Toitoi

Conditions

• All four melds must be triplets (three of the same tile) or quads (kan); no sequences are allowed
• The pair can be any tile
• Worth 2 han regardless of whether the hand is open or closed
• Open calls (pon) are permitted and common for building this hand
• If all four triplets happen to be concealed, the hand would also qualify for suu ankou (yakuman)

Strategy Tips

• When your hand has several pairs and few sequential connections, toitoi becomes a strong option. Calling pon aggressively on pairs you hold can build this hand quickly.
• Toitoi combines naturally with yakuhai (dragon/wind triplets) and honroutou (all terminals and honors). Look for these overlaps to increase your hand value significantly.
• Be mindful that calling pon three times makes your hand very transparent to opponents. They can often read that you are going for toitoi and may stop discarding your needed tiles. Try to keep at least one concealed triplet to maintain some ambiguity.