lunes, 28 de marzo de 2011

Táctica Obstrucción. Soluciones


Aquí las 65 posiciones resueltas del tema táctico . 

Nivel 1: 1-22 posiciones
(pasas de nivel con 16 soluciones correctas)
Nivel 2: 23-44 posiciones  
(pasas de nivel con 16 soluciones correctas)
Nivel 3: 45-65 posiciones 
(pasas de nivel con 16 soluciones correctas)

chessbase
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 1"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "k1r1r3/p5p1/1b1Q4/nN2B3/4p3/1B3pPq/1P3P1P/R2R3K w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Bd5+ Nb7 2. Qb8+ Rxb8 3. Rxa7+ Bxa7 4. Nc7# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 2"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "4rk2/1pq2p2/r2nP3/p3p3/P6Q/3R4/1PP5/3R2K1 w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. e7+ $18 Rxe7 (1... Kg7 2. Rg3#) 2. Qh8# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 3"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "2r1k3/pR2nr1Q/3q4/P7/3p1p2/P1p3P1/7P/4R1K1 w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Qg8+ Rf8 2. Qg6+ $1 Qxg6 3. Rexe7+ Kd8 4. Rbd7# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 4"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r2n1k2/p3n2R/3ppNp1/1pp3N1/4pP2/3P4/PPPK2B1/8 w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. Rf7+ $1 Nxf7 2. Nxe6# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 5"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "6R1/8/5r1p/4Q3/3P2pk/8/5qPK/8 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Qg5+ $1 hxg5 2. Rh8+ Rh6 3. Rxh6# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 6"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/1p6/5p2/1p1pNP2/1P1k1KP1/3P1p2/2PB1PbP/q7 w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. c3+ Qxc3 2. Be3# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 7"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "1r6/5RR1/7p/2p1r1p1/2p1P1k1/3P2P1/2P3K1/8 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Rf4+ Kh5 2. Rh4+ gxh4 3. g4# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 8"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/6bp/1R4p1/p3p3/kp2r1Pr/3RB3/PPP1K3/8 w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. Ra3+ $1 bxa3 2. b3# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 9"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "N1k1rb1r/1p4pp/n1Npbp2/Q2p4/8/4B2q/PPP2P1P/1K1R2R1 w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. Qc7+ $1 Nxc7 2. Nb6# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 10"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r4r2/pb3pk1/1pn3p1/2ppqPQ1/8/2NBP3/PP4P1/2KR3R w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. f6+ $18 Qxf6 (1... Kg8 2. Rh8+ Kxh8 3. Qh6+ Kg8 4. Qg7#) 2. Qh6+ Kg8 3. Qh7# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 11"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/8/1k6/6B1/2n5/1p6/r3B3/2NKR3 b - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1... Rd2+ 2. Bxd2 Nb2# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 12"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r4rk1/1pq1n1p1/p2pbP2/5p1Q/8/2P4R/P1PB2PP/R6K w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. f7+ Rxf7 2. Qh8# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 13"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "2rr4/1b2bpkP/p3pn2/R7/3P4/1qB2P2/1P6/1K5R w - - 0 3"] [PlyCount "7"] [SourceDate "2007.01.01"] 3. h8=Q+ Rxh8 4. Rg5+ Kf8 5. Rxh8+ Ng8 6. Rhxg8# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 