Coordinate the king, bishop and knight toward the right corner.
Restrict the enemy king and guide it toward a corner matching your bishop’s color. The king, bishop and knight must cover different escape squares. Learn the transfer along the edge and keep track of the fifty-move rule.
Bring your knight into the attack with check
Your knight gives check, so the opponent must answer it. In this continuation, your bishop gives the final checkmate.
2 more clean runs (at any point) to reach Recall.