Super Tournament XXXVII

[lkaufman]

so far 13 out of 78 decisive, just 17%. I was hoping for at least 30% for a low-draw book like this with up to 70 cp evals. It seems that play is so good now that it's hard to avoid draws unless you start very near the win/draw line.

[chrisw]

Why was this game declared a draw? They were shuffling, but the "winning" side was going to make a pawn move and change everything sooner or later.

[pgn]Chess-System-Tal-2.00 -- Clover 6.0 Super Tournament XXXVII 2023.09.04 1/2-1/2 1.e4 (Book) 1...c5 (Book) 2.Nf3 (Book) 2...e6 (Book) 3.d4 (Book) 3...cxd4 (Book) 4.Nxd4 (Book) 4...Qb6 (Book) 5.Nb3 (Book) 5...Qc7 (Book) 6.g3 (Book) 6...Nf6 (Nf6 Nc3 a6) -0.55/31 52 7.Bg2 (Bg2 Be7 O-O O-O Nc3 Nc6 Nb5 Qb8 c4 d6 Qe2 a6 N5d4 Qc7 Be3 Re8 Rac1 e5 Nf5 Be6 Nxe7+ Qxe7 Rfd1 a5 c5) 0.64/25 25 7...Be7 (Be7 O-O O-O Qe2 Nc6 Rd1 d6 c4 Bd7 Be3 Ne5 N1d2 Rac8 Rdc1 Rfd8 h3 Nc6 Rd1 a6 Rac1 Be8 Nb1 Bf8 Nd4 Nxd4) -0.40/33 33 8.O-O (O-O) 0.65/23 23 8...O-O (O-O Qe2 Nc6 Rd1 d6 c4 Ne5 Na3 a6 Be3 Bd7 Rac1 Ba4 Re1 Bc6 Bd4 Ned7 Nc2 b6 Red1 h6 Nd2 Rfd8 b3 Rac8) -0.24/33 26 9.Nc3 (Nc3 d6 Qe2) 0.60/25 27 9...Nc6 (Nc6 Nb5 Qb8 Qe2 d6 c4 a6 N5d4 Ne5 Be3 Bd7 f4 Ng6 Nc2 Qc7 Rac1 h6 Nb4 Rfe8 Nd2 Rac8 Nd3 e5 f5 Nf8) -0.33/34 27 10.Nb5 (Nb5 Qb8 c4 d6 N3d4 a6 Nxc6 bxc6 Nc3 Nd7 b3 Bf6 Bb2 c5 Na4 Bxb2 Nxb2 Rd8 Na4 Bb7 Nc3 Bc6 Qd2 Nf6 Rfe1) 0.43/25 22 10...Qb8 (Qb8 Qe2 d6 c4 a6 N5d4 Qc7 Bd2 Ne5 Rfc1 Bd7 h3 Rfc8 Be3 Be8 Rab1 Nc6 a3 h6 Rc3 Bf8 Nd2 Nd7 b4 Nxd4) -0.28/36 31 11.Be3 (Be3) 0.60/26 67 11...a6 (a6 N5d4) -0.03/32 27 12.N5d4 (N5d4) 0.49/27 31 12...Qc7 (Qc7 Nxc6 bxc6) -0.19/32 93 13.c4 (c4 d6 Rc1 Bd7 Nxc6 Bxc6 Qd3 b6 Nd4 Bb7 b3 h6 Rfd1 Rfe8 Ne2 Bc6 Nc3 Qb7 a4 Ng4 Bf4 Ne5 Qe2 Reb8 Be3) 0.57/27 22 13...d6 (d6 Qe2 Bd7 Rfc1 Rfc8 a4 b6 Nc2 Ne5 Nd2 Bc6 Nd4 Bb7 h3 Nc6 Nxc6 Bxc6 b4 a5 b5 Bb7 Rc2 Rd8 Nb3 h6) -0.29/34 40 14.Rc1 (Rc1) 0.64/26 42 14...Bd7 (Bd7 Qe2 Ne5) -0.28/32 29 15.Nxc6 (Nxc6 Bxc6 Qd3 b6 Nd4 Bb7 Rfd1 Rac8 b3 h6 h4 Qb8 Ne2 Ba8 Nc3 Nd7 Bd4 Rfd8 a4 Qc7 Rd2 Nc5 