14"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r1b1rN1k/1pqn2p1/p1p2n1p/4P3/2B5/P3P2P/1PQ2PP1/2R2RK1 w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. Qh7+ $1 Nxh7 2. Ng6# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 15"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r1rq1Bk1/1p3p2/p4p2/2bPp2Q/2P5/3B4/PP4PP/3R3K w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Be7 $1 Qxe7 2. Qh7+ Kf8 3. Qh8# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 16"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "4rrk1/pp3ppp/2n5/3N3R/7q/8/P3Q1PP/3R3K w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Qxe8 $1 Qxh5 2. Ne7+ Nxe7 3. Qxf8+ Kxf8 4. Rd8# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 17"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r4Nk1/1p2pp1p/p1np2p1/3N4/P2qPPn1/3B4/1bPK2PP/R2Q1R2 b - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1... Bc3+ 2. Ke2 (2. Nxc3 Qe3#) (2. Kc1 Bxa1 $19) 2... Qe3+ $1 3. Nxe3 Nd4# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 18"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r4r2/1p1bk3/pqp1N1Q1/2bP4/8/6B1/n5PP/7K w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. d6+ Bxd6 2. Bh4+ Rf6 3. Qxf6+ Ke8 4. Qg6# {Lissitsin} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 19"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "1k1B3r/1p2Qp2/4b1pP/p3P3/P2p1p2/1q6/2R2P1P/2K5 w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Qc7+ Ka7 2. Qxa5+ Kb8 3. Rc8+ Bxc8 (3... Kxc8 4. Qc7#) 4. Bc7# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 20"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "n3brk1/4pp2/pq1p2pB/2nPbPN1/P1p1P1PQ/2N4P/1rB5/R4R1K w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Bg7 $1 Kxg7 2. f6+ $1 Bxf6 3. Qh7# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 21"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r3nk2/1p1r2b1/1p4P1/3npNN1/8/3P4/PP4K1/R1B4R w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Rh8+ Bxh8 2. Ne6+ Kg8 3. Nh6# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 22"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "2r2r2/ppk3pp/3NQ1p1/4p3/n7/8/2PP2q1/2KR4 w - - 0 1"] [PlyCount "11"] [SourceDate "2007.01.01"] 1. Nb5+ Kb8 (1... Kd8 2. Qd6+ Ke8 3. Qxe5+ Kf7 (3... Kd8 4. Qd6+ Ke8 5. Re1+ Kf7 6. Qe6#) 4. Nd6+ Kg8 5. Qe6+ Kh8 6. Nf7+ Kg8 7. Nh6+ Kh8 8. Qg8+ Rxg8 9. Nf7#) 2. Qd6+ Ka8 3. Nc7+ Kb8 (3... Rxc7 4. Qxf8+ Rc8 5. Qxc8#) 4. Na6+ Ka8 5. Qb8+ Rxb8 6. Nc7# {Kenlein} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 23"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "6k1/pp3p1p/2p3p1/3p3n/1P1P1q2/P4N1P/3Qn1B1/1RR4K b - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1... Nhg3+ 2. Kh2 Nf1+ 3. Kh1 Qh2+ 4. Nxh2 Nfg3# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 24"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "5rk1/6pp/p1pNr3/2Pb1p2/qP6/P1Q2p2/6PP/3RR1K1 w - - 0 1"] [PlyCount "13"] [SourceDate "2007.01.01"] 1. Rxd5 Rxe1+ 2. Qxe1 cxd5 3. Qe6+ Kh8 4. Nf7+ Kg8 5. Nh6+ Kh8 6. Qg8+ Rxg8 7. Nf7# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 25"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r3r2k/pb2q1p1/1p2Nn1p/2b5/2B5/2P2P2/PPQ3PP/4RR1K w - - 0 1"] [PlyCount "9"] [SourceDate "2007.01.01"] 1. Nf4 Qxe1 2. Ng6+ Kh7 3. Nf8+ Kh8 4. Qh7+ Nxh7 5. Ng6# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 26"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "3r1k2/1q1r1pp1/3p2bp/p2N4/8/2P1RQ1P/P4PP1/4R1K1 w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Nf6 $1 gxf6 (1... Qxf3 