bd2 {4} Ng5 {4} Re1 {4} a3 {1}; pv Rd1+ Ke8 Nc3 Be7; white_wins 3500; black_wins 2901; draws 3851; Opening Spanish Game: Berlin Defense. Berlin Wall J. Rogers Line ; CaxtonID: 2362 ECO: C67; r1bqk2r/2pp1ppp/p2b1n2/np6/3Np3/NP2P3/PBPPBPPP/R2QK2R w KQkq - acd 37; acs 509; bm c4; ce 43; pm c4;

pv c4 b4 Nb1 Nc6 d3 Nxd4 Bxd4 c5 Bb2 Qe7 dxe4 Nxe4 Bf3 Be5 Nd2 Bxb2 Nxe4 Rb8 Nd6+ Kf8 Rb1 Be5 Nxc8 Rxc8 O-O g6 Bb7 Rd8 Qc2 Kg7 Rfd1 Qh4 g3 Qf6 Rd5 d6 Rbd1 Bc3 Bxa6;r1bqkb1r/1pp1p2p/p1n1pnp1/3p4/3P1P2/2N1BN2/PPP3PP/R2QKB1R w KQkq - acd 34; acs 483; bm Ne5; ce 42; pm Ne5;

pv Ne5 Bh6 Qe2 O-O g3 Nxe5 dxe5 Nd7 h4 b5 Bh3 Nb6 O-O-O b4 Ne4;r1bqk2r/2p1bppp/p1n2n2/1p2p3/4P3/1B3N2/PPP2PPP/RNBQ1RK1 w kq - acd 36; acs 542; bm Qxd8+; cce 159; ce 42;

pm Qxd8+ {32} Qe2 {14} Bd5 {4} Nc3 {1}; pv Qxd8+ Bxd8 a4 b4 Be3 Be7 Nbd2 Bb7 h3 O-O Rad1 Rad8 Nc4 Rxd1 Rxd1 Rd8 Rb1 Nd7 Ng5 Ba8 Nd2 Bxg5 Bxg5 Rb8 f3 Nc5 Rd1 Bb7 Be3 Nd4 Nc4 Ncxb3 cxb3 f6 Bxd4 Rd8 Kf2 exd4 Na5 Ba8 Rc1 c5 Ke2; white_wins 16; black_wins 6; draws 6; r1bqk2r/1p3ppp/p1nbpn2/3p4/2PN1B2/2N1P3/PP2BPPP/R2QK2R w KQkq - acd 38; acs 475; bm Bxd6; ce 42; pm Bxd6;

pv Bxd6 Qxd6 cxd5 exd5 Rc1 Bd7 O-O O-O a3 Rac8 f4 Rfd8;r1bqk2r/pp1pppbp/6p1/8/2PnP1Q1/2N1B3/PP3PPP/R3KB1R w KQkq - acd 38; acs 382; bm Qd1; cce 106; ce 41;

pm Qd1 {4181} O-O-O {67} Bd3 {10} Bxd4 {1}; pv Qd1 Ne6 Rc1 O-O Be2 b6 Qd2 Bb7 O-O d6 b3 Nc5 f3 a5 Bd1 Rc8 Bc2 Re8 Rfd1 Ba6 Bh6 Bb7 Bf4 Ba6 Re1 Ne6 Be3 Nc5 Rcd1 Nd7 Kh1 Bb7 Nb5 Nc5 Kg1 Ba6 Nc3; white_wins 1849; black_wins 875; draws 1358; Opening ECO:B39c; Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4; 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 Nf6 7.Nc3 Ng4 8.Qxg4 Nxd4 *; rn1qkb1r/pp1nppp1/2p3p1/3p4/3P2P1/P3P2P/1PP2P2/RNBQKB1R w KQkq - acd 34; acs 563; bm Bg2; ce 40; pm Bg2;

pv Bg2 Na6 O-O Nc7 Nd2;r2qk2r/ppp1bppp/2bp1n2/1B6/4P3/2N5/PPP2PPP/R1BQ1RK1 w kq - acd 36; acs 353; bm Bxc6+; cce -66; ce 40;

