Here are some chess puzzles from the games of Antoaneta Stefanova. White to move and win except where noted.
Solutions are between the brackets under each puzzle. Drag your cursor from one bracket to the other.
a) Stefanova vs Ellen Hagesaether, Rimavska Sobota, 1992 2rr2k1/p1qn1pb1/2pQ1npp/4p3/1P2P3/4BNPB/P4P1P/2RR2K1 w - - 0 1 [ Qxc7 Rxc7 Nxe5 ]
b) Stefanova vs M Vasilzeva, Rimavska Sobota, 1992 1r2k2r/p2qbppp/4bn2/4p1B1/Q2pN3/6P1/PP2PPBP/R4RK1 w - - 0 1 [ Nxf6+ & Bc6 ]
c) Stefanova vs Dmitrij Scerbin, Mlada Boleslav, 1993 r3rk2/p4p1p/6p1/2N1p3/4P1b1/n5P1/P4P1P/2RR1BK1 w - - 0 1 [ f3 if Bxf3 Rd3 or if Be6 Rc3 ]
d) Stefanova vs Bojana Jevtic, Becici, 1994 8/kpr1q3/rR2p1p1/P4p1p/1Q1PpP1P/4P1P1/4K3/1R6 w - - 0 1 [ Rxa6+ ]
e) Stefanova vs Pavlina Chilingirova, Nadole, 1995 r2qkb1r/pp1nppp1/3p3p/3N4/3NP3/4P3/PPP3PP/R2Q1RK1 w - - 0 1 [ Ne6 ]
Stefanova Puzzles, Part II. White to move and win except where noted.
a) Stefanova vs Stephen Giddins, Antwerp, 1997 1r5k/1pq3bp/3NQ1p1/1PP5/1n3P2/4P3/3r2PP/2R2RK1 w - - 0 1 [ b6 ]
b) Stefanova vs Lluis Bohigas Santasusagna, Barbera, 1998 rnbq1rk1/pp1nppbp/6p1/2pNP3/5B2/5N2/PPPQ1PPP/2KR1B1R w - - 0 1 [ e6 fxe6 Nc7 ]
c) Stefanova vs Diana Darchia, Groningen, 1998 rn2k2r/p1p2qpp/1p1bpp2/7Q/3PpN2/2P1P1B1/PP3PPP/R3KR2 w - - 0 1 [ Nxe6 Ke7 (if g6 Qd5 or if Qxh5 Nxg7+) Bxd6+ cxd6 Qxf7+ w/Nc7 ]
d) Stefanova vs Chen Zhu, Groningen, 1998 8/3n2p1/p1k4p/2P2Nn1/1R6/1Nr2PK1/7P/8 w - - 0 1 [ Ne7+ w/Nd5+ ]
e) Stefanova vs Reinhard Jaenig, Bolzano, 1999 3r3k/1P4pp/1r2ppn1/2b2q2/8/1Q1pP1BP/3N1PP1/2RR2K1 w - - 0 1 [ Qxb6 w/Rc8 ]
Stefanova Puzzles, Part III. White to move and win.
a) Stefanova vs Ilgar Badjarani, Dubai, 1999 2rrn1k1/p3ppnp/1qp4Q/1p2N1R1/P7/1P1P2PP/3NP1K1/R7 w - - 0 1 [ Nxf7 if Kxf7 Rf1+ mates or if Rd7 Qe6 mates ]
b) Stefanova vs Tea Bosboom-Lanchava, Groningen, 1999 4r3/r1p1Pk2/p2p3p/1p1Nqbp1/3n4/2P1Q2B/PP3P1P/2K1R2R w - - 0 1 [ Bxf5 if Nxf5 Qf3 ]
c) Stefanova vs Gustavo Cortes Gallardo, Malaga, 2000 3rr1k1/p2n1pp1/bp2p2p/3pP2Q/2p2P2/2P1qN2/1PB3PP/R4R1K w - - 0 1 [ Nd4 if Nc5 Rae1 or if Bb7 Rf3 ]
d) Stefanova vs Elena Sedina, Leon, 2001 2krr3/1pq3pp/2p1np2/b1n1p3/P1N1P3/1QP1B1PP/5PB1/1R1R2K1 w - - 0 1 [ Qa3 if Rxd1 Rxd1 Nd7 Nd6+ or if Na6 Rxd8+ Rxd8 Nxa5 ]
Stefanova Puzzles, Part IV. White to move and win.
