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[[Image:Furiten.png|right|thumb|250px|[http://tenhou.net/0/?log=2012110112gm-0009-7447-14ec5c8d&tw=0&ts=4 Baiman tenpai], in furiten due to 9-sou in discard. Ron cannot be called here.]] | [[Image:Furiten.png|right|thumb|250px|[http://tenhou.net/0/?log=2012110112gm-0009-7447-14ec5c8d&tw=0&ts=4 Baiman tenpai], in furiten due to 9-sou in discard. Ron cannot be called here.]] | ||
'''Furiten''' {{kana|振聴}} is a restriction applied to winning hands. The player loses the ability to declare [[ron]] because of winning tile in discards. The hand in [[Tenpai|tenpai]] is furiten if any of that player's winning tiles are present in one's own discard pile which includes [[Naki|called tiles]], or another player's discard pile during a turn or after its own riichi. Furiten hands are still winnable via [[tsumo|self-draw]]. A call of ron while furiten is penalized by [[chombo]], though computer games are programmed to prevent the player from declaring such a win. | '''Furiten''' {{kana|振聴}} is a restriction applied to winning hands. The player loses the ability to declare [[ron]] because of at least one winning tile in the discards. The hand in [[Tenpai|tenpai]] is furiten if any of that player's winning tiles are present in one's own discard pile which includes [[Naki|called tiles]], or another player's discard pile during a turn or after its own riichi. Furiten hands are still winnable via [[tsumo|self-draw]]. A call of ron while furiten is penalized by [[chombo]], though computer games are programmed to prevent the player from declaring such a win. | ||
In all cases, the furiten rule requires a player to be aware of all of their [[machi|tile waits]]. Furiten applies to all waiting tiles, even that to a [[Kokushi|thirteen sided kokushi musou]]. If a player is [[tenpai]] but does not realize all of their possible waits, then the lack of awareness may lead to an illegal win. This is especially true of a player who has called [[riichi]] and end up passing on a winning tile. | In all cases, the furiten rule requires a player to be aware of all of their [[machi|tile waits]]. Furiten applies to all waiting tiles, even that to a [[Kokushi|thirteen sided kokushi musou]]. If a player is [[tenpai]] but does not realize all of their possible waits, then the lack of awareness may lead to an illegal win. This is especially true of a player who has called [[riichi]] and end up passing on a winning tile. | ||
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== Rule statement == | == Rule statement == | ||
A | A hand in tenpai is in furiten in any of the following scenarios: | ||
* | * At least one winning tile is in one's own discard pile. | ||
* | * The hand is declared [[riichi]] and a winning tile is not claimed. | ||
While in furiten, the hand is unable to call ron upon a discard. However, it is still winnable via self-draw, assuming the hand has valid yaku. | |||
=== Own discard furiten === | === Own discard furiten === | ||