8/8/8/8/5p2/Q1pB1P1p/p1n3pq/rk1KR3
Leonardo G. Perrone
The Problemist Supplement, 2001
s#2*
1. … g1= ~ [a] 2.Axc2 [A] Dxc2#
1. … D ~ [b] 2.Re2 [B] Dxe1#
1.Dxc3! zugzwang
1. … g1= ~ [a] 2.Db2 [C] Rxb2#
1. … D ~ [b] 2.Rd2 [D] Dxe1#
Batería real. ‘Mutate’.