Japanese mahjong scoring rules

[citation needed] The scoring system uses structural criteria as well as bonuses.

[1] The payment to the winner of a hand is calculated as follows: In the case of a draw, points are transferred according to the nō-ten bappu rule.

In the event of a penalty, such as claiming a win with an illegal hand, then points are transferred via the chombo rule.

If a hand has five han or more, it is always counted by mangan (満貫) as a unit and it is not necessary to calculate fu (符) or basic points.

The yaku are "self-pick" (menzenchin-tsumo-hō) and "honor tiles" (yakuhai), and they yield a total of two han.

The method of calculating a winning hand's score in mahjong is quite tedious.

Expert and professional players have this table memorized and can thus tell the value of a hand at a glance.

To use the table, simply look up the values that correspond to the han and fu counts of the hand.

The top numbers in each cell indicate the payout from a player who discards a winning tile.

The numbers in brackets indicate the payout for each player in the event the winning tile is self-drawn.

A 6 or 7 han hand is considered haneman (跳満, or hane-mangan 跳満貫) and the basic points are 3,000.

If a hand with rīchi declaration is nōten, a chombo penalty is imposed.

Players receive or pay points called nō-ten bappu (ノー聴罰符; fu of penalty for nōten) in the following way when a hand ends in an exhaustive draw: In most rules when a dealer's hand is nōten, the dealer changes and the game wind may change.

But if it's the last hand of the last round, in some rules, a game does not end if the dealer declares nōten.

Honba (本場) is a unit of continuous dealer wins and draws, and to be exact, hon (本) is a unit of numbers of some bars and so on, and ba (場) means a scene or a situation.

On the other hand, the number of honba always increases when a draw or a dealer's win occurs.

If the dealer changes, it is called rinchan (輪荘) instead of renchan, and happens for example by their nōten in the case of a draw.

Example: Optionally, a rule may restriction of ryanhan-shibari (二飜縛り; literally "two-han binding").

Here, players must produce hands of two han or more from yaku when the honba count surpasses a certain number.

Under the rule of chombo (チョンボ, 錯和 or 冲和), a player is given an infraction.

If other players happen to win the hand, then the infractions are not revealed and therefore made null and void.

Other settings for chombo apply point penalties after the game's conclusion.

The calculation for each player is as follows: Point settings may vary but are always determined prior to the beginning of a game.

In the optional rule wareme (割れ目, ワレメ; fissure, split), the player in front of whom the wall was split to indicate the end of the dead wall, acquires and pays double the normal points.

[6] It is often especially called oya-ware (親割れ; parent's wareme) when the player is the dealer.