Qc2 Nd7 Be3) 0.55/27 18 15...Bxc6 (Bxc6 Qd3 b6 Nd4 Bb7 b3 Rac8 Ne2 Rfd8 Nc3 Nd7 Bd4 h6 Rfd1 Qb8 Qe2 Bc6 Rc2 Bf8 Rdc1 Be7 Be3 Bf6 h4 Ba8) -0.29/32 35 16.Qd3 (Qd3) 0.56/26 20 16...b6 (b6 Nd4 Bb7 b3 h6 Rcd1 Qb8 a4 Nd7 Qc2 Rd8 h4 Qc7 Bc1 Nc5 Rd2 Rac8 Kh2 Bf6 Bb2 Be5 Re1 Nd7 Qd1 Nf6) -0.31/33 34 17.Nd4 (Nd4 Bb7 Rfd1 Rac8 b3 h6 h4 Qb8 Bd2 Rfe8 Qe2 Qa8 Re1 Qa7 g4 Nh7 Nf3 Nf6 g5 Nxe4 Be3 hxg5 hxg5 Nc5) 0.50/26 23 17...Bb7 (Bb7 Rfd1 Nd7) -0.31/30 66 18.Rfd1 (Rfd1 Rac8 b3 h6 Ne2 Nd7 Nc3 Rfd8 Bd4 Bg5 Rc2 Bf6 h3 Bxd4 Qxd4 Nf6 Rdd2 Ba8 Qe3 Rb8 Kh2 Rbc8 Qe2 Bc6 Qe3) 0.57/26 19 18...Rac8 (Rac8 b3 Qb8 Ne2 Nd7 Nc3 Rfd8 Qe2 h6 h3 Bc6 Bf4 Nc5 h4 Nd7 Nd5 Bf8 Nb4 Bb7 Nd3 Be7 Rc2 b5 c5 e5) -0.22/31 25 19.b3 (b3 h6 Ne2 Ng4 Bd4 Rfd8 h3 Ne5 Qc3 Bf6 Qe3 Nd7 Bxf6 Nxf6 Nc3 Ba8 Na4 Rb8 Qd4 Kf8 f3 Kg8 Nc3 Qb7 Kh2) 0.49/26 33 19...h6 (h6 Rc2 Rfd8) -0.20/30 40 20.Ne2 (Ne2 Nd7 Nc3 Rfe8 Qe2 Bc6 Bd4 Bg5 Rb1 Ba8 a4 Bf6 Bxf6 Nxf6 Rd4 d5 exd5 exd5 Qd1 dxc4 Bxa8 Rxa8 bxc4 Red8 Nd5) 0.59/27 42 20...Qb8 (Qb8 Bxb6 Bxe4) -0.26/35 25 21.a4 (a4 Qa8) 0.57/27 54 21...Nd7 (Nd7 Bd4 Qc7) -0.35/35 16 22.Nc3 (Nc3 Nc5 Qc2 Bf6 Bf4 Be7 Rd2 Nd7 h3 Rfd8 Rcd1 Ne5 Be3 Nd7 Bd4 Bc6 Qb2 Qb7 Kh2 Bf8 Rb1 Qb8 f4 b5 axb5) 0.63/27 29 22...Rfd8 (Rfd8 Rb1 Nc5) -0.41/34 66 23.Bd4 (Bd4 Nc5 Qc2 Bc6 Qa2 Bg5 Rb1 Nd7 h4 Bf6 Bxf6 Nxf6 Qe2 Nd7 Qe3 Qc7 g4 Ne5 Qg3 b5 cxb5 Be8 Rbc1 axb5 Nxb5) 0.44/23 26 23...Qc7 (Qc7 Qe2 Bf6 Bxf6 Nxf6 Rd2 Nd7 Qd1 Nc5 h3 Qe7 Qc2 a5 Re1 Bc6 Re3 Qf6 Qd1 Qe7 Kh2 Qf6 f4 Qe7 h4 Qf8) -0.29/34 20 24.Rb1 (Rb1 Bg5 Qe2 Bf6 Bxf6 Nxf6 Rd4 Nd7 Qd1 Ne5 h3 Qc5 Kh2 g5 Qd2 Nc6 Rd3 Ne5 Re3 Kh7 Ne2 b5 f4 gxf4 gxf4) 0.46/24 17 24...Ba8 (Ba8 Qe2 Ne5 Rd2 Nc6 Be3 Nb8 Rbd1 Bf6 Na2 Nc6 h4 Na5 Nc1 Nc6 Kh2 Bc3 Rc2 Bb4 f4 Bc5 Rcd2 Bb4 Rd3 Bc5) -0.41/35 48 25.Qe2 (Qe2 Bf6 Bxf6 Nxf6 Rd4 Nd7 Qd1 Ne5 h3 Qc5 Rd2 Nc6 Kh2 Qa5 Rd3 Qc5 f4 Nb4 Rd2 Qe3 Rc1 Qc5 Qe2 Nc6 Rb1) 0.51/28 52 25...Bf8 (Bf8 Rd2 Rb8 h4 Be7 Kh2 Re8 Rbd1 Bb7 Rc1 Bf8 Rf1 Rbd8 Rb1 Be7 Rc1 Nf6 Qd1 Nd7 Kg1 Rc8 Qe2 Bf8 Rf1 Bc6) -0.35/33 33 26.h3 (h3 Be7 Kh2 Re8 Rb2 