()English (United Kingdom)
igor.agapov(25.12.2018) .
948. Igor Agapov (Russia)
949
#3 v (10+7)

1.Sb2?[2.Sxc4+! Bxc4 3.d4#],1...Qd1!
1.Sb6![2.Sxc4+! (A) Bxc4 3.d4# (B)]
1...B~ 2.d4+! (B) cxd3 e.p. 3.Sc4# (A)
1...Qxd2 2.Sxg4+ (C) Sxg4 3.f4# (D)
1...Sf5 2.f4+ (D) gxf3 e.p. 3.Sg4# (C)
1...Qd1! 2.Rxh6! ~ 3.Sfd7#
2...Bg6! 3.Sxc4# (A), 2...Qa4! 3.Sxg4# (C)
Cycle of 2nd-3rd ABCD-BADC in the form of pair of reciprocal change. (Author)
Additional variation:
1...Qxe3+ 2.Rxe3+ Be4 3.Rxe4#, 2...Kd4 3.B~ #
 

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