Training Modes - Tenpai · Discard · Shanten · Yaku

Fixed daily tenpai and discard set with a day leaderboard

Five tenpai and five discard puzzles each UTC day—compare accuracy and time on the global day board. Great for a daily habit.

Play today's challenge

Calculate the number of steps away from a complete hand

Read shanten from a 13-tile hand, including standard, seven pairs, and kokushi. Build the feel for how far you are from tenpai.

Train shanten counting

Improve tenpai recognition speed and accuracy

Name waits from tenpai shapes, from basic waits to multi-sided tenpai. Core entry to tile-efficiency training.

Mahjong tenpai training

Practice identifying one-away hand patterns

List every effective tile on one-shanten hands—train tile counts and wide vs narrow ukeire.

Practice one-shanten ukeire

Train tile discarding decisions to maximize efficiency

Pick the best discard from 14 tiles by comparing shanten and ukeire after each cut—close to real discard decisions.

Start discard training

Train optimal discarding in one-away situations

At one-shanten, choose the discard that keeps the widest ukeire among lines that do not worsen shanten.

One-shanten discard drills

Practice identifying hand-inherent yaku

Check every hand-inherent yaku on completed hands—from basics through composites and yakuman.

Practice yaku recognition

Practice fu, han, and payment from yaku names and seat context

Enter fu, han, and ron/tsumo payments from yaku and table context; full scoring breakdown after each answer.

Practice score calculation

Share interesting puzzles with friends and challenge each other

Share interesting hands from analysis or training and challenge friends on the same puzzle.

Challenge a friend