figure.diagram-container
.diagram
- | fen:rnbqkbnr/1ppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR a6:
+ | fen:rnbqkbnr/1ppppppp/p7/8/4P3/8/PPPP1PPP/RNBQKBNR a6:
figcaption After 1.e4 a6, 2.Bxa6 turns the bishop into a pawn.
p If the king captures, it transforms as well but stays royal.