Richard Becker (USA)
 
#8 4+3

1.Kc2 Be6 [ 1...Bd3+ 2.Kxd3 a2 3.Bb5 Kb2 4.Bc4+ Ka3 5.Bxa2 Kxa2 ( 5...Ka4 6.Bc4 (Kc3) 6...Ka5 7.Kc3 (Bc4) 7...Ka4 8.Ra7#) 6.Kc3 Ka1 7.Kc2 Ka2 8.Ra7#; 1...a2 2.Rg7 ( 2.Kc3? Bf1! 3.Bh5 ( 3.Rb2 Bd3; 3.Rd7 Be2) 3...Bg2 4.Rd7 Be4) 2...Bf1 ( 2...Bd3+ 3.Kc3 Bf5 4.Ba4 Bb1 5.Bd1 Bg6 6.Rxg6 Kb1 7.Bc2+ Kc1 8.Rg1#) 3.Bh5 Bg2 ( 3...Bd3+ 4.Kc3 Be4 5.Rg1+ Bb1 6.Bd1 Bd3 7.Bc2+ Bf1 8.Rxf1#) 4.Bd1 Be4+ ( 4...Bf1 5.Rg1 Bd3+ 6.Kc3 Bb1 7.Re1 Bh7 8.Bc2#) 5.Kc3 Kb1 6.Bc2+ Bxc2 7.Rg1+ Bd1 8.Rxd1#; 1...Bb5 2.Bxb5 a2 3.Kd3 etc.; 1...Bd5 2.Rb1+ Ka2 3.Re1 etc.; 1...Ka2 2.Bf7 Bxf7 3.Rxf7 etc.] 2.Rb1+ Ka2 3.Re1 [ 3.Rf1? Bb3+! 4.Kc3 Bc4 5.Bf7 Bxf7 6.Rxf7 Kb1 7.Rf2 Ka1; 3.Rg1? Bf5+! 4.Kc3 Bb1 5.Bf7+ Ka1 6.Bb3 a2 7.Bd1 Bd3] 3...Bf5+ [ 3...Bg8 4.Kc3 ( 4.Bg6? Bh7 5.Rg1 Bg8) 4...Bd5 5.Bg6 Bg8 6.Bb1+ Ka1 7.Bh7+ Ka2 8.Bxg8#] 4.Kc3 Bb1 5.Bf7+ [ 5.Ba4? Bc2! 6.Bxc2 stalemate; 5.Bh5? Bg6! 6.Re2+ Kb1 7.Bxg6+ Ka1] 5...Ka1 6.Bb3 a2 7.Bd1 Bh7 8.Bc2# . Multiple formation of R-B batteries. (Autor)