Mate-in-two puzzle
Classic two-board puzzle layout — position, then the move-pair solution. Demonstrates multi-FEN rendering.
Make it your own.
# title: White to move
# subtitle: Mate in 2
6k1/5ppp/8/8/8/8/5PPP/3R2K1 w - - 0 1
# title: After 1. Rd8+
3R2k1/5ppp/8/8/8/8/5PPP/6K1 b - - 1 1