Richard Becker (USA)
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<p>1.d7 Rb8+ 2.Ka2! <br /> [ 2.Kxa3? Ra8+ 3.Kb4 ( 3.Kb3 Kd3 4.Nb4+ Kd4 5.Na6 Kd5 6.Nc7+ Kc6 = ) <br /> 3...Kd3 4.Na3 ( 4.Kb3 Rg8 = ) 4...Kd4 5.Nb5+ Kd5 6.Nc7+ Kc6 = ] <br /> Main A) 2...Kd3 3.Nb4+ Kc3 <br /> [ 3...Kc4 4.Nd6+ Kxb4 5.Nc8 -+ ] <br /> 4.Nd5+ Kd4 5.Nc7 <br /> [ 5.Ne7? Rf8 = ] <br /> 5...Kc3 6.Kxa3! <br /> [ 6.Nb5+? Kb4 7.Nbd6 Rg8(Ka4) = ] <br /> 6...Rb3+ 7.Ka4 Rb4+ 8.Ka5 Rd4 9.Nb5+(Nd6) +- <br /> Main B) 2...Kf3 3.Nd4+ Kf4 <br /> [ 3...Ke4 4.Nd6+ Kxd4 5.Nc8 +- ] <br /> 4.Ka1! <br /> [ Thematic try 4.Kxa3? Ke4 5.Nd6+ Kxd4 6.Nc8 Kc3 7.Ka4 Rb4+ 8.Ka5 Rd4= <br /> No knight fork! ] <br /> 4...a2 <br /> [ 4...Rg8 5.Ne6+ Ke4 6.Ng7 Rb8 7.Nd6+ Ke5 8.Nc8 +- ] <br /> [ 4...Kg4 5.Nc6 Rf8 6.Nd6(Ne7) +- ] <br /> 5.Kxa2 zz Kg4 6.Ka3 Kf4 7.Ka4 Ke4 8.Nd6+ Kxd4 9.Nc8 Kc4 10.Ka5 Rb5+ <br /> 11.Ka6 Rd5 12.Nb6+ +-. Author</p>
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