Riichi Mahjong Calculator

Riichi Mahjong Calculator, supporting features such as hand

efficiency, meld hand efficiency, winning hand analysis,

and score calculation for fan and minipoints.

- Hand Efficiency: Includes tile efficiency, good-shape tile

efficiency (for one-shanten only), and backwards strategy.

- Meld Hand Efficiency: Tile efficiency for chow, pung, kong,

and pass; includes good-shape tile efficiency (for one-shanten only)

and backwards strategy.

- Winning Hand Analysis: Defaults to Mahjong Soul/Tenhou rules,

with customizable rules to some extent.

- Score Calculation By Fan and Minipoints: Defaults to Mahjong Soul/Tenhou

rules, with customizable rules to some extent.