New to mahjong?

Learn mahjong

Rule guides, rankings, and tips with sample hands. Open any example in the hand generator or storyboard editor.

Reference guides and rules live here — jump to the editor or pattern library anytime.

Answer three quick questions and get a personalized reading list.

Pick a ruleset

Each ruleset has its own rules, rankings, and tile art.

Pick the variant you are learning — rules, rankings, and examples match that set.

Modern Japanese riichi — reach, yaku, and scoring basics.

Chinese Official (MCR) — fan patterns and tournament rules.

Hong Kong traditional — fast rounds and limit hands.

American NMJL — year card patterns and Charleston.

Full rule guides by ruleset.

Yaku and scoring patterns explained.

Comparisons and common pitfalls.

Terms with example hands.

Check if an American hand matches a pattern.

Test pattern recognition.

Four major variants on Mahjong Hand — use this table to pick a learning path, then open Rules or Start for deeper guides.