Chombo: Difference between revisions

268 bytes added ,  24 July 2020
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Another application of chombo penalizes the player post-game. After the end score calculation with [[oka]] and [[uma]], a point penalty is applied. This format is relevant in [[Mahjong tournaments|tournament]] formats, where accumulated points play a role to overall standings.  The deducted points is at the discretion of the tournament organizer.
Another application of chombo penalizes the player post-game. After the end score calculation with [[oka]] and [[uma]], a point penalty is applied. This format is relevant in [[Mahjong tournaments|tournament]] formats, where accumulated points play a role to overall standings.  The deducted points is at the discretion of the tournament organizer.


== Cheating ==
== Infraction cases ==
A number of instances can place a player under chombo.  All of these can be noted as "improper play" and a disregard of the game rules.  Often, the penalties are accidental, but intentional penalized plays are also to be noted.
 
=== Cheating ===


Cheating is very possible in the game.  In fact, some players can execute various and elaborate cheating tricks.  Some tricks involve "wall rigging" by deliberately placing tiles along certain positions on the wall.  Other tricks involving tile switching from any part of the wall or even from the discard pile.  Many of tricks involve the ''sleight of hand''.  The most skilled cheaters have the ability to perform these tricks with minimal detection, if any.
Cheating is very possible in the game.  In fact, some players can execute various and elaborate cheating tricks.  Some tricks involve "wall rigging" by deliberately placing tiles along certain positions on the wall.  Other tricks involving tile switching from any part of the wall or even from the discard pile.  Many of tricks involve the ''sleight of hand''.  The most skilled cheaters have the ability to perform these tricks with minimal detection, if any.
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Tournament judges might decide on an even more severe punishment than chombo or disqualify the cheater.
Tournament judges might decide on an even more severe punishment than chombo or disqualify the cheater.


== Invalid win ==
=== Invalid win ===


Players cannot declare a win with an incomplete hand or on an incorrect waiting tile.  The following conditions are deemed as invalid win:
Players cannot declare a win with an incomplete hand or on an incorrect waiting tile.  The following conditions are deemed as invalid win:
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* Declaring a win with a noten hand is definitely subject to chombo.
* Declaring a win with a noten hand is definitely subject to chombo.


== Invalid call ==
=== Invalid call ===


Making an invalid call may be subjected to chombo. Showing the incorrect tiles for a certain call can be easily corrected if the player can still make a meld with that call, but if a call was made and the resulting meld is illegal, then chombo applies.
Making an invalid call may be subjected to chombo. Showing the incorrect tiles for a certain call can be easily corrected if the player can still make a meld with that call, but if a call was made and the resulting meld is illegal, then chombo applies.
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* Shimocha drops {{#mjt:5s}} and player calls ''pon'', then shows {{#mjt:45s}}: Chombo is applied.
* Shimocha drops {{#mjt:5s}} and player calls ''pon'', then shows {{#mjt:45s}}: Chombo is applied.


== Noten riichi ==
=== Noten riichi ===


Riichi may only be declared with a [[tenpai]] hand. Declaring riichi with a noten hand is not detected by the other players immediately. It goes unpunished if another player wins the hand or on an [[abortive draw]]. The noten riichi is punished with chombo if the player declares a win, or when the hand must be revealed at [[ryuukyoku]].
Riichi may only be declared with a [[tenpai]] hand. Declaring riichi with a noten hand is not detected by the other players immediately. It goes unpunished if another player wins the hand or on an [[abortive draw]]. The noten riichi is punished with chombo if the player declares a win, or when the hand must be revealed at [[ryuukyoku]].


== Unrevealed riichi ==
=== Unrevealed riichi ===


If the hand ends in [[ryuukyoku]], riichi declarers must show their hands as proof of being in tenpai. Depending on the specific rules, a player may refuse to show the hand and instead take the penalty, even when tenpai.
If the hand ends in [[ryuukyoku]], riichi declarers must show their hands as proof of being in tenpai. Depending on the specific rules, a player may refuse to show the hand and instead take the penalty, even when tenpai.


== Invalid ankan ==
=== Invalid ankan ===
{{main|Kan#Kan during riichi}}
{{main|Kan#Kan during riichi}}


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* {{#mjt:2p}} If this tile is drawn, then it is unacceptable to call kan.  In fact, it is much better to simply call [[mentsumo|tsumo]] and win the hand.
* {{#mjt:2p}} If this tile is drawn, then it is unacceptable to call kan.  In fact, it is much better to simply call [[mentsumo|tsumo]] and win the hand.


== Calling with a dead hand ==
=== Calling with a dead hand ===
{{main|Dead hand}}
{{main|Dead hand}}
A player with a dead hand is forbidden to make any type of call, such as chii, pon, kan, riichi, tsumo, or ron.
A player with a dead hand is forbidden to make any type of call, such as chii, pon, kan, riichi, tsumo, or ron.


== Wall destruction ==
=== Wall destruction ===


A player may not crash and destroy the wall, such that the tile arrangement cannot be recovered.  This is by far one of the worst penalties, as the act ruins the game completely.  It is worse, when done intentionally.  The intentional act of destroying the wall may be considered to be extremely rude and renders an otherwise enjoyable game into a confrontational one.  Here, a player may not just incur a penalty but also be ejected.
A player may not crash and destroy the wall, such that the tile arrangement cannot be recovered.  This is by far one of the worst penalties, as the act ruins the game completely.  It is worse, when done intentionally.  The intentional act of destroying the wall may be considered to be extremely rude and renders an otherwise enjoyable game into a confrontational one.  Here, a player may not just incur a penalty but also be ejected.
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