6.1 Riichi

Once you reach tenpai, you can declare riichi.

Riichi is a declaration that you are in tenpai. You can declare it only while menzen. Reaching agari after riichi raises your score.

Toimen has declared riichi. The riichi marker is lit on toimen’s nameplate.

The tile discarded with a riichi declaration is placed sideways, unlike other discards. This tile is called the declaration tile.