WCSC 2017

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6th World Chess Software Championship 2017, on July 01 and 02, 2017, Snellius Building, Leiden University, Leiden, The Netherlands, in conjunction with the WCCC 2017, the Advances in Computer Games 15 conference , and the 20th Computer Olympiad. Seven participants, single round robin, 45 minutes per side plus 15 seconds per move.

Hardware for all programs like in the previous two years was Intel i7-3770 3.4GHz 4 cores, 16 GiB RAM. Shredder by Stefan Meyer-Kahlen won the World Chess Software Championship the third time in 2017, after already winning the WCSC 2010 and the WCSC 2015, that its the first, fourth and sixth edition of this uniform hardware tournament, and continued its amazing series of tournament victories started back in 1996.

=Final Standing= 6th World Chess Software Championship 2017, Leiden, NL

=Participants= 6th World Chess Software Championship 2017, Leiden, NL
 * CC Country Codes

=Photos & Games=

Chiron - Komodo
Ubaldo Andrea Farina and Erdogan Günes in Chiron vs Komodo [Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.01"] [Round "1.3"] [White "Chiron"] [Black "Komodo"] [Result "1/2-1/2"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.O-O Nf6 5.d3 h6 6.c3 d6 7.b4 Bb6 8.a4 a5 9.b5 Ne7 10.Be3 Bxe3 11.fxe3 c6 12.Bb3 O-O 13.c4 Ng6 14.Nc3 Be6 15.Rb1 Rc8 16.Rc1 Ng4 17.Qd2 Nh4 18.h3 Nxf3+ 19.Rxf3 Nf6 20.Qe1 Qe7 21.Rb1 Nh7 22.Kh1 Ng5 23.Rf1 f5 24.h4 Nh7 25.bxc6 bxc6 26.exf5 Bxf5 27.c5+ Kh8 28.cxd6 Qxd6 29.Bc4 Rce8 30.Kg1 Qg6 31.Qd2 Nf6 32.e4 Be6 33.Bxe6 Rxe6 34.Rbe1 Rd8 35.Re3 Rd4 36.Qa2 Qe8 37.Ne2 Rb4 38.Ref3 Qd7 39.Ng3 c5 40.Nf5 c4 41.dxc4 Qc6 42.Rg3 Nh5 43.Rc3 Nf4 44.Qc2 Rg6 45.Rf2 Qc5 46.Kh2 Rxa4 47.g3 Ra1 48.Rcf3 Ne6 49.Qc3 Rd1 50.Qb3 Rd8 51.Qb5 Kh7 52.Ra2 a4 53.Re3 Rf6 54.Qxa4 Rf7 55.Rea3 Rfd7 56.Rg2 Nd4 57.Qa5 Qxc4 58.Qxe5 Nc6 59.Qf4 Qc5 60.Ra1 Nb4 61.Qe3 Nd3 62.Qxc5 Nxc5 63.g4 Nxe4 64.Re1 Nd2 65.Rf2 Rb7 66.Ree2 Nb3 67.Rf4 Rbd7 68.h5 Nd4 69.Ree4 Nxf5 70.Rxf5 Rd3 71.Rf7 Rc3 72.Ref4 Rd2+ 73.Rf2 Rdd3 74.Re7 Rh3+ 75.Kg1 Rh4 76.Rg2 Rc4 77.g5 Rc1+ 78.Kf2 Rc2+ 79.Re2 Rxe2+ 80.Kxe2 Rxh5 81.gxh6 Kxh6 82.Ke3 Rf5 83.Kd4 1/2-1/2

