[ 1.ef6? bc7 2.gh6 fe7 3.cd6 ( 3.hg7 e:g5 4.gh8 gf4 5.hd4 cd6 6.c:e7 d:f6 7.d:g7 fe3= ) 3...e:c5 4.hg7 cb4! 5.gh8 ba3!= ]

[ 1...fe7 2.cd6!! 2...e:c5 3.hg7 cb4 4.ed6! bc7 ( 4...bc3 5.gh8 cd2 6.de7 d:f6 7.h:e1 ; 4...ba3 5.gh8 ) 5.d:b8 bc3 6.be5! ( 6.gh8 cd2 7.hc3 d:b4 8.be5 dc7 9.e:b8 bc3= ) 6...cd2 7.ec3 d:b4 8.gh8 ]

[ 2.ef6? fe7 3.cd6 e:c5 4.hg7 cb4 5.gh8 ba3 6.fe7 d:f6 7.h:b8 ab2= ]

[ 3.ef6? ba5 4.fg7 ab4! ( 4...de7? 5.gh8 e:c5 6.hc3 cb4 7.cd4 ba3 8.da1 ab4 9.ad4 fe7 10.hg7+- ) 5.gh8 de7! 6.dc7 ed6 7.c:e5 bc3= ]

[ 5.ed6? bc3! ( 5...dc7? 6.de7 f:d6 7.hg7 bc3 8.gf8 de5 9.b:f4 cb2 10.fg7 ) 6.ba7 de7 7.ac5 ( 7.dc7 cb2 8.ad4 ba1 9.dh8 ef6= ) 7...ef6= ]

[ 5.ba7? bc3 6.ed6 de7! 7.ac5 ( 7.hg7 f:h6 8.d:f8 cb2= ) 7...ef6= 8.ce3 cb2 9.ed4 bc1 10.d:h8 cf4 11.he5 fh2= ]

[ 6...dc7 7.f:b8 cd2 8.fe7 f:d6 9.b:c1 ]