2. Re8+ Rxe8 3. Rxe8#) 2. Qxf6 Bh7 (2... Kg8 3. Re8+ Rxe8 (3... Kh7 4. Qh8#) 4. Rxe8+ Kh7 5. Rh8#) 3. Qh8+ Bg8 4. Qxh6# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 27"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "3q4/p2rRpkp/1p4p1/2p5/3p4/1P1P3P/P1P1QPP1/6K1 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Qe5+ Kf8 (1... Kh6 2. Qf4+ $18) 2. Qf6 $1 Qxe7 3. Qh8# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 28"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "2r2k1r/pp3pbp/2b1p3/4p2N/q1B4Q/8/PPP3PP/2KR3R w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Qg5 Rg8 2. Rd8+ Rxd8 3. Qxd8+ Be8 4. Qd6# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 29"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/p5kp/1p3p2/6pQ/8/1P4PK/P2N4/6q1 b - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1... Qh1+ 2. Kg4 Qd1+ 3. Nf3 Qd7# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 30"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r3rk2/p3Rp1p/1qp1bQ2/8/1p1P4/6R1/PP3PPP/6K1 w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Rd7 $3 Bxd7 2. Qd6+ Re7 3. Qh6+ Ke8 4. Rg8# {Savin} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 31"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r1bq1rk1/ppp1bp1p/2n4Q/8/2BpN3/8/PPP2PPP/RN3RK1 w - - 0 1"] [PlyCount "11"] [SourceDate "2007.01.01"] 1. Nf6+ $1 Bxf6 2. Bd3 Re8 3. Bxh7+ Kh8 4. Bg6+ Kg8 5. Qh7+ Kf8 6. Qxf7# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 32"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "r4knr/ppp3bp/3pp1p1/7b/4P2q/2N1BP2/PPP1BP1P/R2Q1R1K b - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1... Bxf3+ $1 2. Bxf3 Be5 $19 * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 33"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "1R6/5p2/4P1pb/2K4p/2pB1N1k/4P3/6PP/2q5 w - - 0 1"] [PlyCount "19"] [SourceDate "2007.01.01"] 1. e7 $1 Qa3+ 2. Rb4 Qa7+ 3. Kxc4 Qxe7 4. Nxg6+ $1 fxg6 5. Bf6+ $1 Qxf6 6. Kd5+ Kg5 7. h4+ Kf5 8. g4+ hxg4 9. Rf4+ Bxf4 10. e4# {Kazantsev} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 34"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/2p5/3prpb1/4k3/4p3/4KP2/4NP2/2R5 w - - 0 1"] [PlyCount "13"] [SourceDate "2007.01.01"] 1. f4+ Kd5 (1... Kf5 2. Nd4+) 2. f5 $1 Bxf5 3. Nf4+ Ke5 4. Rd1 $1 c6 5. Rd5+ $1 cxd5 6. Nd3+ $1 exd3 7. f4# {Kakovin} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 35"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "1r5k/3P2p1/2R2nP1/8/8/6K1/8/8 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Rc8+ Ng8 2. d8=N $1 Rxc8 3. Nf7# {Kaminer} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 36"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/1p6/8/2N5/5r2/2K1kN2/8/5R2 w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. Nd3 $1 Rxf3 2. Re1# {Birnov} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 37"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/5p1p/3q3P/4kPB1/4P1K1/8/8/8 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Bf4+ Kf6 2. e5+ $1 (2. Bxd6 $2 $11) 2... Qxe5 3. Bg5# {Kalandadze} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 38"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "5kBb/5P2/8/6Q1/6K1/8/8/5q2 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Qc5+ Kg7 2. f8=Q+ Qxf8 3. Qg5# {Kalandadze& Neidze} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 39"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/2K5/3P3Q/7q/6k1/1P4P1/5P1P/5r2 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. f3+ Rxf3 2. h3+ Qxh3 