--- /dev/null
+p.boxed
+ | Pieces only move forward,
+ | until they reach the last rank where they promote.
+
+p.
+ Knights and bishops must move strictly forward, as in Draughts game.
+ Rooks, queen and king can also move laterally, on the same rank.
+ Pawns move as usual and are promoted into bidirectional pawns,
+ able to move and capture both ways.
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:1qnrkrbb/pppppp1p/1n4p1/8/3B1P2/8/PPPPP1PP/RBKQNR1N c5,b6,e5,f6,g7,h8:
+ .diagram.diag22
+ | fen:1qnrkrbC/pppppp1p/1n4p1/8/5P2/8/PPPPP1PP/RBKQNR1N:
+ figcaption Before and after 1.Bxh8
+
+p Promoted pieces appear in yellow (for white) and red (for black).
+
+h3 Source
+
+p
+ a(href="https://www.chessvariants.com/diffmove.dir/checkers.html")
+ | Checkers Chess
+ | on chessvariants.com.
+
+p Inventor: Hans Multhopp (1974)