Glossary
Ikkitsuukan (Pure Straight) - The 1-2-3-4-5-6-7-8-9 Yaku
Learn about Ikkitsuukan in mahjong - a 2-han yaku requiring 123, 456, and 789 sequences in one suit. Understand calling rules and strategy.
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Learn about Ikkitsuukan in mahjong - a 2-han yaku requiring 123, 456, and 789 sequences in one suit. Understand calling rules and strategy.
Learn about Iipeikou in mahjong - a 1-han closed-only yaku requiring two identical sequences. Understand how to spot it and its relation to Ryanpeikou.