The first five yaku: riichi, tsumo, tanyao, yakuhai and pinfu

Value tiles (yakuhai)

A triplet of any dragon is a yaku worth 1 han, open or closed: yakuhai. Self-draw with a closed hand (menzen tsumo) is another 1 han.

You draw and win. Which yaku does the hand have?

Tsumo

A triplet of your seat wind or of the round wind is also yakuhai. In an East-only game the round wind is always East.

You sit South in the East round and win by ron. Which yaku?

Ron from across Seat South Round East

Tanyao (all simples): only tiles 2 to 8. Pinfu: a closed hand of four sequences, a pair that isn't a value tile, and a two-sided wait. 1 han each.

You win by ron on . Tap every yaku this hand has.

Ron from across

The same shape with a closed wait like is not pinfu. With terminals in the hand and no riichi, nothing is left.

Closed hand, no riichi, and is discarded. Can you win?

Ron from across

Riichi, self-draw and pinfu need a closed hand. All simples and value triplets also work after calling.

You called chii on , and is discarded. Can you win?

Ron from right