This is a work by third-year students in the 2025 class.

Creator: Akira Hiratsuka

This app's unique feature is its ability to examine tile efficiency under different tile configurations (such as "only Man tiles" or "only Character tiles," which are not possible in standard mahjong).
The "Tenhou Simulator" allows you to experience how difficult it is to achieve a "Tenhou," a winning hand in which the dealer's hand is already complete at the time of the dealer's deal.
The "Tile Efficiency Practice Problem" allows you to study tile efficiency by choosing the tile with the highest number of accepted tiles from a randomly arranged hand of 14 tiles, with the number of tiles advancing.