Correct answer: R:c61. ... e4 2. Qf7# 1. ... Kc4 2. Ncb4# 1. Nb2? waiting 1. ... e4 2. Qf5# 1. ... Kc5 2. Nb4# But 1. ... a:b6! 1. R:c6! waiting 1. ... e4 2.
