Fusion Chess vs Andernach Chess

Fusion Chess is a chess variant in which two adjacent friendly pieces may merge into one compound piece. The resulting piece combines the movement capabilities of both component pieces, creating tactical possibilities that do not occur in orthodox chess. The game is intended for players interested in modern fairy-chess variants and experimental rules involving piece combination, altered mobility,...

Andernach chess is a fairy-chess condition in which a non-king piece changes color immediately after making a capture. The captured piece is removed normally, while the capturing piece remains on the destination square and is thereafter controlled by the opposite side. Non-capturing moves follow ordinary chess movement, and a pawn that captures on the eighth rank is promoted before its color chang...