Correct answer: Rd41. Rd4! [2. Nd6, Nf6, Nc5, Nc3, Ng3, Nd2, Nf2#] 1. ... Nd6 2. N:d6# 1. ... Nef6, Nhf6 2. N:f6# 1. ... c6 2. Nd2# 1. ... c5,
