Daburu riichi: Difference between revisions

'''Daburu riichi''' {{kana|ダブル立直}} or {{kana|ダブルリーチ}}, or '''double riichi''', is a special case for riichi.  In this case, the player's [[haipai|start hand]] is already at tenpai from the dealt tiles, or the initial draw produces a tenpai hand.  Naturally, a player has the option to declare riichi at this time.  No tile call may have interrupted the turn order before the declaration, where applicable.  For the dealer, the interruption would be impossible.

Double riichi's greatest advantage, aside from its speed, is the lack of information regarding [[safe tiles]] at the beginning of the hand.  Initially, every tile is considered to be dangerous, as no to few discarded tiles show any indication of safe tiles.  However, this advantage can be worn away as every non-winning tile becomes a safe tile upon discard.  Per the [[Furiten|furiten rule]], every tile not claimed for a win after the riichi call is considered to be a safe tile - against the riichi caller.  If a winning tile does not come soon enough, then other players may actually attain tenpai in their own right and may leave the initial riichi declarer to be vulnerable.