Minefield mahjong

Minefield mahjong is a specialized mahjong variant found in the anime and manga series, Kaiji. This variant features two players, taking 34 tiles and arranging them to form tenpai hands using 13 of them. Any remaining tiles are used as player discards, where the players take turns making their discards. In a sense, this can be interpreted as a tile discard reading drill for defense practice.

Rules

• Players gather 34 tiles.
• Of the 34, 13 tiles are used to form a tenpai hand.
• Remaining tiles are to be used for discards.
• Players take turns making those discards.
• Order of which player makes the first discard may be determined with various methods, such as the dice roll or a coin flip.
• Naturally, if a discarded tile is a winning tile, then ron may be called.
• A player may not win with one's own discard.
• If a winning tile is discarded, then furiten is invoked.
• An additional rule to the hand formation may require players to produce a mangan or better hand.