Rb8 h4 Red8 Rbd2 Re8 Kg1 Red8 Rb1 Bc6 Rc1 Ba8 Kh2 Nc5 Rb1 Nd7 Re1 Rbc8 Red1 Re8 Ra1) 0.75/26 23 26...Bc6 (Bc6 Kh2 Qb7 Rd2 Qc7 Be3 Qb8 h4 Qb7 Bd4 Qb8 Rbd1 Re8 Rc1 Red8 Rdd1 Nc5 Rb1 Qc7 Rd2 Re8 Rbb2 Nd7 Rbc2 Bb7) -0.35/34 14 27.Kh2 (Kh2 Ba8 Rd2 Be7 Kg1 Bf8 Qg4 Ne5 Qd1 Nd7 Qe2 Be7 Kh2 Rb8 Rbd1 Re8 Ra1 Nc5 Rb1 Nd7 Rbd1 Red8 f4 Re8 Qg4) 0.74/28 27 27...Qb7 (Qb7 Rd2 Nc5 Ra2 Nd7 f4 Re8 Rf1 Be7 Rd1 Qc7 Rad2 Bf8 Bg1 Nc5 Rb1 Nd7 Qd1 Qb7 Rbb2 Nf6 Qb1 Nd7 Qc2 Red8) -0.35/34 31 28.Re1 (Re1 Qc7 Rb2 Rb8 Rd2 Ba8 Rc1 Be7 Rcd1 Re8 Ra1 Red8 h4 Rdc8 Kg1 Re8 Rad1 Bf8 Kh2 Be7 Rb2 Bf6 Bxf6 Nxf6) 0.74/23 30 28...Re8 (Re8 Red1 Nc5 Rb2 Be7 Rdd2 Nd7 Ra2 Bf8 Rd1 Qc7 f4 Nc5 Rb1 Nd7 Rf1 Be7 Rc1 Qb7 Rd1 Qc7 Rdd2 e5 Bf2 exf4) -0.35/34 17 29.h4 (h4 Nc5 Qc2 Nd7 Qd1 Qc7 Qe2 Be7 Red1 Ba8 Rd2 Red8 Kg1 Rb8 Rc1 Rbc8 Ra1 Re8 Rb1 Bc6 Rc1 Ba8 Qd1 Red8 Be3) 0.74/23 27 29...Qc7 (Qc7 Red1 Bb7 Rb2 Bc6 Rc2 Bb7 Rcd2 Bc6 Rb1 Qb8 Be3 Qc7 Rc1 Qb8 Rcd1 Nc5 Rb1 Nd7 Kg1 Red8 Bf4 Qc7 Kh2 Qb8) -0.32/35 19 30.Red1 (Red1 Bb7 Kg1 Nc5 Qd2 Rcd8 Qc2 Nd7 Rbc1 Nc5 Rd2 Nd7 Qd1 Rc8 Qg4 Ne5 Qe2 Nd7 Rb1 Ba8 Qg4 Bc6 Be3 Qb7 Kh2) 0.74/26 20 30...Be7 (Be7 Rd2 Qb7 Qd1 Qc7 Rc1 Qb8 Ra1 Qc7 Qe2 Bf8 Rc1 Qb8 Rdd1 Nc5 Rb1 Nd7 Rd2 Qc7 Rbd1 Qb7 Rb2 Be7 Rdd2 Qb8) -0.32/33 14 31.Rd2 (Rd2 Ba8 Kg1 Rb8 Qg4 Ne5 Qd1 Nd7 Qe2 Red8 Kh2 Rdc8 Qg4 Ne5 Qd1 Nd7 Qe2 Re8 Rbd1 Nc5 Qg4 Bf8 Rb1 Nd7 Rc1) 0.74/26 24 31...Qb7 (Qb7 Rdb2 Qc7 Rc2 Bb7 Rd2 Bc6 Ra1 Bf8 Be3 Be7 Qd1 Red8 Bd4 Qb8 Qe2 Bf8 Rc2 Re8 Rd1 Qc7 Rdd2 Nc5 Rb2 Nd7) -0.31/31 12 32.Re1 (Re1 Qc7 Red1 Bb7 Kg1 Bc6 Qg4 Nf6 Qf3 Nd7 Kh2 Bb7 Qe2 Rb8 Rc1 Ba8 Kg1 Rbc8 Qg4 Nf6 Qf3 Bb7 Qd1 Nd7 Kh2) 0.73/25 19 32...Bf8 (Bf8 Be3 Nc5 Rb2 Be7 Bd4 Nd7 Rc1 Qb8 Rd2 Bf8 Be3 Be7 Qd1 Red8 Bd4 Bf8 Ra2 Re8 Rac2 Be7 Rd2 Red8 Rcc2 Re8) -0.31/32 30 33.Red1 (Red1 Nc5 Rb2 Nd7 Rbb1 Nc5 Rd2 Nd7 Qg4 Qc7 Qd1 Bb7 Kg1 Be7 Ra1 Ba8 Qe2 Bf8 Rc1 Red8 Rb1 Be7 Rdd1 Rb8 Kh2) 0.74/25 16 33...Qc7 (Qc7 Be3 Nc5 Rb1 Qb7 Bd4 Nd7 Qd1 Qc7 Be3 Red8 Rbb2 Bb7 Rbc2 Be7 Bd4 Re8 Qe2 Nc5 Rb2 Nd7 Rb1 Bc6 Rc1 Qb8) -0.32/33 15 34.Rc1 (Rc1 Qb7 Rb2 