Jonny - The Baron
Johannes Zwanzger and Richard Pijl in Jonny vs The Baron [Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.01"] [Round "1.2"] [White "Jonny"] [Black "The Baron"] [Result "1-0"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 O-O 5.Nf3 d6 6.h3 Nbd7 7.Be2 e5 8.d5 Nc5 9.Qc2 a5 10.Bg5 h6 11.Be3 b6 12.Nd2 Nfd7 13.O-O Bb7 14.Rad1 f5 15.exf5 gxf5 16.f4 e4 17.Kh2 Nf6 18.Rfe1 a4 19.Nf1 Bc8 20.Bf2 h5 21.Nb5 Bh6 22.Qd2 Bd7 23.Nd4 h4 24.Kh1 Nh7 25.b3 axb3 26.axb3 Qf6 27.b4 Nb7 28.Ra1 Rfc8 29.Be3 Nf8 30.g4 hxg3 31.Nxg3 Ng6 32.Kh2 Nd8 33.Nh5 Qf7 34.Qc3 Rxa1 35.Rxa1 Kf8 36.Rg1 Ra8 37.c5 Be8 38.c6 Ra2 39.Kh1 Bg7 40.Nxg7 Qxg7 41.Bh5 Bf7 42.Rg5 Qh8 43.Bg1 e3 44.Rxf5 Qg7 45.Rg5 Rg2 46.Rxg2 Bxd5 47.Bxg6 Qxg6 48.Qc2 Qxc2 49.Nxc2 Nxc6 50.Bxe3 Na7 51.Kh2 Bxg2 52.Kxg2 c5 53.Kf3 Nb5 54.bxc5 1-0

Ziggurat - Shredder
David Norris and Stefan Meyer-Kahlen in Ziggurat vs Shredder [Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.01"] [Round "1.1"] [White "Ziggurat"] [Black "Shredder"] [Result "0-1"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 h6 6.Bxf6 Qxf6 7.e3 Nd7 8.Bd3 dxc4 9.Bxc4 g6 10.O-O Bg7 11.Rc1 O-O 12.e4 e5 13.d5 Nb6 14.dxc6 bxc6 15.Be2 Rd8 16.Qc2 Bg4 17.Nd1 Rac8 18.Ne3 Bxf3 19.Bxf3 h5 20.Qc5 Bh6 21.Rc2 Rd4 22.b3 Rc7 23.a3 Bf8 24.Qa5 Qd6 25.g4 h4 26.Rc3 h3 27.Re1 Rd2 28.Rec1 Ra2 29.b4 Qf6 30.Nf1 c5 31.Rb3 c4 32.Rbc3 Rd7 33.Qb5 a6 34.Qxa6 Bxb4 35.Qb5 Bxc3 36.Rxc3 Rd1 37.Re3 Re1 38.Qe8+ Kh7 39.Be2 Rxf1+ 40.Kxf1 Ra1+ 41.Bd1 Rxd1+ 42.Ke2 Rd3 43.Qb5 Rxe3+ 44.fxe3 Qd6 45.Qb1 c3 46.Qa2 Qd7 47.Qc2 Qb5+ 48.Ke1 Qb2 49.Kd1 Qxa3 50.Ke2 Qb2 51.Kd3 Nd5 52.Qxb2 cxb2 53.Kc2 Nxe3+ 0-1

Round 2
Short book line in Komodo vs Jonny which ended in a draw [Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.01"] [Round "2.2"] [White "Komodo"] [Black "Jonny"] [Result "1/2-1/2"]

