UkeireLab

UkeireLab is a mahjong draw-forecasting tool. It helps you estimate draw space from your hand and visible discards, compare keep paths, and save simulations for review.

• Log your hand and discards to estimate single-draw and multi-turn odds
• Compare keep and discard ideas to favor steadier or faster progress
• Check remaining stock, wait shapes, and extinct risk to judge pressure and cold tiles
• Save strong sims, favorites, and plan comparisons as personal probability samples
• Learn basic draw, multi-turn, and wait-improvement concepts

For study and review only. It does not replace in-game judgment or guarantee results.