Qc7 Kg1 Nc5 Rd1 Nd7 Rbb1 Rb8 Kh2 Rbc8 Rd2 Bb7 Rc1 Be7 Rcd1 Bf8 Rb1 Bc6 Qd1 Ba8 Kg1 Bc6 Qe2) 0.73/26 16 34...Qb7 (Qb7 Rcd1 Qc7 Rb1 Bb7 Qd1 Bc6 Rbb2 Bb7 Ra2 Qb8 Be3 Be7 Bf4 Ne5 Qe2 Nd7 Rab2 Red8 Qd1 Nc5 Be3 Qc7 Bd4 Nd7) -0.31/32 9 35.Rcd1 (Qd1) 1.17/2 1 35...Qc7 (Qc7 Rb1 Qb8 Kg1 Qb7 Qd1 Red8 Kh2 Re8 Rc1 Ne5 Ra1 Nd7 Rb1 Qc7 Rbb2 Bb7 Ra2 Qb8 Be3 Qc7 Ra1 Be7 Bd4 Qb8) -0.31/33 7 36.Rc1 (Rc1) 0.00/4 1 36...Qb7 (Qb7 Be3 Qb8 Qd1 Red8 Rb1 Be7 Bd4 Re8 Kg1 Qc7 Qe2 Qb8 Rbd1 Bf8 Rc1 Be7 Rcc2 Bf8 Rb2 Qc7 Kh2 Be7 Ra2 Nc5) -0.31/33 26 37.Rb2 (Rb2 Qb8 Rd1 Qc7 Rbd2 Qb8 f4 Qb7 Rf1 Nc5 Rb2 Rb8 Rbb1 Rbc8 Rfd1 Nd7 Rb2 Be7 Rbd2 Qc7 Bh3 Rcd8 f5 Bf6 fxe6) 0.70/26 56 37...Qb8 (Qb8 Rcb1 Ba8 Rd1 Bc6 Rdd2 Be7 Rbc2 Bf8 Be3 Be7 Qg4 Bf8 Rb2 Qb7 Qe2 Red8 Rd1 Be7 Ra2 Qb8 Bd4 Re8 Rc2 Nc5) -0.31/31 5 38.Rd1 (Rd1 Ba8 Rbb1 Bc6 Rd2 Qc7 Qg4 Qb7 Qd1 Qc7 Qe2 Be7 Rc1 Ba8 Kg1 Bb7 Rb1 Bc6 Qg4 Bf8 Qh5 Rb8 Qe2 Rbc8 Be3) 0.70/26 25 38...Nc5 (Nc5 Rdd2 Nd7 Qd1 Bb7 Rb1 Bc6 Rc2 Be7 Qe2 Bf8 Rd2 Qb7 Ra2 Qc7 Be3 Be7 Rd2 Red8 Bd4 Re8 Rc1 Qb8 Kg1 Nc5) -0.31/30 7 39.Rbb1 (Rbb1 Nd7 Rd2 Qc7 Rbd1 Be7 Ra1 Bb7 Rc1 Ba8 Rb1 Bc6 Kg1 Bb7 Ra1 Bc6 Rc1 Qb7 Rcd1 Nc5 Rb1 Nd7 Qd1 Bf8) 0.70/24 16 39...Nd7 (Nd7 Rd2 Qb7 Ra2 Qb8 Rd1 Be7 Rad2 Bf8 f4 Qb7 Ra2 Qb8 Bg1 Qc7 Rc1 Qb8 Rb2 Nc5 Ra1 Nd7 Rd1 Qc7 Rbd2 Nc5) -0.31/30 4 40.Rb2 (Rb2) 0.00/4 1 40...Nc5 (Nc5 Rdd2 Nd7 Qd1 Bb7 Rb1 Bc6 Rc2 Be7 Qe2 Bf8 Rd2 Qb7 Ra2 Qb8 Rd1 Bb7 f4 Bc6 Bg1 Qc7 Rc1 Ba8 Rac2 Bc6) -0.31/30 1 41.Rbb1 (Rbb1) 0.00/4 1 41...Nd7 (Nd7 Rd2 Qb7 Ra2 Qc7 Rc2 Qb8 Rd1 Nc5 Rb2 Qc7 Rc1 Qb7 Ra1 Nd7 Rd1 Nc5 Rbb1 Nd7 Be3 Red8 Rd2 Qc7 Rbd1 Nc5) -0.31/37 23 42.Rd2 (Rd2 Qc7 Qh5 Bb7 Rc1 Be7 Rcd1 Rb8 Kg1 Ba8 Qe2 Rbc8 Ra1 Bc6 Kh2 Bb7 Qg4 Bf6 Rad1 Bxd4 Rxd4 Ne5 Qe2) 0.69/25 21 42...Qb7 (Qb7 Ra2 Qc7 Rc2 Qb7 Rbb2 Qc7 Be3 Qb8 Rd2 Be7 Qd1 Bb7 Rbc2 Bc6 Bd4 Bf8 Rb2 Qb7 Qe2 Be7 Ra2 Qc7 f4 Bf8) -0.31/38 27 43.Ra2 (Ra2 Qc7 Qd1 Be7 Rd2 Bf8 Kg1 Be7 Qe2 Qb7 Rc2 Qb8 Rcb2 Qc7 Rd1 Ba8 Rbb1 Ne5 Qe3 Rb8 Qd2 Red8 Qe2 Nc6 Be3) 0.69/27 73 43...Qc7 (Qc7 Rc2 Qb7 Rbb2 Qc7 Be3 Bb7 Rd2 Be7 Qd1 Qb8 Rbc2 