Section D2 – h#2.5
2 solutions
1…Rb4 2.Kf5 Bc8+ 3.Kf4 Be3#
1…Rg4 2.Kd5 Bxc6+ 3.Kc4 Nd2#
Ambush (wR) × 2
Analogy (complete)
Exchange of functions (wBd4/wSe4, Mate / Passive guard)
Exchange of functions (wRb1/wRg3, Guard / Passive guard)
BK moves only × 2