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+p.boxed
+ | Pieces in the first half of the board are yours. Captures are mandatory.
+
+p.
+ All pieces are of the same color (black on the website), but in fact
+ pieces just have no color: you control all
+ pieces which stand in the half-board in front of you. These pieces can
+ only capture on the other half-board.
+
+p.
+ Since captures are mandatory, pieces could make some round-trips
+ around the board, changing owner at every mid-board crossing.
+ For example on the following diagram, the sequence will be 1.Rxd7 Rxd1
+ 2.Rxd8 and black would win, assuming the final rank is 8th.
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:3b4/3q4/8/8/8/8/3r4/3n4:
+ .diagram.diag22
+ | fen:3b4/3r4/8/8/8/8/8/3n4:
+ figcaption Before and after Rxd7
+
+p.
+ Knights become knightriders: they can make any number of knight steps in a
+ direction. There are no en-passant captures, and no castle.
+
+h3 Source
+
+p
+ | Strongly inspired by
+ a(href="http://www.wunderland.com/WTS/Andy/Games/monochess.html")
+ | Monochrome Chess
+ | , but I wanted a version without points counting.
+
+p Inventor: Andrew Looney (1996)