Tile efficiency
Count what helps you
The tiles that would bring your hand closer to tenpai, and how many copies are left, are its ukeire. A good discard keeps as many as possible, and favours shapes that can still become a two-sided wait.
Tap every tile that would bring this hand closer to tenpai.
Lone honors go first, while you need a block
A hand is five blocks: four sets and a pair. While one is missing, a lone honor can only
become a pair, a lone can still join
, a lone
even more. Cut lone honors,
then 1s and 9s, then 2s and 8s.
You drew . Which discard keeps the most useful tiles?
Five blocks? Keep the honor
Once you have five blocks, a loose number tile has nothing left to build. A loose honor is no better, but it is a tile you can throw safely later, when someone declares riichi. Cut the number tile first.
You drew , and your hand has five blocks. Which loose tile goes?
Closed beats edge
Closed
and edge
both wait on 4 tiles. But a
or
turns
into a two-sided shape, while
can only ever wait on
. With one shape too
many, cut the edge.
You drew : six blocks, one too many. What goes?
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