Author: Robert Allgeuer
Date: 10:19:24 10/14/04
I have collected Zugzwang positions from various sources (CCC, Rebel, Internet, Books etc.) and put them together into a small testsuite of Zugzwang positions. There is no originality to this, but having those positions in one place may be interesting for some people, I hope. It is obvious that running this test suite only makes sense without tablebases. All comments welcome! Robert 8/8/1p1r1k2/p1pPN1p1/P3KnP1/1P6/8/3R4 b - - bm Nxd5; id "ZPTS.01"; CCC post 27.4.2004 by Gerd Isenberg 4KBkr/7p/6PP/4P3/8/3P1p2/8/8 w - - bm g7; id "ZPTS.02"; CCC post 27.4.2004 by Gerd Isenberg 8/6B1/p5p1/Pp4kp/1P5r/5P1Q/4q1PK/8 w - - bm Qxh4; id "ZPTS.03"; CCC post 10.9.2004 by Alvaro Begue 8/8/8/2p5/1pp5/brpp4/1pprp2P/qnkbK3 w - - bm h3; id "ZPTS.04"; CCC post by Joachim Rang, mate in 15 6Q1/8/8/7k/8/8/3p1pp1/3Kbrrb w - - bm Qg7; id "ZPTS.05"; CCC post by Joachim Rang, mate in 4 n1QBq1k1/5p1p/5KP1/p7/8/8/8/8 w - - bm Bc7; id "ZPTS.06"; CCC post 3nQ1k1/p2P2p1/1p6/8/5q1P/8/PP6/1K6 b - - bm Kh7; id "ZPTS.07"; CCC post 8/8/8/1B6/6p1/8/4KPpp/3N2kr w - - bm Kd3 Ke3; id "ZPTS.08"; CCC post by Tim Foden, id "MES.831" 8/3p1p2/5Ppp/K2R2bk/4pPrr/6Pp/4B2P/3N4 w - - bm Nc3; id "ZPTS.09"; CCC post by Tim Foden, id "CCC.321751" 8/1B6/8/5p2/8/8/5Qrq/1K1R2bk w - - bm Qa7; id "ZPTS.10"; CCC post by Tim Foden, id "CCC.321759" 5R2/2K5/1pP5/4k2p/3pp3/2p4N/B4N1b/n1R1B2b w - - bm Rxc4; id "ZPTS.11"; CCC post by Tim Foden, id "CCC.321966" 4B3/8/p7/k2N4/7p/K6p/PP5P/2q5 w - - bm Ba4; id "ZPTS.12"; CCC post by Tim Foden, id "CCC.347609" 3k4/8/4K3/2R5/8/8/8/8 w - - bm Rc6; id "ZPTS.13"; CCC post 1k6/7R/2K5/8/8/8/8/8 w - - bm Rh8; id "ZPTS.14"; CCC post 8/3k4/8/8/3PK3/8/8/8 w - - bm Kd5; id "ZPTS.15"; CCC post 2k5/8/1K1P4/8/8/8/8/8 w - - bm Kc6; id "ZPTS.16"; white wins 1b6/8/8/7p/6k1/6P1/8/6K1 w - - bm Kg2; id "ZPTS.17"; CCC post by Dr. Robert Hyatt, draw k2N2K1/8/8/8/5R2/3n4/3p4/8 w - - bm Rf7; id "ZPTS.18"; CCC post by Ed Schroeder, Troitzky 2n5/8/Pp5n/5N2/8/5k2/3P4/7K w - - bm d4; id "ZPTS.19"; CCC post by Ed Schroeder, Troitzky 8/5b2/p2k4/1p1p1p1p/1P1K1P1P/2P1PB2/8/8 w - - bm Be2; id "ZPTS.20"; CCC post by Sune Fischer, white wins 8/8/p3R3/1p5p/1P5p/6rp/5K1p/7k w - - bm Re1; id "ZPTS.21"; CCC post by Eduard Nemeth, mate in 7 8/p7/1p6/p7/kq1Q4/8/K7/8 w - - bm Qd3; id "ZPTS.22"; post in Avler chess forum 8/8/8/4N3/8/7p/8/5K1k w - - bm Ng4; id "ZPTS.23"; white mates 1r4RK/2n5/7k/8/8/8/8/8 b - - bm Ne8; id "ZPTS.24"; Polgar - Kasparov, 1996: black wins after 91. Rf8, Kg6 92. Rg8+, Kf7 8/8/1p1K4/Pp6/2k1p3/8/1P6/8 w - - bm a6; id "ZPTS.25"; Kubbel 1927, 1 ... e3 2 a7 e2 3 a8/Q e1/Q 4 Qd5+ Kb4 5 Qd3!, white wins 6k1/3p4/P2P4/8/5Kp1/1p4Q1/p5p1/b7 w - - bm Qxg2; id "ZPTS.26"; Kasparyan 1959, 1 ... Be5+ 2 Kf5! a1/Q 3 a7! Qxa7 4 Kg6! Qa1! 5 Qd5! Kh8 6 Qe4!!, white wins 8/5p2/4b1p1/7R/5K1P/2r3B1/7N/4b1k1 w - - bm Nf3; id "ZPTS.27"; Noam Elkies 1984, 1 Nf3+! Rxf3+! 2 Kxf3 Bg4+! 3 Kf4!! Bxg3+ 4 Kxg4 gxh5+ 5 Kh3!! Kf1 6 Kxg3 Ke2 7 Kf4 f6 8 Kf5 Kf3 9 Kxf6 Kg4 10 Ke5 Kh4 11 Kf4, draw 8/8/7p/2R5/4pp1K/8/8/3k2b1 w - - bm Rc4; id "ZPTS.28"; Kricheli 1986, 1 Rc4! e3 2 Rd4+! Kc2 3 Rxf4 e2 4 Re4 Kd2 5 Rxe2+ Kxe2 6 Kg4!, draw 8/1p5k/1P1p4/3p4/3Pp2p/2K1P2p/7P/8 w - - bm Kb2; id "ZPTS.29"; 1 Kb2! Kg8 2 Ka1!!, draw 8/3p1N2/8/4B3/2K2p2/b3P3/pP2P3/k7 b - - bm d6; id "ZPTS.30"; Noam Elkies 1987, 1 ... d6! 2 Bc3!! Bxb2 3 Kb3! Bxc3 4 Kc2 fxe3 5 Nd6 Ba5! 6 Nf5 Bb6 7 Ne7 Bd4 8 Nd5 Bc5 9 Nf4 Bb4(d6,e7,f8) 10 Ne6 Bc5! 11 Nd8! Bd4 12 Nb7! Bb6 13 Kc1!, mate in 16
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