Suukantsu: Difference between revisions

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[[Image:Hadakabind.png|thumb|250px|right|Suukantsu tenpai with an [http://tenhou.net/0/?log=2014031007gm-0009-7447-xfcc2dd624f0d&tw=3 inescapable hadaka tanki situation].]]
[[Image:Hadakabind.png|thumb|250px|right|Suukantsu tenpai with an [http://tenhou.net/0/?log=2014031007gm-0009-7447-xfcc2dd624f0d&tw=3 inescapable hadaka tanki situation].]]


This yakuman requires four kan calls. As a result, the hand in [[tenpai]] always has a [[Tanki|hadaka tanki]] wait. In order to call a single kan, a player must draw at least 3 out of 4 of a single tile type under any of these three scenarios:
This yakuman requires four kan calls. As a result, the hand in [[tenpai]] always has a [[Tanki|hadaka tanki]] wait. In order to call each kan, a player must draw at least 3 out of 4 tiles of a single tile type:
* A player has a pair and calls pon, then draws the fourth to [[shouminkan|call kan]].
* A player has a pair and calls pon, then draws the fourth to [[shouminkan|call kan]].
* A player has a closed triplet and [[daiminkan|calls kan]] on a discarded fourth.
* A player has a closed triplet and [[daiminkan|calls kan]] on a discarded fourth.
* A player draws all four of a tile type and [[ankan|calls kan]].
* A player draws all four of a tile type and [[ankan|calls kan]].


For this yakuman, a player must repeat any of those kan calls four times. This yakuman is the most difficult yakuman to attain tenpai, let alone score.  
Since suukantsu requires a player to draw into four closed triplets, any hand that scores suukantsu would also have met the requirements for the significantly easier [[suuankou]]. Since they are both worth the same value, there are very few reasons to go for suukantsu.
*You must obtain a total of 4/4 tiles of four different types. If any tile is rendered unavailable (e.g. in an opponents hand, in the dead wall), the hand is practically impossible.
 
*You must obtain 3/4 of those tiles by self draw. That feat is already worth a yakuman, that being [[suuankou]]. A hand that could be suuankou is unlikely to call an open kan, because it's much easier to win with suuankou.
Reasons why suukantsu is so difficult:
*If any other player has called kan, the hand becomes impossible. If playing with abortive draws, this will trigger [[suukaikan]]. If playing without, then players are still only allowed a combined total of 4 kans in one game.
*You must obtain a total of 4/4 tiles of four different types, where 3/4 are self drawn.
*If any other player has called kan, the hand becomes impossible. If playing with abortive draws, this will trigger [[suukaikan]]. If playing without, then players are still only allowed a combined total of 4 kans in one game, preventing the yakuman.
*Calling four kans adds a total of four kan dora, which will greatly boost the value of others' hands. A player may not want to kan even once in order to avoid the extra dora.
*Calling four kans adds a total of four kan dora, which will greatly boost the value of others' hands. A player may not want to kan even once in order to avoid the extra dora.
*Open & added kans are the easiest type of kan, but they require you to open your hand. Since there is no [[yaku]] for a kan until the third kan, committing to an open kan is risky.
*Calling four kans immediately reveals you have a yakuman hand, so players are likely to defend.
*Calling four kans immediately reveals you have a yakuman hand, so players are likely to defend.
*The hand always has a hadaka tanki wait. In addition to being difficult to win off, it leaves you with no room to defend.
*The hand always has a hadaka tanki wait.


Finally, like any other yakuman, another player could have a faster hand and win before you.
Finally, like any other yakuman, another player could have a faster hand and win before you.
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