Riichi Mahjong is a kind of Mahjong commonly played in Japan. It is famous for being suited to gambling and mahjong parlors.

Rīchi mahjong is the Japanese variant of the "set-building" game played with a standard set of tiles. While tiles are the primary medium, the game is available as online web services (net mahjong) or can be played with regular mahjong playing cards. It's a four player game that combines calculation and strategies that is found in competitive games like chess with the elements of observation skills, risk assessment, and luck.

While Rīchi mahjong shares many general principles with the other mahjong variants, it has very distinct rule variations, especially with scoring. It is the objective of each player to develop their hands to accumulate more points than any of the opponents. In combination with yaku and dora, the number of han and fu correlates to a specific number of points to determine the value of a hand, in the event of winning a hand.

Relevant links:

  • European Mahjong Association (Official; Information on rules, upcoming tournaments, tournament results and observer reports, player rankings and the rules in English)
  • UK Mahjong Association (Official; Information on Riichi open tournaments, affiliated clubs and other things)
  • tenhou.net (Japanese) (Free net mahjong, playing history, detailed statistics and replays, many active players regardless of time of day)
  • Japanese Mahjong Wiki (Encyclopedic information on rules, terminology, and strategies that anyone can contribute to)
  • Riichi Mahjong on Saki Wikia (Details and more information on the game)
  • Osamuko's Japanese Mahjong Blog (One of the most extensive online mahjong blogs in English)
  • ReachMahjong.com (Ran by professional players who wrote the Riichi Mahjong study book; you can find more WWYD problems and discussions, strategy guides, reports on tournaments and more)
  • Mahjong News (Updated regularly with information on upcoming mahjong tournaments (Riichi, MCR, and on- line), their results, newly released mahjong books, and more)