1
edit
Kan: Difference between revisions
Jump to navigation
Jump to search
Added "closed kan on riichi" rule clarification and example 5.
(Added "closed kan on riichi" rule clarification and example 5.) |
|||
| Line 110: | Line 110: | ||
* Under most professional rulesets, a player is not allowed to call kan if it would change any possible interpretation of the hand. If, for any winning tile, any of the three identical tiles can be interpreted as part of a [[shuntsu|sequence]] or part of the pair, the kan is not allowed. By proxy, the hands winning tiles cannot change. | * Under most professional rulesets, a player is not allowed to call kan if it would change any possible interpretation of the hand. If, for any winning tile, any of the three identical tiles can be interpreted as part of a [[shuntsu|sequence]] or part of the pair, the kan is not allowed. By proxy, the hands winning tiles cannot change. | ||
* Under some rulesets, such as in [[tenhou.net]] and [[Mahjong Soul]], an alternative is used: so long as a kan does not change the hand's possible winning tiles, the kan is allowed. (I.e., changing the hand interpretation is allowed, so long as the waits remain the same.) | * Under some rulesets, such as in [[tenhou.net]] and [[Mahjong Soul]], an alternative is used: so long as a kan does not change the hand's possible winning tiles, the kan is allowed. (I.e., changing the hand interpretation is allowed, so long as the waits remain the same.) Nonetheless kan with 4 tiles from your hand (and with embedding drawn tile in the rest of your hand) is prohibited. (See Example 5) | ||
If a player does declare a kan illegally during riichi, and they call [[ron]] or the game goes to an [[ryuukyoku|exhaustive draw]], then they will be penalized with a [[chombo]] penalty for breaking the rule. If a player is not required to reveal their hand, or if another player wins, they will normally not be penalized. | If a player does declare a kan illegally during riichi, and they call [[ron]] or the game goes to an [[ryuukyoku|exhaustive draw]], then they will be penalized with a [[chombo]] penalty for breaking the rule. If a player is not required to reveal their hand, or if another player wins, they will normally not be penalized. | ||
| Line 143: | Line 143: | ||
:{{#mjt:222p}} {{#mjt:333p}} {{#mjt:444p}} or {{#mjt:234p}} {{#mjt:234p}} {{#mjt:234p}} | :{{#mjt:222p}} {{#mjt:333p}} {{#mjt:444p}} or {{#mjt:234p}} {{#mjt:234p}} {{#mjt:234p}} | ||
In this case, a kan call on any of the pinzus would leave only the three triplets interpretation possible. Thus, any of these kan could be deemed illegal after riichi (depending on ruleset). | In this case, a kan call on any of the pinzus would leave only the three triplets interpretation possible. Thus, any of these kan could be deemed illegal after riichi (depending on ruleset). | ||
'''Example 5:''' | |||
:{{#mjt:123555567p3488s}} Illegal kan: {{#mjt:5p}} | |||
Here kan {{#mjt:0z55p0z}} when you draw {{#mjt:8p}} doesn't change waits and preserves tempai. However it is prohibited even in [[tenhou.net]]/[[Mahjong Soul]] rulesets. | |||
===Last tile=== | ===Last tile=== | ||