First find the number of han: add the number of han given by the yaku (at least one), the number of dora tiles, kan dora tiles, and in case of a riichi winning hand the number of ura dora tiles. This sum is the han value of the hand.
Then calculate the base value of the hand:
• For hands worth less than five han, count the number of minipoints (fu) and round it up to the next ten. (E.g. 32 minipoints are rounded up to 40). In case of a seven pairs hand, the hand is worth 25 minipoints and is not rounded up.
The minipoints are then doubled for each han, and doubled two more times, giving the base value of the hand. This base value is limited to 2,000 points.
A base value of 1920 points, being close to mangan, is rounded up to 2,000 points.
• For hands with five or more han, the minipoints are irrelevant. The base value is given in the following table:
|8, 9, 10||Baiman||4000|
|11 and more||Sanbaiman||6000|
• For yakuman hands, the base value is 8000.
There is no counted yakuman: a hand worth 13 or more han but not having a yakuman yaku is only rewarded sanbaiman.
Thirdly, determine how much players have to pay:
• For wins on a self-draw, the base value is paid by all three opponents.
For East, however, the value is doubled one more time. East receives double payment, but also pays twice the amount of the base value when an opponent wins by self-draw.
• For wins on a discard, the discarding player must pay for all opponents, including East, i.e. four times the base value if the winner is not East, and three times the doubled base value if the winner is East.
Payments are rounded up to the next hundred.
To the hand value are added 100 points for each continuance counter for wins on a self-draw, and 300 points for wins on a discard.
In addition, the riichi bets on the table are collected by the winner.
If a player's score goes below zero, the game continues. The player will have a negative score and plays normally (he can declare riichi, he can pay the other players, ...).