Correct answer: Qc21. ... b4 2. Qa6# 1. ... c:d4 2. Qc6# 1. Qe4 ? [2. Nd4~#] 1. ... b4 2. Ba6# 1. ... c:d4 2. Q:d4# But 1. ... R:d5! 1. Qc2! [2. Q:a2#]
