Japanese mahjong: Difference between revisions

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{{main|Kan}}
{{main|Kan}}


A special set of rules and procedures applies to [[kan]]. Aside from completing a quad from discards, a player may also have a complete meld of a quad in hand. This is a '''closed quad'''. Calling a ''kan'' is also applicable in this case, and upon doing so, a player can retain the state of a '''closed hand''', unless the hand was previously opened. ''This closed quad can only be called on the player's turn after the draw from the wall''. After the call, the player reveals proof of the quad; and then the quad is put to the side like any other called meld.
A special set of rules and procedures applies to [[kan|quads]]. When in special possession of all four tiles of a specific type, a player may invoke these rules, or otherwise, decline the option.  Like many aspects of the game, this is a risk-reward option. When choosing to invoke the "quad rules", a player may declare after the current tile draw, if four tiles or the fourth tile is in the hand. If a player possesses three tiles and a player discarded a fourth, then the player may invoke the "quad rules" on that discard.


Upon calling any ''kan'', a player gains the privilege of drawing an extra tile from the ''dead wall''. This is one of the first 4 tiles to the left of the ''dora-indicator''. Afterwards, if the the extra tile does not complete the hand, the player must discard and play moves on to the right. As a sidenote, for each call ''kan'', the player's tile count increases by 1 for each quad. Once again, a quad counts as a triplet plus one.
After the declaration for a quad, then a player gains special access to the [[dead wall]]. This is one of the first four tiles to the left of the ''dora-indicator''. Afterwards, if the the extra tile does not complete the hand, the player must discard and play moves on to the right. As a sidenote, for each call ''kan'', the player's tile count increases by one for each quad. Yet once again, a quad counts as a triplet plus one.


Furthermore, when a player calls or declares a ''kan'', an additional ''dora indicator'' tile is flipped. This is called the ''kan dora''. Some rules may allow the ''kan dora'' to be flipped immediately after the ''kan'' call. Other rules have stricter procedures on when the ''kan dora'' tile is flipped. Some make the distinction between the open ''kan'' and the closed ''kan''. Finally, a tile is shifted from the end of the regular wall to the ''dead wall'', in order to maintain 14-tiles in the ''dead wall''.
Furthermore, when a player calls or declares a ''kan'', an additional ''dora indicator'' tile is flipped. This is called the ''kandora''. Some rules may allow the ''kandora'' to be flipped immediately after the ''kan'' call. Other rules have stricter procedures on when the ''kandora'' tile is flipped. Some make the distinction between the open ''kan'' and the closed ''kan''. Finally, a tile is shifted from the end of the regular wall to the ''dead wall'', in order to maintain 14-tiles in the ''dead wall''.  Because of the additional dora, a play using quads can be very risky or rewarding.


===Claiming discards===
===Claiming discards===
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