Bc6 Ra2 Red8 Bd4 Qc7 Qe2 Re8 Qg4 Bf8 Qd1 Qb8 Rac2 Qb7) -0.32/37 26 44.Qd1 (Qd1 Be7 Rd2 Bf8 Rc2 Qb7 Ra1 Nc5 Rd2 Qb8 Rc1 Nd7 Rb2 Bb7 Rcb1 Be7 Qe2 Bc6 Rd1 Qc7 Rc2 Bb7 Rcd2 Rb8 Be3) 0.69/27 54 44...Be7 (Be7 Rc2 Qb8 Rbb2 Bb7 Rd2 Bf8 Rbc2 Bc6 Ra2 Qc7 Rab2 Qb7 Be3 Be7 Ra2 Qb8 Bd4 Bf8 Rac2 Be7 Qe2 Nc5 Qg4 Bf8) -0.32/37 28 45.Rd2 (Rd2 Bb7 Rc1 Ba8 Qe2 Rb8 Kg1 Bb7 Rb1 Rbc8 Kh2 Rb8 Rbd1 Rbc8 Qh5 Bc6 Qg4 Bf8 Qe2 Bb7 Ra1 Bc6 Qd1 Qb8 Rb2) 0.69/27 18 45...Bf8 (Bf8 Rbb2 Qb7 Be3 Be7 Qe2 Bf6 Bd4 Be7 Rb1 Bf8 Be3 Qb8 Ra1 Be7 Bd4 Qb7 Raa2 Qc7 Rd1 Nc5 Rb1 Bf8 Qd1 Nd7) -0.31/36 22 46.Ra2 (f4 Ba8 f5 exf5 exf5) 0.79/4 1 46...Qb7 (Qb7 Rd2 Qb8 Rc1 Be7 Qe2 Bf8 Rcc2 Be7 Rb2 Bb7 Rb1 Bc6 Qg4 Bf8 Rbb2 Bb7 Be3 Bc6 Qd1 Red8 Ra2 Re8 Qe2 Be7) -0.31/40 28 47.Qe2 (b4) 1.14/4 1 47...Be7 (Be7 Rd1 Bf8 Rb2 Qb8 Rdd2 Be7 Qd1 Bf8 Rbc2 Red8 Ra2 Re8 Qe2 Qc7 Rab2 Qb8 Qd1 Qb7 Rbc2 Qb8 Be3 Be7 Ra2 Red8) -0.31/36 17 48.Kg1 (Kg1 Qc7 Rd2 Bf8 Qd1 Be7 Rc1 Ba8 Qg4 Nf6 Qf3 Nd7 Qe2 Bf8 Rcd1 Be7 Kh2 Bb7 Rb2 Bc6 Rc2 Ba8 Kg1 Bf8 Rcc1) 0.69/26 19 48...Qb8 (Qb8 Rd1 Bb7 Rad2 Nc5 Rb1 Nd7 Qd1 Bc6 Kh2 Bf8 Rc1 Red8 Ra1 Qb7 Be3 Be7 Raa2 Qc7 Bd4 Re8 Qg4 Ne5 Qe2 Nd7) -0.31/38 29 49.Rd1 (Rd1 Nc5 Rb2 Nd7 Rdd2 Bf8 Kh2 Qc7 Rd1 Ba8 Rbb1 Be7 Kg1 Bc6 Rd2 Qb8 Re1 Nc5 Rb2 Bf8 Qd2 Nd7 Kh2 Ne5 Qe2) 0.69/26 21 49...Bb7 (Bb7 Rad2 Bc6 Kh2 Nc5 Rb1 Nd7 Kh3 Qc7 Re1 Qb8 Kh2 Bf8 Rf1 Nc5 Rb1 Nd7 Qd1 Qb7 Ra1 Red8 Be3 Qb8 Qe2 Re8) -0.31/38 25 50.Rad2 (Rad2 Qc7 Kh2 Bc6 Ra1 Ba8 Rc1 Rb8 Rcd1 Rbc8 Qg4 Ne5 Qh5 Nd7 Kg1 Bf8 Qg4 Bc6 Rc1 Qb7 Qd1 Qc7 Rdc2 Qb7 Kh2) 0.69/27 32 50...Bc6 (Bc6 Kh2 Nc5 Rb1 Nd7 Kh3 Qc7 Re1 Qb8 Kh2 Bf8 Rf1 Qb7 Rb1 Be7 Qd1 Bf8 Rc1 Qc7 Be3 Qb8 Kg1 Be7 Bd4 Red8) -0.31/39 32 51.Ra2 (Ra1) 0.62/3 1 51...Bf8 (Bf8 Be3 Be7 Kh2 Bf8 Rb2 Be7 Bd4 Qc7 Kh3 Bf8 Rbd2 Nc5 Rb1 Nd7 Kh2 Qb8 Kg1 Qb7 Qd1 Qb8 Kh2 Be7 Ra1 Bf8) -0.31/30 2 52.Kh2 (Kh2 Qb7 Rb2 Qb8 Rc1 Be7 Rd2 Bf8 Rg1 Qc7 Rgd1 Be7 Ra1 Qb7 Rc2 Nc5 Rb1 Qc7 Rd2 Nd7 Re1 Nc5 Qg4 Bf8 Rb1) 0.69/25 21 52...Qb7 (Qb7 Rb2 Qb8 Rdd2 Bb7 Be3 Bc6 Qd1 Red8 Ra2 Be7 Bd4 Re8 Kh3 Red8 Qe2 Re8 Kh2 Bf8 Rac2 