Kan Fouls

These fouls pertain directly to Kan. There are a number of cases in which it is illegal to Kan after a Reach. Like the Reach fouls, the Kan fouls are only enforced if the player reveals his hand after going out, or if the player is forced to reveal his hand when the hand ends in a null hand.


1. Changing Wait Kan

If a player has Reached on the following hand:



And later draws the last

He may not Kan this tile. If he Kans the the hand will change to:



Which will change the Wait from to only.

This rule disallows such Kan that change the tiles composing the Wait.


2. Changing Wait Formation Kan

If a player has Reached on the following hand:



And later draws the last

He may not Kan this tile. If he Kans the the hand will change to:



The Wait remains the same even after the Kan: .

However, the Edge Wait that was possible before the Kan (Waiting on only to complete the Edge Wait: ) is no longer possible. This rule disallows Kans that eliminate previously possible Wait Formations.


3. Changing Meld Formation Kan

If a player has Reached on the following hand:



And later draws the last (or alternatively, the or the )

He may not Kan this tile. If he Kans the the hand will change to:



The Wait remains the same even after the Kan (a Single Wait on ). Also, there are no changes in the composition of the Wait.

However, before the Kan this portion of the hand could be formed into different kinds of melds:



It could be taken as

+ +


OR as

+ +


In this way, by making the 1 Number Set into a Quad, the possibility of forming Runs in this section has been eliminated. Now these melds can only be taken as 3 sets.

This rule disallows players from committing Kan after a Reach if it eliminates potential Melds.


4. Kan After Drawing Non-Kan Tile

If a player has Reached on the following hand:



And later draws

He may not Kan this tile. Even after declaring this Kan, the Hand remains a legal configuration, and the Wait does not change in any way. However, you are only allowed to declare a Kan after a reach when you draw the tile that completes the Kan.



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