pm Bxc6+ {23} Qe2 {5} Qd3 {2}; pv Bxc6+ bxc6 f4 Qd7 b3 O-O Bb2 Rfe8 Qd3 Rad8 h3 Qe6 Rad1 Nh5 f5 Qh6 Qf3 Bg5; white_wins 7; black_wins 11; draws 9; r1bqk2r/pp2ppbp/3p1np1/8/2PQP3/2N5/PP2BPPP/R1B1K2R w KQkq - acd 37; acs 593; bm Bg5; cce 66; ce 40;

pm Be3 {2028} Bg5 {1961} O-O {1583} c5 {73} Bd2 {40} Qe3 {21} Qd1 {18} Qd3 {11} b3 {9} f3 {7} Bg4 {2} Qd2 {1} Rb1 {1}; pv Bg5 Be6 Rc1 O-O Qd2 Qa5 b3 a6 f3 Rfe8 O-O b5 Nd5 Qxd2 Bxd2 Nxd5 cxd5 Bd7 Rc7 Bd4+ Kh1 Ra7 Rfc1 Rea8 R7c2 Kg7 g4 a5 Kg2 b4 Bd3 e6 Rc4 e5 Rc7 f6 h4; white_wins 1865; black_wins 1045; draws 2638; Opening ECO:B36i; Sicilian: Maroczy Bind, 5...Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7; 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 *; rnbk3r/1p3ppp/p3pn2/2b5/2B5/4PN2/PP3PPP/RNB2RK1 w - - acd 34; acs 513; bm Be2; c1 "Permutation"; cce 18; ce 39; id "ed.2289";

pm Nbd2 {488} b3 {269} a3 {232} Ne5 {146} Rd1+ {136} Be2 {134} Nc3 {88} Bd2 {29} a4 {4} Nfd2 {1}; pv Be2 Ke7 Nbd2 Bd7 Nc4 Bb5 b3 Rd8 Bb2 Nbd7 Nd4 Bxc4 bxc4 Rac8 Nb3 Bb4 Rfc1 Kf8 Bf3 Rc7 c5 Rdc8 c6 bxc6 Be2 Ra8 Rc2 Be7 Rac1 c5 Bd4 Nd5 Nxc5; white_wins 360; black_wins 304; draws 717; rnb1kb1r/pp1ppppp/5n2/2pP4/4PB2/2q2P2/P2N2PP/R2QKBNR w KQkq - acd 36; acs 561; bm a4; cce 91; ce -39;

pm Bc7 {91} Ne2 {4} Kf2 {3} Rb1 {1} Rc1 {1}; pv a4 Qa5 Bb5 a6 Bd3 d6 Ne2 g6 O-O Nbd7; white_wins 52; black_wins 32; draws 14; r1bq1rk1/p1p1bppp/1pn1p3/3p4/2PPn3/1P3NP1/PB2PPBP/RN1Q1RK1 w - - acd 33; acs 375; bm Nc3; cce 190; ce 38;

pm Nc3 {11} Nbd2 {4} Ne5 {1} Qc1 {1} a3 {1}; pv Nc3 Nxc3 Bxc3 Bb7 Re1 a5 a3 Bf6 e3 Qd7 Rc1 Ne7 Bb2 Rfc8 cxd5 exd5 Ne5 Bxe5 dxe5 c5 Qh5 Nf5 Red1 Qe6 a4 Re8 Qe2 Red8 Qc2 Ne7 Qd3 Ba6 Qd2; white_wins 7; black_wins 1; draws 6; r1bq1rk1/p1p1bppp/2p1pn2/4N3/2pP4/6P1/PP2PP1P/RNBQ1RK1 w - - acd 38; acs 440; bm Nxc6; cce 92; ce 38;