Nc5 Rb2 Nd7 Rb1 Qb7) -0.31/36 32 53.Rb2 (Rb2 Qb8 Rbb1 Qc7 Rbc1 Ba8 Rd2 Be7 Kg1 Bb7 Qg4 Nf6 Qf3 Nd7 Qe2 Ne5 Rdd1 Nd7 Rb1 Bc6 Rd2 Bb7 Kh2 Rb8 Rh1) 0.68/28 70 53...Nc5 (Nc5 Rdd2 Nd7 Qg4 Ne5 Qd1 Nd7 Qe2 Qc7 Rd1 Be7 Rc2 Bf8 Rb1 Qb8 Rd2 Qc7 Qd1 Qb7 Rbb2 Qb8 Be3 Red8 Ra2 Be7) -0.31/39 39 54.Ra1 (Ra1 Nd7 Qd1 Qc7 Rd2 Qb8 Qf1 Be7 Rb1 Qc7 Rc1 Qb8 Qe2 Bf8 Rf1 Nc5 Rb1 Qb7 Rdd1 Qc7 Qg4 Nd7 Rd2 Bb7 Qh5) 0.68/27 20 54...Nd7 (Nd7 Rd1 Nc5 Rdd2 Nd7 Qg4 Ne5 Qd1 Nd7 Qe2 Qc7 Rd1 Be7 Rdb1 Qb7 Rd2 Bf8 Be3 Red8 Rc2 Nc5 Bd4 Re8 Ra2 Nd7) -0.31/40 27 55.Rc1 (Rc1) 0.00/4 1 55...Qb8 (Qb8 Rcb1 Qc7 Rc2 Nc5 Qd1 Qb7 Rd2 Nd7 Kg1 Qc7 Qg4 Qb8 Qe2 Qc7 Qd1 Be7 Kh2 Qb8 Rdb2 Bb7 Ra2 Bc6 Rd2 Qb7) -0.31/38 25 56.Rcb1 (Rcb1 Bb7 Qd1 Qc7 Rc1 Be7 Rd2 Ba8 Qe2 Qb7 Kg1 Nc5 Rb1 Nd7 Qd1 Qc7 Ra1 Rcd8 Rc1 Qb7 Qe2 Qc7 Rcd1 Bb7 Qg4) 0.69/26 36 56...Qc7 (Qc7 Rc2 Bb7 Rd2 Bc6 Qd1 Qb8 Rc2 Bb7 Rcb2 Red8 Qe2 Re8 Rf1 Qc7 Rd2 Be7 Rc1 Qb8 Rcd1 Qc7 Kg1 Rcd8 Rb1 Rc8) -0.31/36 22 57.Rd1 (Rd1 Be7 Rc2 Bb7 Kg1 Red8 Rcc1 Re8 Rd2 Ba8 Kh2 Red8 Rcd1 Re8 Qg4 Nf6 Qf3 Nd7 Rb1 Rb8 Qe2 Bb7 Rbd1 Bc6 Rc2) 0.68/27 39 57...Bb7 (Bb7 Rc2 Nc5 Rb1 Nd7 Qd1 Qb8 Rcb2 Bc6 Bh3 Qc7 Rd2 Rcd8 Rc1 Qb8 Bg2 Rc8 Rcc2 Be7 Qe2 Bf8 Rd1 Qc7 f4 Qb7) -0.31/36 33 58.Rdd2 (Rdd2 Bc6 Qd1 Qb7 Ra2 Qc7 Ra1 Qb8 Rc1 Qb7 Kg1 Qc7 Rb1 Bb7 Qg4 Bc6 Qe2 Bb7 Qd1 Bc6 Ra1 Be7 Qe2 Qb7 Rdd1) 0.68/27 48 58...Bc6 (Bc6 Qg4 Bb7 Be3 Bc6 Qd1 Qb8 Bf4 Ne5 Qe2 Be7 Kh3 Nd7 Qd1 Ne5 Be3 Nd7 Ra2 Bf6 Bd4 Be7 Kh2 Bf8 Ra1 Bb7) -0.29/36 32 59.Rd1 (Ra2) 0.70/4 1 59...Bb7 (Bb7 Rc2 Bc6 Rcd2 Qb7 Rb1 Qb8 Be3 Be7 Qd1 Qc7 Rbb2 Qb7 Rbc2 Qb8 Rc1 Bf8 Bf4 Red8 Rcc2 Ne5 Qe2 Nd7 Be3 Be7) -0.29/37 19 60.Rdd2 (Na2) 0.83/3 1 60...Bc6 (Bc6 Be3 Be7 Qd1 Qb7 Rbc2 Qb8 Rc1 Bf8 Qe2 Be7 Bd4 Bf8 Kg1 Red8 Rcd1 Re8 Rb1 Qc7 Kh2 Qb7 Be3 Be7 f4 Qc7) -0.29/38 25 61.Qd1 (Qd1 Ba8 Kg1 Bb7 Ra2 Ba8 Rac2 Be7 Rc1 Red8 Qe2 Re8 Rb1 Bb7 Qg4 Nf6 Qd1 Ba8 Qe2 Nd7 Rc1 Bf8 Qh5 Bb7 Kh2) 0.69/28 38 61...Be7 (Be7 Rbc2 Qb8 Qe2 Bf8 Rd1 Qc7 Rcd2 Qb7 Rb1 Qb8 Qd1 Be7 Qg4 Bf8 Qe2 Qb7 Be3 Qb8 Qd1 Be7 Rc1 Bf8 Qe2 Be7) -0.29/39 25 1/2-1/2 [/pgn]