a) Stefanova vs Monica Calzetta, Warsaw, 2001 r1b2rk1/pp1p1pbp/1q2p1pn/1N6/Q1Pp1B2/6P1/PP2PPBP/R3K2R w - - 0 1 [ Bc7 if Qc5 Bd6 ]
b) Stefanova vs Milen Vasilev, Kocaeli, 2002 r3r3/1b1n1pp1/5n1p/3k1P2/2Np4/2P4N/1R2B1PP/5RK1 w - - 0 1 [ Nf4+ Kc6 Bf3+ if Kc5 Rxb7 Kxc4 Rc7+ ]
c) Stefanova vs Rudin Hamdani, Surabaya, 2002 8/1p5p/1r1p2pk/2pPq3/p7/2P5/1P3QPP/5RK1 w - - 0 1 [ Qh4+ if Kg7 Qd8 Ra6 Qf8# or if Qh5 Qd8 Ra6 Qf8+ mates ]
d) Stefanova vs Lilit Mkrtchian, Varna, 2002 1rqr2k1/p5pp/b1pPp3/3n4/4N3/6PB/PP5P/R2RQ1K1 w - - 0 1 [ Nc5 if Rxd6 Qe5 ]
e) Stefanova vs Alexandra Stiri, Rethymnon, 2003 3r2k1/3P2p1/p6p/1p5r/3Q3P/1P6/P4P2/5K2 w - - 0 1 [ Qb6 Rxd7 Qe6+ Rf7 Qe8+ ]
Stefanova Puzzles, Part V. White to move and win except where noted.
a) Stefanova vs Carolina Lujan, Calvia, 2004 2q5/kp6/p7/6Qp/P1prp3/1P6/2P3PP/4R2K w - - 0 1 [ Qe3 if Qc5 b4 ]
b) Stefanova vs Nikolaos Skalkotas, Athens, 2005 3q1rk1/r6p/2Rp4/pp1PpRP1/6pP/6n1/PP2P1B1/2Q3K1 w - - 0 1 [ Rxf8+ Qxf8 Qe3 ]
c) Stefanova vs P Harikrishna, Cap d'Agde, 2006 2R5/5rpk/4N2p/4p3/7P/3n2P1/5PK1/8 w - - 0 1 [ Nf8+ if Kg8 Ng6+ mates ]
d) Black to move and win. Stela Milanova vs Stefanova, Pernik, 1992 2kr1b1r/p1p2ppp/2p2n2/q7/3N2b1/2N2P2/PPP3PP/R1BQ1RK1 b - - 0 1 [ ...Rxd4 ]
e) Black Mates in 4. Ketevan Arakhamia-Grant vs Stefanova, Belgrade, 1994 3Rr2k/pp4pb/2p4p/2P1n3/1P1Q3P/4r1q1/PB4B1/5RK1 b - - 0 1 [ ...Nf3+ ]
Stefanova Puzzles, Part VI. Black to move and win except where noted.
a) Black Mates in 5. Paulo Felizes vs Stefanova, Las Palmas, 1996 4r1k1/pp1Q1ppp/5p2/8/3P1nK1/5P2/P5PP/4q1NR b - - 0 1 [ ...h5+ if Kf5 g6+ Kxf4 g5+ Kf5 Qb1+ ]
b) Zhu Chen vs Stefanova, Groningen, 1999 r5k1/2p3pp/8/r2bR3/P3N3/4n1P1/6BP/R5K1 b - - 0 1 [ ...Nxg2 if Kxg2 Bb7 ]
c) Turkan Mamedjarova vs Stefanova, Kocaeli, 2002 4rb1k/ppqr2pp/2p1n3/4pN1b/4P3/2Q1BNRP/PPP2P1K/6R1 b - - 0 1 [ ...Bxf3 if Rxf3 Nd4 w/...Ne2 ]
d) Maia Lomineishvili vs Stephanova, Istanbul, 2003 2r3k1/2r2pp1/q3p3/n2p3p/Pp1P4/nB1RPNP1/Q4PKP/3R4 b - - 0 1 [ ...Rc3 ]
e) Elina Danielian vs Stefanova, Dresden, 2007 r3b1k1/5p2/6pp/8/pR4PP/3B2K1/1P3P2/8 b - - 0 1 [ ...a3 if bxa3 Rxa3 ]