pm Nxc6 {557} Nc3 {8} Qa4 {4} Be3 {3} Nd2 {2}; pv Nxc6 Qe8 Nxe7+ Qxe7 Qa4 e5 dxe5 Qxe5 Nc3 Qe6 Bf4 Rb8 Rab1 Ne4 Qc2 Nxc3 bxc3 Rxb1 Rxb1 Qc6 Be3 Bh3 f3 a6 Bd4 Re8 Rd1 Qb5 e4 f5 e5 c5 Bf2 Rxe5 Qd2 Qa4 Bxc5 Qc6 Qd8+ Re8 Qd5+ Qxd5 Rxd5 Re2 Rd8+ Kf7 Rd7+ Kg6; white_wins 150; black_wins 70; draws 166; r1bqkb1r/5ppp/p1np1n2/1p2p1B1/4P3/N1N5/PPP2PPP/R2QKB1R w KQkq - acd 40; acs 1716; bm Bxf6; c1 "Permutation"; cce 55; ce 38;

pm Nd5 {9787} Bxf6 {9633} Nab1 {76} Naxb5 {8} Bxb5 {6}; pv Bxf6 gxf6 Nd5 Bg7 Bd3 Ne7 Nxe7 Qxe7; white_wins 7673; black_wins 5304; draws 6047; Opening ECO:B33; Opening: Sicilian; Variation Pelikan, Chelyabinsk variation; 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 *; r2qk2r/pp1nbppp/4pnb1/2pp4/7N/1P2P3/PBPPBPPP/RN1Q1RK1 w kq - acd 34; acs 392; bm c4; ce 37; pm c4;

pv c4 O-O Nxg6 hxg6 d3 Nb8 cxd5;r3k1nr/pp1n1ppp/2p1p3/q4b2/1bBP4/2N2N2/PPPBQPPP/R3K2R w KQkq - acd 36; acs 7103; bm a3; cce 9; ce 37;

pm O-O-O {28} a3 {21} O-O {5} Bb3 {2}; pv a3 Ngf6 O-O Bxc3 Bxc3 Qd8 Nh4 Bg6 g3 Nb6 b3 Nxc4 bxc4 O-O Nxg6 hxg6 Rfb1 Qd7 a4 Rac8 a5 Rfd8 Rd1 Qd6 Qf3 Rd7 Rdb1 Qc7; white_wins 17; black_wins 16; draws 17; r2qk2r/pb1pbppp/1pn1pn2/8/2PQ4/2N2NP1/PP2PPBP/R1B2RK1 w kq - acd 37; acs 594; bm Qf4; cce 84; ce 37;

pm Qf4 {647} Qd3 {51} Qd1 {27} Qd2 {22} Qh4 {2}; pv Qf4 Bb4 Rd1; white_wins 288; black_wins 152; draws 279; Opening ECO:A30t; English: Symmetrical, Hedgehog, 8.Qxd4 Nc6; 1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 Nc6 *; r1bq1rk1/1pp1ppbp/p2p1np1/n7/2PPP3/2N1BP2/PP1QN1PP/R3KB1R w KQ - acd 38; acs 566; bm Nc1; cce -89; ce 37;

pm Nc1 {11} Ng3 {3} Nf4 {1} b3 {1}; pv Nc1 Nd7 Nb3 Nxb3 axb3 b6 h4 h5 O-O-O c5 g4 hxg4 h5 gxf3 hxg6 fxg6 dxc5 Nxc5 Bxc5 bxc5 Qd5+ e6 Qxa8 Qb6 e5 Bb7 Rxd6 Qxd6 Qxb7 Qxe5 Qe4 Qg5+; white_wins 2; black_wins 4; draws 4; r2q1rk1/1bppbppp/p1n2n2/1p2p3/4P3/1B3N1P/PPPP1PP1/RNBQR1K1 w - - acd 34; acs 1086; bm d3; cce 62; ce 36;

pm d3 {4534} Nc3 {193} c3 {140} a4 {8} a3 {4} d4 {4}; pv d3 a5 a3 a4 Ba2 h6 Nc3 b4 axb4 Bxb4 Bd2 a3 bxa3 Rxa3 Nb5; white_wins 1971; black_wins 1308; draws 1486; r1bqk2r/pp2bppp/2n1p3/3n4/3P4/2NB1N2/PP3PPP/R1BQK2R w KQkq - acd 36; acs 285; bm O-O; cce 70; ce 36;

