Mahjong Reversal Calculator

In Mahjong, it is important to get the top or higher rank.
In order to do so, it is necessary to have an accurate grasp of the current situation and win hands to fulfill the conditions for taking those positions on it.
This application helps you reverse your rivals by calculating their conditions.

How to use this application

Select a dealer.
Enter your score.
Enter your rival's score.
The possible range for entering these scores is -199,900 to +199,900.
Enter the number of riichi bets.
Enter the number of counters.
Every time these items are changed, the table below shows the "Score required for reversal" by way of winning.
If you click "Status after winning" in the table below, "Your score after winning", "Rival's score after winning", and "Difference" will be displayed.
To initialize the item values, click the "Reset All" button.