1.d4 d5 2.Nf3 c6 3.e3 Bf5 4.Bd3 e6 5.c4 Bxd3 6.Qxd3 Nf6 7.O-O Be7 8.Nbd2 O-O 9.b3 a5 10.Rb1 c5 11.Bb2 Nc6 12.Qe2 cxd4 13.Nxd4 a4 14.Nxc6 bxc6 15.b4 a3 16.Be5 Nd7 17.Bc3 Ra4 18.Rfc1 Qa8 19.cxd5 cxd5 20.b5 Rb8 21.h3 Bf8 22.Qd3 Qb7 23.Qc2 Raa8 24.Nf3 Rc8 25.Nd4 Ne5 26.Qe2 h6 27.Kh2 Qb6 28.Rb3 Ra4 29.f4 Nc4 30.Ba1 Rc5 31.Nc6 Qb7 32.Rcb1 Nd6 33.Bd4 Rcc4 34.Ne5 Rc8 35.Qd1 Nf5 36.Nc6 Nxd4 37.exd4 Qc7 38.Ne5 Qb6 39.Nd7 Qd6 40.Rg3 Ra7 41.Ne5 Rb7 42.Rbb3 Qb6 43.Nc6 Qc7 44.Qf1 Ra8 45.Rgc3 g6 46.g3 Rb6 47.Kg2 Ra4 48.Ne5 Qb7 49.Rc6 Bd6 50.h4 h5 51.Qf3 Kg7 52.Kh3 Ra5 53.Qe2 Ra4 54.Kg2 Ra8 55.Rxb6 Qxb6 56.Nc6 Ra4 57.Rc3 Ra8 58.Rc2 Qb7 59.Qd3 Qb6 60.Rc1 Ra4 61.Qf1 Ra8 62.Qe2 Ra4 63.Kf2 Kg8 64.Kf3 Kg7 65.Kf2 Kg8 66.Qd3 Kg7 67.Kg2 Qc7 68.Rc2 Ra8 69.Kf3 Ra4 70.Qe2 Ra8 71.Qd1 Rc8 72.Qd3 Ra8 73.Rc1 Qb7 74.Kg2 Bc7 75.Rc2 Bd6 76.Rc3 Kh7 77.Rc1 Kg7 78.Rc2 Qb6 79.Rc3 Ra4 80.Rc1 Qc7 81.Qd1 Ra8 82.Kh2 Rc8 83.Rc3 Ra8 84.Qb3 Qb6 85.Kg2 Qb7 86.Rc1 Qb6 87.Kf3 Qb7 88.Kg2 Qb6 89.Kf2 Kh7 90.Rb1 Kg7 91.Ke2 Rc8 92.Kd3 Rc7 93.Qc3 Rb7 94.Qa5 Qxa5 95.Nxa5 Rb6 96.Nc6 f6 97.Ke3 Kf7 98.Rb3 Ke8 99.Kf3 Kd7 100.Ke3 Rb7 101.Kf3 Kc7 102.Rc3 Kb6 103.Nd8 Rd7 104.Nxe6 Kxb5 105.Rb3+ Kc4 106.f5 gxf5 107.Rb6 Kc3 108.Rb3+ Kc4 109.Rb6 Bb4 110.Nf4 Rd6 111.Rb7 Bd2 112.Nxh5 Kxd4 113.Ng7 Rc6 114.Nxf5+ Ke5 115.g4 Rc3+ 116.Ke2 Rc2 117.Kf3 Rc3+ 118.Ke2 Rc2 119.Kf3 Rc3+ 1/2-1/2

Round 4
Round 4 with Bruno Bras and David Norris in front, Hans van der Zijden taking notes for Computerschaak Ziggurat vs Chess Ebbiz 9 1-0, Komodo and Chiron drew their games vs Shredder and Jonny

Chiron - Jonny
[Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.01"] [Round "4.1"] [White "Chiron"] [Black "Jonny"] [Result "1/2-1/2"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.O-O d6 5.c3 Bb6 6.a4 Nf6 7.b4 a5 8.b5 Ne7 9.Re1 O-O 10.d4 exd4 11.cxd4 d5 12.exd5 Nexd5 13.h3 Re8 14.Rxe8+ Qxe8 15.Bg5 h6 16.Bxf6 Nxf6 17.Qb3 Bf5 18.Nc3 Qd7 19.Re1 Re8 20.Rxe8+ Qxe8 21.g4 Be6 22.Bxe6 Qxe6 23.Qxe6 fxe6 24.Kf1 Nd5 25.Nxd5 exd5 26.Ke2 Kf7 27.h4 h5 28.gxh5 Ke6 29.Ng5+ Kf6 30.Nh7+ Ke6 31.Kd3 c6 32.bxc6 bxc6 33.f3 c5 34.Nf8+ Kd6 35.dxc5+ Bxc5 36.Nh7 Ke5 37.f4+ Kxf4 38.Ng5 Ke5 39.Nf7+ Ke6 40.h6 gxh6 41.Nxh6 Kd6 42.h5 Ke5 43.Ng8 Kf5 44.h6 Kg6 45.h7 Kg7 46.h8=Q+ Kxh8 47.Nf6 d4 48.Ne4 Bb6 49.Nd6 Bc5 50.Nf5 Bb6 51.Nxd4 Bxd4 52.Kxd4 Kg8 1/2-1/2