pm O-O {2175} a3 {31} Be4 {3} Qe2 {1}; pv O-O O-O Re1 Re8 Nxd5 exd5 Ng5 Bxg5 Bxg5 Rxe1+ Qxe1 f6 Be3 Be6 Rc1 Rc8 h3 Qd7 Bb5 Bf5 a3 h6 Rc5 a6 Ba4 b6 Rc1 Kf7 Qd1 g5 b4 Kg7 b5 axb5 Bxb5 Qe6 Qe1 Bg6 Qd2; white_wins 843; black_wins 495; draws 861; Opening ECO:D42e; QGD: Semi-Tarrasch, 7.Bd3 Main Line; 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3 cxd4 8.exd4 Be7 *; rn2kb1r/ppp2pp1/4pq1p/5b2/3P3N/2N5/PPP3PP/R2QKB1R w KQkq - acd 35; acs 112; bm Nxf5; ce -35; pm Nxf5;

pv Nxf5 Qxf5 Bb5+ c6 Rf1 Qg5 Qf3 Qf6 Qe4;r1bq1rk1/2p1bppp/p1n2n2/1p1pp3/4P3/1BP2N2/PP1P1PPP/RNBQR1K1 w - - acd 40; acs 590; bm exd5; cce 60; ce 34;

pm exd5 {1545} d4 {161} d3 {25} h3 {14}; pv exd5 Nxd5 Nxe5 Nxe5; white_wins 665; black_wins 433; draws 613; Opening Spanish Game: Marshall Attack. Steiner Variation ; CaxtonID: 2433 ECO: C89;
Thank You for Your time...

All those evaluations of positions depends of few things:

Main thing is:

All those evaluations of positions depends of few things:

**1. Which engine did You use**( as You know evaluation of positions is not the same for different engines ( look at the pic below))**2. How much hash did You use**( I m using 2048 or 4096MB )**3. How long did You analyzed position**( 10 min per move , 20 min per move or 1 Hour... its not the same... )Main thing is:

**All those positions are analyzed by top engines : Stockfish ( different versions ) , Komodo and Houdini at high depth.**
Also, sometimes engines fail to correctly evaluate the position, it will take another 10 moves for it to realize the result of an opening.

For instance for the first position in the above list:

acd 39; // DEPTH was 39 plies

acs 1685; // Actual seconds spent at the time of writing the EPD record was 1685 seconds

bm Nxd4; // Recommended move was Nxd4

ce 61; // Evaluation was + 61 one hundredths of a pawn (about +3/5 pawn).

pm Nxd4; // Predicted move is same as best move recommendation

pv Nxd4 Nf6 Be3 Qxh2 O-O-O Qh5 Qd2 Qa5 f4 Nc6 f5 exf5 exf5 Ne5 Qg2 Rb8 Rde1 b5 Bf4 Bb7 Qh2; // The predicted variation

rnb1kbnr/1p3ppp/p2pp3/8/3pP3/1BN2N1q/PPP1QP1P/R1B1K1R1 w Qkq -

acd 39; // DEPTH was 39 plies

acs 1685; // Actual seconds spent at the time of writing the EPD record was 1685 seconds

bm Nxd4; // Recommended move was Nxd4

ce 61; // Evaluation was + 61 one hundredths of a pawn (about +3/5 pawn).

pm Nxd4; // Predicted move is same as best move recommendation

pv Nxd4 Nf6 Be3 Qxh2 O-O-O Qh5 Qd2 Qa5 f4 Nc6 f5 exf5 exf5 Ne5 Qg2 Rb8 Rde1 b5 Bf4 Bb7 Qh2; // The predicted variation

*Another Important Note:*

The Chess Engine Testers should be very carefully in checking the game results,

Which are ended in favor for weaker participants (when there is at least 50-100 Elo difference)

Note also that it’s completely wrong view,

In case of checking the performance of the books by looking at the Engine evaluations

I mean, there are a lot of opening positions,

Where many Chess Engines (when the Engine does the first search) show different evaluations

And it does not mean:

This line is weak or bad and I can show many examples, where the evaluations are more than:-0.50,

