Do I answer types or a count?

Select every tile that lowers shanten, and do not enter how many copies remain. The copy count is what one-shanten discard grades. It is not this question.

When is the answer correct?

Your set has to match the answer exactly. Missing one type or adding one fails. Practice then shows every ukeire tile.

Why do some tiles count?

A tile you already hold four of never counts, and any other tile counts when drawing it lowers shanten. Seven-tile hands add east and south triplets, and ten-tile hands add an east triplet, so a tile can count even when it looks idle. If seven pairs is closer, the pair tile counts too.

What is different about 7, 10, and 13 tiles?

All three are one-shanten, and you still select every ukeire type. Thirteen tiles are not padded. Seven and ten tiles use the honor triplets above so the shanten is scored on a full hand.

How does this relate to one-shanten discard?

This page asks which tiles lower shanten. Which single cut leaves the most of those tiles is one-shanten discard. Both start from one-shanten, and they ask different questions.

One-Shanten Training

Tiles Count

After you start, copy the challenge link from Share above to have a friend answer this hand. How it works is on Friend Challenge.

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Score

Countdown

What this drill trains

One-shanten training asks for every ukeire type, not the copies left. The hand is one suit at one-shanten. A tile counts if you hold fewer than four and it lowers shanten. Seven tiles add east and south triplets; ten tiles add an east triplet. Thirteen tiles are not padded.

How to practice

Choose 7, 10, or 13 tiles, then start. There is no Simple or Hard setting. The suit changes each hand.
Select every improving tile, or toggle with 1–9, then submit. The set must match exactly. Practice moves on only on a full match.
Timed mode is 20 seconds, about ten points per second left. One miss ends the round and shows the tiles.

How to read the answer

The answer lists types, not copies left. Copies are four minus what you hold. Types versus counts are explained in Counting ukeire

FAQ

Want another drill?

Return to the training hub for every mode, the learning path, and short guides.

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Daily Challenge

Five tenpai + five discard puzzles—same set worldwide today.

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Related guides

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