3. Qg6# {Gurgenidze} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 40"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "1kr5/p1pR4/2P3pp/5p2/1N6/KP2p2P/2P2r2/8 w - - 0 1"] [PlyCount "11"] [SourceDate "2007.01.01"] 1. Na6+ Ka8 2. Nxc7+ Kb8 3. Na6+ Ka8 4. Rb7 $1 e2 (4... Rxc6 5. Rb8#) 5. Rb8+ Rxb8 6. Nc7# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 41"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "6R1/8/7b/r7/k1K5/8/1P6/8 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Rg3 $1 Bf8 2. Ra3+ Bxa3 3. b3# {Kovalenko} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 42"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/6R1/7p/5K1k/8/4b1P1/6P1/8 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Rg4 $1 Bg5 2. Rh4+ Bxh4 3. g4# {Lloyd} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 43"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/8/6R1/1p5p/2b4k/p1P1K3/6P1/8 w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Kf4 $1 a2 2. Rg3 Be6 3. Rh3+ $1 Bxh3 4. g3# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 44"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "2b3rk/5P2/7K/5N2/8/8/8/8 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Ne7 $1 Be6 (1... Rf8 2. Ng6#) 2. fxg8=Q+ Bxg8 3. Ng6# {Korolkov} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 45"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/3Q4/1p6/2p1k1Kp/2P3p1/8/3P4/7q w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. d4+ $1 cxd4 (1... Ke4 2. Qb7+ $18) 2. Qe7# {Rinck} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 46"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/2pp4/5K2/3B4/5kp1/8/6P1/4B2n w - - 0 2"] [PlyCount "3"] [SourceDate "2007.01.01"] 2. g3+ Nxg3 (2... Ke3 3. Bxh1 $18) 3. Bd2# {Dudanashvili} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 47"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/5R2/3N3r/4r1k1/5N2/6K1/8/8 w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. Rf5+ $1 Rxf5 2. Ne4# {Nadareishvili & Gurgenidze} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 48"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "2k2q2/n7/2b5/2N3Q1/8/8/4B3/6K1 w - - 0 1"] [PlyCount "11"] [SourceDate "2007.01.01"] 1. Ba6+ Kb8 (1... Kc7 2. Ne6+ $18) 2. Qg3+ Ka8 3. Bb7+ $1 Bxb7 4. Nd7 Qd8 5. Qb8+ Qxb8 6. Nb6# {Seletsky} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 49"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/4Q3/kp6/qN6/8/3P4/p1K5/8 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Qe4 $3 $18 a1=N+ (1... Qa3 2. Nc7+ Ka5 3. Qa8+ Kb4 4. Qf8+ Ka4 5. Qe8+ Kb4 ( 5... b5 6. Qxb5#) 6. Qb5#) (1... a1=Q 2. Nc7+ Ka7 3. Qa8#) 2. Kd1 Kxb5 (2... Qxb5 3. Qa8#) (2... Nb3 3. Nc7+ Ka7 4. Qa8#) 3. Qc4# {Neidze} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 50"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "5Q2/8/8/8/p7/1p6/6r1/k1KR4 w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Qa3+ Ra2 2. Rd2 $3 Rxa3 (2... b2+ 3. Qxb2+ Rxb2 4. Rxb2 a3 5. Rb1+ Ka2 6. Rb8 Ka1 7. Kc2 a2 (7... Ka2 8. Ra8 Ka1 9. Rxa3#) 8. Kb3 Kb1 9. Ka3+ Ka1 10. Rh8 Kb1 11. Rh1+ $18) 3. Rb2 $1 Ra2 4. Rb1# {Kasparian} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 51"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "n7/7R/3n4/2k5/2P5/2P5/2K5/8 w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. Ra7 Nb6 2. Rc7# {Kaminer} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 52"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "5k2/R4B1r/8/8/5K2/8/8/B7 w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. Bf6 $1 Rxf7 