Komodo - Shredder
[Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.01"] [Round "4.2"] [White "Komodo"] [Black "Shredder"] [Result "1/2-1/2"]

1.e4 c5 2.Nc3 e6 3.f4 d5 4.d3 Nc6 5.Nf3 g6 6.g3 Nge7 7.Bg2 Bg7 8.O-O O-O 9.e5 f6 10.exf6 Bxf6 11.Ne2 Nf5 12.g4 Nd6 13.c3 b6 14.Rb1 a5 15.Ng3 Qd7 16.f5 exf5 17.Bh6 Bg7 18.Bxg7 Kxg7 19.gxf5 Nxf5 20.Nxf5+ gxf5 21.Nh4 Qf7 22.Qd2 Ne7 23.Qf4 Qf6 24.Rbe1 Ra7 25.Rf2 Rd8 26.Rfe2 Ng6 27.Nxg6 hxg6 28.Re5 Rh8 29.Rxd5 g5 30.Qg3 Re7 31.Rxe7+ Qxe7 32.d4 cxd4 33.cxd4 Rh4 34.h3 g4 35.Rb5 Bd7 36.Rd5 Bc8 37.Rb5 Bd7 38.Rd5 Bc8 39.Rb5 1/2-1/2

Chess Ebbiz 0 - Ziggurat
[Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.01"] [Round "4.3"] [White "Chess Ebbiz 9"] [Black "Ziggurat"] [Result "0-1"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Kh1 b6 10.Be3 Bb7 11.f3 b5 12.a4 b4 13.Nd5 Nxd5 14.Qxd5 Bxd5 15.Ra2 Bxb3 16.Rg1 Bxa2 17.Re1 Be6 18.Rf1 Nd7 19.Rf2 Bg5 20.Kg1 Bxe3 21.Kf1 Qb6 22.c3 Bxf2 23.Bd3 Qe3 24.b3 Qe1# 0-1

Round 5
Ziggurat vs Chiron, David Norris still hoping for a draw, but it ends in favor of Ubaldo Andrea Farina's program [Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.02"] [Round "5.1"] [White "Ziggurat"] [Black "Chiron"] [Result "0-1"]

1.d4 d5 2.c4 e6 3.Nc3 c6 4.e3 Nf6 5.Nf3 Nbd7 6.Qc2 Bd6 7.Bd3 O-O 8.O-O dxc4 9.Bxc4 b5 10.Be2 Bb7 11.Rd1 Qc7 12.e4 e5 13.Bg5 exd4 14.Rxd4 Ne5 15.Bxf6 gxf6 16.Nh4 Ng6 17.Nf3 b4 18.Rad1 Rad8 19.Na4 c5 20.R4d2 Qe7 21.Nxc5 Bxc5 22.Rxd8 Bxf2+ 23.Kxf2 Rxd8 24.Rxd8+ Qxd8 25.Qc5 a5 26.Qe3 Qc7 27.Qd4 Kg7 28.Qe3 Bc8 29.a3 bxa3 30.bxa3 h5 31.Kg1 h4 32.Bf1 Ne5 33.a4 Nxf3+ 34.gxf3 Qc2 35.Kh1 Qxa4 36.Qg1+ Kh8 37.Qf2 Qd1 38.Qxh4+ Kg7 39.Qg3+ Kf8 40.Kg2 Qd2+ 41.Kh1 a4 42.Qb8 Qc1 43.Qd6+ Kg7 44.Qg3+ Kh7 45.Qh4+ Kg6 46.Kg2 Qg5+ 47.Qxg5+ fxg5 48.Bd3 a3 49.Bb1 Be6 50.Kg3 a2 51.Bxa2 Bxa2 52.Kg2 g4 53.fxg4 Kf6 54.Kg3 Ke5 55.g5 Kxe4 56.Kg4 Be6+ 57.Kh5 Bf5 58.h4 Kf4 59.Kh6 Bg6 60.Kg7 Kg4 61.Kf6 Kxh4 0-1