[chrisw]

so far 13 out of 78 decisive, just 17%. I was hoping for at least 30% for a low-draw book like this with up to 70 cp evals. It seems that play is so good now that it's hard to avoid draws unless you start very near the win/draw line.

Don't forget, allocation criteria in to the book is on PGN result rate, and there are plenty of lines which SF15 measures the start EVAL as quite low. Eg result says high winrate, but eval says low winrate and it's still in the book.

Maybe I should apply two filter criteria: high PGN winrate, plus cull low eval winrate

[chrisw]

100 line book now filtered on SF15 eval > 50 cp as well as high PGN-winrate. Emailed to Graham.
Also on Github

[Guenther]

fixed pgn massacre without any tag, illegal brackets and more crap...

Why was this game declared a draw? They were shuffling, but the "winning" side was going to make a pawn move and change everything sooner or later.

[pgn] [Event "Super Tournament XXXVII"] [Site "Graham Banks"] [Date "2023.09.04"] [Round ""] [White "Chess-System-Tal-2.00"] [Black "Clover 6.0"] [Result "1/2-1/2"] 1.e4 1...c5 2.Nf3 2...e6 3.d4 3...cxd4 4.Nxd4 4...Qb6 5.Nb3 5...Qc7 6.g3 6...Nf6 {-0.55/31 52} 7.Bg2 {0.64/25 25} 7...Be7 {-0.40/33 33} 8.O-O {0.65/23 23} 8...O-O {-0.24/33 26} 9.Nc3 {0.60/25 27} 9...Nc6 {-0.33/34 27} 10.Nb5 {0.43/25 22} 10...Qb8 {-0.28/36 31} 11.Be3 {0.60/26 67} 11...a6 {-0.03/32 27} 12.N5d4 {0.49/27 31} 12...Qc7 {-0.19/32 93} 13.c4 {0.57/27 22} 13...d6 {-0.29/34 40} 14.Rc1 {0.64/26 42} 14...Bd7 {-0.28/32 29} 15.Nxc6 {0.55/27 18} 15...Bxc6 {-0.29/32 35} 16.Qd3 {0.56/26 20} 16...b6 {-0.31/33 34} 17.Nd4 {0.50/26 23} 17...Bb7 {-0.31/30 66} 18.Rfd1 {0.57/26 19} 18...Rac8 {-0.22/31 25} 19.b3 {0.49/26 33} 19...h6 {-0.20/30 40} 20.Ne2 {0.59/27 42} 20...Qb8 {-0.26/35 25} 21.a4 {0.57/27 54} 21...Nd7 {-0.35/35 16} 22.Nc3 {0.63/27 29} 22...Rfd8 {-0.41/34 66} 23.Bd4 {0.44/23 26} 23...Qc7 {-0.29/34 20} 24.Rb1 {0.46/24 17} 24...Ba8 {-0.41/35 48} 25.Qe2 {0.51/28 52} 25...Bf8 {-0.35/33 33} 26.h3 {0.75/26 23} 26...Bc6 {-0.35/34 14} 27.Kh2 {0.74/28 27} 27...Qb7 {-0.35/34 31} 28.Re1 {0.74/23 30} 28...Re8 {-0.35/34 17} 29.h4 {0.74/23 27} 29...Qc7 {-0.32/35 19} 30.Red1 {0.74/26 20} 30...Be7 {-0.32/33 14} 31.Rd2 {0.74/26 24} 31...Qb7 {-0.31/31 12} 32.Re1 {0.73/25 19} 32...Bf8 {-0.31/32 30} 33.Red1 {0.74/25 16} 33...Qc7 {-0.32/33 15} 34.Rc1 {0.73/26 16} 34...Qb7 {-0.31/32 9} 35.Rcd1 {1.17/2 1} 35...Qc7 {-0.31/33 7} 36.Rc1 {0.00/4 1} 36...Qb7 {-0.31/33 26} 37.Rb2 {0.70/26 56} 37...Qb8 {-0.31/31 5} 38.Rd1 {0.70/26 25} 38...Nc5 {-0.31/30 7} 39.Rbb1 {0.70/24 16} 39...Nd7 {-0.31/30 4} 40.Rb2 {0.00/4 1} 40...Nc5 {-0.31/30 1} 41.Rbb1 {0.00/4 1} 41...Nd7 {-0.31/37 23} 42.Rd2 {0.69/25 21} 42...Qb7 {-0.31/38 27} 43.Ra2 {0.69/27 73} 43...Qc7 {-0.32/37 26} 44.Qd1 {0.69/27 54} 44...Be7 {-0.32/37 28} 45.Rd2 {0.69/27 18} 45...Bf8 {-0.31/36 22} 46.Ra2 {0.79/4 1} 46...Qb7 {-0.31/40 28} 47.Qe2 {1.14/4 1} 47...Be7 {-0.31/36 17} 48.Kg1 {0.69/26 19} 48...Qb8 {-0.31/38 29} 49.Rd1 {0.69/26 21} 49...Bb7 {-0.31/38 25} 50.Rad2 {0.69/27 32} 50...Bc6 {-0.31/39 32} 51.Ra2 {0.62/3 1} 51...Bf8 {-0.31/30 2} 52.Kh2 {0.69/25 21} 52...Qb7 {-0.31/36 32} 53.Rb2 {0.68/28 70} 53...Nc5 {-0.31/39 39} 54.Ra1 {0.68/27 20} 54...Nd7 {-0.31/40 27} 55.Rc1 {0.00/4 1} 55...Qb8 {-0.31/38 25} 56.Rcb1 {0.69/26 36} 56...Qc7 {-0.31/36 22} 57.Rd1 {0.68/27 39} 57...Bb7 {-0.31/36 33} 58.Rdd2 {0.68/27 48} 58...Bc6 {-0.29/36 32} 59.Rd1 {0.70/4 1} 59...Bb7 {-0.29/37 19} 60.Rdd2 {0.83/3 1} 60...Bc6 {-0.29/38 25} 61.Qd1 {0.69/28 38} 61...Be7 {-0.29/39 25} 1/2-1/2 [/pgn]

[chrisw]

fixed pgn massacre without any tag, illegal brackets and more crap...

Why was this game declared a draw? They were shuffling, but the "winning" side was going to make a pawn move and change everything sooner or later.