Where furthermore (in the middle/endgames) later Whites are winning…

Or just opposite,

There are also such strong openings, where in the first opening,

X Engine show evaluation approx.+0.50 or higher, but furthermore the Blacks are winning…

In other words,

Instead of Engine Evaluations, we should concentrate on Winning Percentage of the played lines…

The Chess Engine Testers should be very carefully in checking the game results,

Which are ended in favor for weaker participants (when there is at least 50-100 Elo difference)

Note also that it’s completely wrong view,

In case of checking the performance of the books by looking at the Engine evaluations

I mean, there are a lot of opening positions,

Where many Chess Engines (when the Engine does the first search) show different evaluations

And it does not mean:

This line is weak or bad and I can show many examples, where the evaluations are more than:-0.50,

Where furthermore (in the middle/endgames) later Whites are winning…

Or just opposite,

There are also such strong openings, where in the first opening,

X Engine show evaluation approx.+0.50 or higher, but furthermore the Blacks are winning…

In other words,

Instead of Engine Evaluations, we should concentrate on Winning Percentage of the played lines…

The above was what Sedat Canbaz had to say, and I agree with him based upon my experience testing opening books. Weird stuff happens where a positive eval can turn negative through a game. However, if mare said the way he figured out whether the book was neutral was from engine analysis at the ending book position, then yes, you brought up positions that show some holes.

The winning percentages are also included in my EPD records, both as win/loss/draw when available and also as cce, which is the centipawn evaluation calculated as a function of wins, losses, and draws.

Some of the positions do not have any games because they are very rarely played.

Some of the positions do not have any games because they are very rarely played.

For instance, this one:

acd 34; // Depth was 34 plies

acs 1086; // Seconds was 1086

bm d3; // best move is d3

cce 62; // Centipawn evaluation based on actual game performance was +62 centipawns

ce 36; // Centipawn evaluation based on computer analysis was +36 centipawns

pm d3 {4534} Nc3 {193} c3 {140} a4 {8} a3 {4} d4 {4}; // In actual games, d3 was played 4534 times, Nc3 193 times, c3 140 times, and other moves a few times.

pv d3 a5 a3 a4 Ba2 h6 Nc3 b4 axb4 Bxb4 Bd2 a3 bxa3 Rxa3 Nb5; // Predicted variation

white_wins 1971; // White won 1971 times

black_wins 1308; // Black won 1308 times

draws 1486; // There were 1486 draws.

r2q1rk1/1bppbppp/p1n2n2/1p2p3/4P3/1B3N1P/PPPP1PP1/RNBQR1K1 w - -

acd 34; // Depth was 34 plies

acs 1086; // Seconds was 1086

bm d3; // best move is d3

cce 62; // Centipawn evaluation based on actual game performance was +62 centipawns

ce 36; // Centipawn evaluation based on computer analysis was +36 centipawns

pm d3 {4534} Nc3 {193} c3 {140} a4 {8} a3 {4} d4 {4}; // In actual games, d3 was played 4534 times, Nc3 193 times, c3 140 times, and other moves a few times.

pv d3 a5 a3 a4 Ba2 h6 Nc3 b4 axb4 Bxb4 Bd2 a3 bxa3 Rxa3 Nb5; // Predicted variation

white_wins 1971; // White won 1971 times

black_wins 1308; // Black won 1308 times

draws 1486; // There were 1486 draws.

Engine was bleeding edge stockfish.

They were analyzed for about 1/2 hour.

The problems showed up much earlier though. I just used 1/2 hour to harden the analysis.

The actual time used is found in each EPD record as the acs field.

The depths produced are also included in the EPD records as the acd field.

They were analyzed for about 1/2 hour.

The problems showed up much earlier though. I just used 1/2 hour to harden the analysis.

The actual time used is found in each EPD record as the acs field.

The depths produced are also included in the EPD records as the acd field.

Komodo and Houdini analysis attached.

Attachment: b.epd - Komodo analysis as EPD records (9k)

Attachment: c.epd - Houdini Analysis as EPD records (9k)

Attachment: bara2a.out - Raw analysis data (373k)

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