Round 6
Chiron vs. Shredder in its final exciting stage with Shredder's winning score, attracting some spectators Now the WCSC2017 would be decided in the final round between Shredder and Jonny playing each other, where Jonny needs to win to become champion - while Shredder only needs to draw [Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.02"] [Round "6.2"] [White "Chiron"] [Black "Shredder"] [Result "0-1"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.g3 Bc5 6.Nb3 Be7 7.Bg2 Nf6 8.O-O O-O 9.Nc3 d6 10.Be3 e5 11.Nd5 Nxd5 12.exd5 Nb8 13.Qe2 Nd7 14.Rae1 Bg5 15.Bxg5 Qxg5 16.c4 Qd8 17.Qc2 Nf6 18.Re3 b6 19.h3 Bd7 20.Nd2 h5 21.Rc1 a5 22.Nf3 Nh7 23.Qc3 f5 24.Qa3 Qc7 25.Ree1 f4 26.gxf4 Rxf4 27.Nxe5 dxe5 28.d6 Qd8 29.c5 bxc5 30.Bd5+ Kh8 31.Bxa8 Qxa8 32.Rxe5 Rh4 33.Qxc5 Nf6 34.Qxa5 Qb7 35.Rc7 Qf3 36.Re3 Qd1+ 37.Re1 Qxd6 38.Qe5 Qd2 39.Qc3 Qf4 40.Qg3 Qb4 41.Re7 Qxe7 42.Qxh4 Qe1+ 43.Kg2 Qe6 44.Kh2 Qe5+ 45.Qg3 Qxb2 46.Qe3 Qb4 47.Rc1 Qd6+ 48.Qg3 Qe6 49.Rg1 Qf7 50.Qg6 Qe7 51.Rb1 Qf8 52.Rb2 Qd6+ 53.Qg3 Qd4 54.Re2 Bc6 55.f3 Qc3 56.Rg2 Ng8 57.a3 Qd4 58.h4 Qf6 59.Qg5 Qf7 60.Qg6 Qc7+ 61.Qg3 Qb7 62.Rf2 Qa8 63.Rg2 Qf8 64.a4 Nh6 65.Kg1 Bxa4 66.Qg5 Be8 67.Re2 Bf7 68.Kh2 Qc8 69.Rg2 Nf5 70.Qf4 Kh7 71.Re2 Bg6 72.Re4 Qc2+ 73.Kg1 Qb2 74.Qe5 Qc1+ 75.Re1 Qa3 76.Qf4 Qd3 77.Rf1 Nd4 78.Kg2 Qe2+ 79.Rf2 Ne6 80.Qd2 Qe5 81.Rf1 Nd4 82.Qe1 Qf4 83.Qg3 Qe3 84.Qf2 Nf5 85.Kg1 Qd3 86.Re1 Bf7 87.Qe2 Qd4+ 88.Qf2 Nxh4 89.Qxd4 Nxf3+ 90.Kg2 0-1

