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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}}, meaning '''sacred discard''', is a particular rule associated with the tile discards. Basically, the player in [[Tenpai|tenpai]] is furiten if winning tiles are present in one's own discard pile or, in certain conditions, another player's discard pile or [[shouminkan]]. Players in furiten may still win by [[tsumo]], but not by [[ron]]. | '''Furiten''' {{kana|振聴}}, meaning '''sacred discard''', is a particular rule associated with the tile discards. Basically, the player in [[Tenpai|tenpai]] is furiten if winning tiles are present in one's own discard pile or, in certain conditions, another player's discard pile or [[shouminkan]]. Players in furiten may still win by [[tsumo]], but not by [[ron]]. A call of ron while furiten is penalized by [[chombo]]. | ||
In all cases, the furiten rule requires a player to be aware of all of their [[machi|tile waits]]. If a player is [[tenpai]] but does not realize all of their possible waits, they may not be aware that they are furiten and, as a result, call an illegal win. This is especially true of a player who has called [[riichi]], because they can be furiten off of anyone's discard. | |||
Unlike many other mahjong variations, the [[discard pile]] for Japanese mahjong is specifically arranged in front of players. The orderly discards help enforce the '''furiten rule''', by keeping track of discarded tiles. [[naki|Tile calls]] have specific arrangements to point the source of these discarded tiles, so that they do not allow a loophole to furiten. For every discard, the '''furiten rule''' applies when appropriate. | Unlike many other mahjong variations, the [[discard pile]] for Japanese mahjong is specifically arranged in front of players. The orderly discards help enforce the '''furiten rule''', by keeping track of discarded tiles. [[naki|Tile calls]] have specific arrangements to point the source of these discarded tiles, so that they do not allow a loophole to furiten. For every discard, the '''furiten rule''' applies when appropriate. | ||
== The rule == | == The rule == | ||
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{{main|Riichi}} | {{main|Riichi}} | ||
A riichi declarer may ignore a winning tile and not call ron. The ignored tile may have been a discarded tile or a [[Chankan|tile used to extend a minkou to a shominkan]]. After ignoring a winning tile, the riichi declarer is permanently furiten for the rest of the hand. Therefore, it is advised for any player declaring riichi to call ron, at the first instance of a winning tile. Otherwise, a win via [[mentsumo|tsumo]] becomes the only option. | A riichi declarer may ignore a winning tile and not call ron. The ignored tile may have been a discarded tile or a [[Chankan|tile used to extend a minkou to a shominkan]] (kan called while having an open triplet). After ignoring a winning tile, the riichi declarer is permanently furiten for the rest of the hand. Therefore, it is advised for any player declaring riichi to call ron, at the first instance of a winning tile. Otherwise, a win via [[mentsumo|tsumo]] becomes the only option. | ||
The furiten rule emphasizes that all tiles discarded by any player after the riichi declaration are deemed [[genbutsu|safe tiles]], along with the player's own discards. For this reason, the tile upon the riichi declaration is turned sideways to indicate the timing of the call. Riichi declarers may not decline a ron against one player and expect to declare ron against another. Even if a winning tile different from the ignored one appears, the player may not call ron. | The furiten rule emphasizes that all tiles discarded by any player after the riichi declaration are deemed [[genbutsu|safe tiles]], along with the player's own discards. For this reason, the tile upon the riichi declaration is turned sideways to indicate the timing of the call. Riichi declarers may not decline a ron against one player and expect to declare ron against another. Even if a winning tile different from the ignored one appears, the player may not call ron. | ||
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Any player in tenpai has the option to ignore winning tiles. By declining a call for ron, the player then becomes temporarily furiten until their next discard. In some plays, this may be a valid option in order to achieve a higher scoring hand or to target a specific player. | Any player in tenpai has the option to ignore winning tiles. By declining a call for ron, the player then becomes temporarily furiten until their next discard. In some plays, this may be a valid option in order to achieve a higher scoring hand or to target a specific player. | ||
The furiten rule does not consider [[yaku]]. Sometimes, a hand can be completed with several tiles, but only some of them provide a yaku, others would produce a yakuless hand. If a yakuless tile appears, it must be ignored, because a winning hand must contain a yaku. The player must remain temporarily furiten until | The furiten rule does not consider [[yaku]]. Sometimes, a hand can be completed with several tiles, but only some of them provide a yaku, others would produce a yakuless hand. If a yakuless tile appears, it must be ignored, because a winning hand must contain a yaku. The player must remain temporarily furiten until the next turn, even if a potential winning tile appears. | ||
This rule makes it harder to target a specific player with ron, or to ignore a winning tile of [[yasume|lesser value]] and hope for a more valuable tile. Sometimes, a player simply needs a specific win condition in order to attain a certain result, like [[Gyakuten|passing another player]]. Win conditions that do not meet certain expectations may end up being ignored.ile giving more value | This rule makes it harder to target a specific player with ron, or to ignore a winning tile of [[yasume|lesser value]] and hope for a more valuable tile. Sometimes, a player simply needs a specific win condition in order to attain a certain result, like [[Gyakuten|passing another player]]. Win conditions that do not meet certain expectations may end up being ignored.ile giving more value | ||
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===Working with furiten=== | ===Working with furiten=== | ||
Sometimes, it may be necessary to deliberately place the hand in furiten. Often, this is the result of developing the hand and defending simultaneously. To escape the bind applied by furiten, then the hand's [[machi|tile wait(s)]] must simply change by adjusting and changing the tiles in the hand with subsequent tile draws. | Sometimes, it may be necessary to deliberately place the hand in furiten. Often, this is the result of developing the hand and defending simultaneously. To escape the bind applied by furiten, then the hand's [[machi|tile wait(s)]] must simply change by adjusting and changing the tiles in the hand with subsequent tile draws. Of course, a player may place greater expectation on tsumo to win rather than ron. | ||
=== Furiten tsumo === | === Furiten tsumo === | ||