All Simples

Mahjong Variant	Value
Chinese Classical	Never
New Style	Common
Japanese Classical	Always
HK Old Style	Never
Guangdong Style	Always
Taiwanese	Never
Chinese Official MCR	2 "Fan"
Guangdong MCR	1 Point
Japanese Riichi	1, Varies
Let's Mahjong!	1 Fan
Zung Jung	5 Points

All Simples (斷么九) is a pattern composed only of numbers 2 through 8. There are no terminals or honors.

An example of All Simples. The blue tile is waiting on the 6 Dot or 9 Dot, however, the hand can only score All Simples on the 6 Dot.

By Mahjong Variant

Japanese Riichi

It was once popular to require All Simples to be concealed (Kuitan Nashi). Now most rulesets allow open All Simples (Kuitan Ari).