Official Japan Professional Mahjong League rules are now supported!
Thank you for using Janreco.
Janreco now supports the official rules of the Japan Professional Mahjong League!
What are the official league rules?
These are the rules used in the Japan Professional Mahjong League's official matches.
Their defining feature is float-based rank points: uma changes automatically according to final scores. Unlike fixed uma (such as 30-10), rank points depend on how many players finish at or above the return score.
In Janreco, tap the “JPML official rules” template on the rule creation screen to fill in the settings automatically.
Float-based rank point table
| Players above the return score | 1st | 2nd | 3rd | 4th |
|---|---|---|---|---|
| 1 | +12 | -1 | -3 | -8 |
| 2 | +8 | +4 | -4 | -8 |
| 3 | +8 | +3 | +1 | -12 |
A player is “above” when their final score is at least the 30,000-point return score.
How to use it
Step 1: Choose the “JPML official rules” template
Tap the template on the rule creation screen to fill in its settings.
Step 2: Check the settings
The template fills in these values. Review and adjust them if needed.
- Starting score → 30,000
- Return score → 30,000
- Rank point mode → Float-based
- Decimal calculation → Keep decimals
- Rank for tied scores → Split rank points
Step 3: Record a game
Record the game as usual. After you enter scores, rank points are applied automatically based on the number of players above the return score.
Please note
- Four-player mahjong only. This template is unavailable for three-player mahjong.
Availability
- Available to all users
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