Nigeria has a strong competitive draughts culture built around the international 10×10 game, with a national federation and players who compete internationally. Men capture in every direction and kings slide any distance along a diagonal.
Variant implemented
International draughts (10×10, 20 pieces each): men capture forwards and backwards, flying kings, compulsory maximum capture.
Board and pieces
A 10×10 board with 50 playing squares.
Setup
Twenty pieces each, filling the four rows nearest each player.
Turn
A man moves one step diagonally forward. A king slides any distance along a diagonal.
Capture and scoring
Men capture forwards and backwards. Kings capture from a distance and may land on any empty square beyond the piece they take. Capture is compulsory and you must take a maximal line.
Win condition
Capture every enemy piece, or leave your opponent with no legal move.
Draw condition
A long stretch with no capture and no promotion ends the game.
Special rules
Promotion requires the move to end on the last row. This is the international 10×10 game, which is what Nigerian competitive play uses.
Computer opponent
Alpha-beta with capture-first ordering and a material, king and advancement evaluation.