2. Ra8# {Neidze} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 53"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/8/7p/8/6pp/4N1Pk/5K2/8 w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Ng2 $1 hxg3+ 2. Kg1 h5 3. Kh1 h4 4. Nf4# {Troitsky} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 54"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/6q1/2k2r2/8/1K6/8/4R3/5Q2 w - - 0 1"] [PlyCount "9"] [SourceDate "2007.01.01"] 1. Re6+ $3 Rxe6 2. Qa6+ Kd5 3. Qc4+ Kd6 (3... Ke5 4. Qc3+ $18) 4. Qc5+ Kd7 5. Qa7+ $18 {Troitsky} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 55"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "3R4/2B5/8/5k2/1b2b3/4K2p/3p4/8 b - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1... Bd6 2. Rxd6 h2 * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 56"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "B7/P7/P7/k6K/8/8/7p/r7 w - - 0 1"] [PlyCount "7"] [SourceDate "2007.01.01"] 1. Bh1 $1 Rxh1 2. a8=Q Rd1 3. Qh1 Rxh1 4. a7 $18 {Fritz} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 57"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "1R3r2/2P5/1P6/K1k5/8/p7/8/8 b - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1... Rc8 $3 2. Rxc8 a2 {Stamma} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 58"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/6P1/8/2k3K1/8/8/6p1/R6r w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. Rg1 $1 Rxg1 2. g8=Q $18 {Gininger} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 59"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "K6Q/8/7P/8/8/8/p7/1r5k w - - 0 1"] [PlyCount "3"] [SourceDate "2007.01.01"] 1. Qa1 $1 Rxa1 2. h7 $18 {Kuriatnikov} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 60"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/3P1pk1/6p1/p7/P7/Q4pP1/2rp1P1P/5K2 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Qxf3 Rc1+ 2. Qd1 $3 Rxd1+ 3. Ke2 $18 * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 61"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/2pp2pp/8/2PP1P2/1p5k/8/PP4p1/6K1 w - - 0 1"] [PlyCount "15"] [SourceDate "2007.01.01"] 1. f6 $3 (1. a4 $2 bxa3 2. bxa3 Kg3 $1 3. a4 h5 4. a5 h4 5. a6 h3 6. a7 h2#) ( 1. Kxg2 $2 Kg5 2. a4 bxa3 3. bxa3 Kf6 4. a4 Ke7 5. a5 Kd8 6. a6 Kc8 7. a7 Kb7 $19) 1... gxf6 2. Kxg2 Kg5 3. a4 bxa3 4. bxa3 Kf5 5. a4 Ke5 6. d6 $1 cxd6 (6... c6 7. a5 Kd5 8. a6 Kxc5 9. a7 $18) 7. c6 $1 dxc6 8. a5 $18 {Troitsky} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 62"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/6pp/8/4kPPP/8/8/2K5/8 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. f6 gxf6 2. g6 hxg6 3. h6 $18 {Farni} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 63"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/8/1p1k4/5ppp/PPK1p3/6P1/5PP1/8 b - - 0 1"] [PlyCount "13"] [SourceDate "2007.01.01"] 1... f4 $1 2. gxf4 (2. a5 bxa5 3. bxa5 h4 4. gxf4 gxf4 5. a6 Kc6 6. Kd4 e3 7. fxe3 f3 $19) 2... gxf4 3. Kd4 e3 $1 4. fxe3 f3 5. gxf3 h4 6. Ke4 h3 7. Kf4 h2 $19 * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 64"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "2b5/2pp4/8/2B5/7P/2K5/7k/8 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Bd6+ $1 (1. h5 $2 d6 $11) 1... cxd6 2. h5 Bb7 3. Kd4 $18 {Gavashi} * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Obstrucción 65"] [Black "Solución"] [Result "*"] [SetUp "1"] [FEN "8/B7/7P/4p3/7k/8/2K5/b7 w - - 0 1"] [PlyCount "5"] [SourceDate "2007.01.01"] 1. Bd4 $3 Bxd4 (1... exd4 2. Kd3 $18) 2. Kd3 Ba1 3. Ke4 $18 {Heuecker} *