Round 7
Shredder - Jonny ½-½, Shredder is the new champion, Jonny and Komodo need a playoff for runner up [Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.02"] [Round "7.1"] [White "Shredder"] [Black "Jonny"] [Result "1/2-1/2"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.e3 Nbd7 6.Qc2 Bd6 7.Bd3 O-O 8.O-O dxc4 9.Bxc4 Qe7 10.h3 b5 11.Bd3 Bb7 12.e4 e5 13.dxe5 Nxe5 14.Nxe5 Bxe5 15.Be3 Rfe8 16.Rfd1 a6 17.Ne2 Bd6 18.a4 Rac8 19.Nd4 g6 20.Nf3 Nh5 21.Qd2 Rcd8 22.Bg5 f6 23.Be3 Kh8 24.Qc1 Rd7 25.Bb6 Qf7 26.Bc2 Nf4 27.Qd2 Ree7 28.Be3 g5 29.Qe1 Re8 30.Qf1 Bc8 31.axb5 cxb5 32.Rac1 Bb8 33.Bb1 Qg7 34.Nh2 Red8 35.Rxd7 Qxd7 36.Kh1 Bb7 37.Bb6 Rc8 38.Rd1 Qe6 39.Bd4 h5 40.Nf3 Kg8 41.Qe1 Nxh3 42.Qa5 Qd7 43.Qa2+ Kg7 44.Qb3 Qg4 45.Nh2 Qf4 46.Qxh3 Rc1 47.Rg1 Rxb1 48.Rxb1 Qxe4 49.Rf1 Qxd4 50.Qxh5 Qe4 51.Nf3 Qd5 52.Qe8 Bd6 53.Qd7+ Kg6 54.Re1 a5 55.Qg4 Kf7 56.Nd4 Kg6 57.Rd1 Qe5 58.Kg1 Bc5 59.Nxb5 Bxf2+ 60.Kxf2 Qxb5 61.Qd4 Qf5+ 62.Kg1 Bc6 63.Qc4 Bb5 64.Qg8+ Kh6 65.Qd5 Qc2 66.Rd2 Qc1+ 67.Kh2 Qe1 68.Rd4 Qf2 69.Re4 Qf1 70.Rg4 Qe2 71.Rg3 Bc4 72.Qd4 Kg6 73.Ra3 Bb5 74.Re3 Qc2 75.Rc3 Qe2 76.Qd5 Kg7 77.b3 Qe1 78.Qd4 Qe8 79.Rc5 Kg6 80.Qd5 Bd7 81.Qd3+ Kg7 82.Rxa5 Qb8+ 83.Kh1 Be6 84.Qd4 Qxb3 85.Rxg5+ Kf7 86.Qa7+ Ke8 87.Qa8+ Kf7 88.Qg8+ Ke7 89.Qg7+ Bf7 90.Rg3 Qd1+ 91.Kh2 Qh5+ 92.Rh3 Qe5+ 93.Qg3 Qxg3+ 94.Kxg3 Bd5 95.Rh8 Kd6 96.Re8 Bc6 1/2-1/2

=Publications=
 * The Board of the ICGA (2017). Five ICGA Events in Leiden, the Netherlands: July, 2017. ICGA Journal, Vol. 39, No. 1
 * Jan Krabbenbos, Jaap van den Herik, Guy Haworth (2017). 7th World Chess Software Championship. pdf
 * Jan Krabbenbos, Jaap van den Herik, Guy Haworth (2018). WCSC 2017: The 7th World Chess Software Championship. ICGA Journal, Vol. 40, No. 1

=Postings=
 * 2017 Events in Leiden by Jan Krabbenbos, ICGA, April 22, 2017
 * Re: Important announcement: World Computer Chess Championship by Mark Lefler, CCC, June 09, 2017
 * Important announcement: World Computer Chess Championship – A New Format by Mark Lefler on behalf of David Levy, ICGA, June 07, 2017
 * World Computer Chess Championship – The first success of a new format by Mark Lefler on behalf of David Levy, ICGA, June 19, 2017
 * Participants - World Chess Software Championship (July 1st-2nd) by Mark Lefler, ICGA, June 19, 2017
 * WCSC pairings and games by Jan Krabbenbos, ICGA, July 01, 2017
 * 2017 World Computer Software Championship 2017 by Mark Lefler, CCC, July 01, 2017

=External Links=
 * WCSC 2017 | ICGA
 * Events 2017: Day 1 | ICGA
 * WCSC 2017 - Results and Pairings

=References=

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