[pgn] [Event "Super Tournament XXXVII"] [Site "Graham Banks"] [Date "2023.09.04"] [Round ""] [White "Chess-System-Tal-2.00"] [Black "Clover 6.0"] [Result "1/2-1/2"] 1.e4 1...c5 2.Nf3 2...e6 3.d4 3...cxd4 4.Nxd4 4...Qb6 5.Nb3 5...Qc7 6.g3 6...Nf6 {-0.55/31 52} 7.Bg2 {0.64/25 25} 7...Be7 {-0.40/33 33} 8.O-O {0.65/23 23} 8...O-O {-0.24/33 26} 9.Nc3 {0.60/25 27} 9...Nc6 {-0.33/34 27} 10.Nb5 {0.43/25 22} 10...Qb8 {-0.28/36 31} 11.Be3 {0.60/26 67} 11...a6 {-0.03/32 27} 12.N5d4 {0.49/27 31} 12...Qc7 {-0.19/32 93} 13.c4 {0.57/27 22} 13...d6 {-0.29/34 40} 14.Rc1 {0.64/26 42} 14...Bd7 {-0.28/32 29} 15.Nxc6 {0.55/27 18} 15...Bxc6 {-0.29/32 35} 16.Qd3 {0.56/26 20} 16...b6 {-0.31/33 34} 17.Nd4 {0.50/26 23} 17...Bb7 {-0.31/30 66} 18.Rfd1 {0.57/26 19} 18...Rac8 {-0.22/31 25} 19.b3 {0.49/26 33} 19...h6 {-0.20/30 40} 20.Ne2 {0.59/27 42} 20...Qb8 {-0.26/35 25} 21.a4 {0.57/27 54} 21...Nd7 {-0.35/35 16} 22.Nc3 {0.63/27 29} 22...Rfd8 {-0.41/34 66} 23.Bd4 {0.44/23 26} 23...Qc7 {-0.29/34 20} 24.Rb1 {0.46/24 17} 24...Ba8 {-0.41/35 48} 25.Qe2 {0.51/28 52} 25...Bf8 {-0.35/33 33} 26.h3 {0.75/26 23} 26...Bc6 {-0.35/34 14} 27.Kh2 {0.74/28 27} 27...Qb7 {-0.35/34 31} 28.Re1 {0.74/23 30} 28...Re8 {-0.35/34 17} 29.h4 {0.74/23 27} 29...Qc7 {-0.32/35 19} 30.Red1 {0.74/26 20} 30...Be7 {-0.32/33 14} 31.Rd2 {0.74/26 24} 31...Qb7 {-0.31/31 12} 32.Re1 {0.73/25 19} 32...Bf8 {-0.31/32 30} 33.Red1 {0.74/25 16} 33...Qc7 {-0.32/33 15} 34.Rc1 {0.73/26 16} 34...Qb7 {-0.31/32 9} 35.Rcd1 {1.17/2 1} 35...Qc7 {-0.31/33 7} 36.Rc1 {0.00/4 1} 36...Qb7 {-0.31/33 26} 37.Rb2 {0.70/26 56} 37...Qb8 {-0.31/31 5} 38.Rd1 {0.70/26 25} 38...Nc5 {-0.31/30 7} 39.Rbb1 {0.70/24 16} 39...Nd7 {-0.31/30 4} 40.Rb2 {0.00/4 1} 40...Nc5 {-0.31/30 1} 41.Rbb1 {0.00/4 1} 41...Nd7 {-0.31/37 23} 42.Rd2 {0.69/25 21} 42...Qb7 {-0.31/38 27} 43.Ra2 {0.69/27 73} 43...Qc7 {-0.32/37 26} 44.Qd1 {0.69/27 54} 44...Be7 {-0.32/37 28} 45.Rd2 {0.69/27 18} 45...Bf8 {-0.31/36 22} 46.Ra2 {0.79/4 1} 46...Qb7 {-0.31/40 28} 47.Qe2 {1.14/4 1} 47...Be7 {-0.31/36 17} 48.Kg1 {0.69/26 19} 48...Qb8 {-0.31/38 29} 49.Rd1 {0.69/26 21} 49...Bb7 {-0.31/38 25} 50.Rad2 {0.69/27 32} 50...Bc6 {-0.31/39 32} 51.Ra2 {0.62/3 1} 51...Bf8 {-0.31/30 2} 52.Kh2 {0.69/25 21} 52...Qb7 {-0.31/36 32} 53.Rb2 {0.68/28 70} 53...Nc5 {-0.31/39 39} 54.Ra1 {0.68/27 20} 54...Nd7 {-0.31/40 27} 55.Rc1 {0.00/4 1} 55...Qb8 {-0.31/38 25} 56.Rcb1 {0.69/26 36} 56...Qc7 {-0.31/36 22} 57.Rd1 {0.68/27 39} 57...Bb7 {-0.31/36 33} 58.Rdd2 {0.68/27 48} 58...Bc6 {-0.29/36 32} 59.Rd1 {0.70/4 1} 59...Bb7 {-0.29/37 19} 60.Rdd2 {0.83/3 1} 60...Bc6 {-0.29/38 25} 61.Qd1 {0.69/28 38} 61...Be7 {-0.29/39 25} 1/2-1/2 [/pgn]

Thanks, it looks like the last irreversible was 29 h4, so not 50 move rule draw. The engines are not flagging draw scores, so why is it declared a draw?

[lkaufman]

100 line book now filtered on SF15 eval > 50 cp as well as high PGN-winrate. Emailed to Graham.
Also on Github

That should help. Perhaps the sample size was too small for each position to conclude much just from the pgn-winrate, or else the quality of the play was either too low or too unequal. In theory PGN winrate should be good enough, with strong, roughly equal engines and large samples.

[Graham Banks]

Why was this game declared a draw? They were shuffling, but the "winning" side was going to make a pawn move and change everything sooner or later.

Hi Chris,

I've probably mentioned this before, but I've always used the default ChessGUI adjudication settings:



98% of the time, they're pretty much right.

[lkaufman]

80 centipawns margin for a draw call? That looks almost like a typo, obviously ridiculous. Maybe when SF was calling threshold positions + 2 or so, 80 centipawns wasn't so crazy, but now it is totally unreasonable. Of course if the evals were perfect, 80 would be a draw, since it is below 100, but then why even play the games?

[Modern Times]

Yes, back in the days when I used ChessGUI I never used those defaults, they seem ridiculous to me as well. I think I used to change that draw threshold to 5 centipawns, and then 0 centipawns further down the track. recently, I turned off all evaluation based adjudication and just use tablebase adjudication. (Cutechess)