1...Kc5 2.Qb7 Kd4 3.Qe7 Kc3 4.Qb4# 2...Kd6 3.Sf3 Kc5 4.Qc7#ž(MM) 1.Qc6? 1...Ke5 2.Sg2 Kd4 3.Qc4+ Ke5 4.Qf4# but: 1...Ke3! 1.Qh3? 1...Kc5 2.Qe6 Kd4 3.Qe7 Kc3 4.Qb4# but: 1...Ke5! 1.Qh5?, Ke3!; 1.Sg2?, Kc3!; 1.Qf3?, Ke5! 1.Qh6! 1...Kc3 2.Qe3+ Kb2 3.Qb3+ 3...Ka1 4.Sc2# 3...Kc1 4.Qc2# 1...Ke5 2.Sg2 Ke4 3.Qe3+ Kf5 4.Qf4#(MM) 1...Ke4 2.Qg5 Kd4 3.Qe7 Kc3 4.Qb4# (1...Kc5 2.Sg2 Kd4 3.Qe3#) - mat by various pieces with the same field c2- - play in tree pfasis