WMPA / WMF

Cross-comparison

corroborated — two or more independent sources agree on the facts that define this variant

• [1] Sloperama states WMPA is Korean and BASED ON JAPANESE MODERN, which matches the chart's placement under Modern rules. Book: WORLD MAHJONG Essence, by Kingstone Kim

Reading it

136 tiles, no flowers, and the distinctive squared-faan scoring. Sloperama states independently that WMPA is Korean and based on Japanese Modern, which is exactly the placement the chart gives it, under the Japanese branch but coloured Korean.

Sources

1. Sloper, Tom. "FAQ 2b: Identifying a Mah-Jongg Variant." Sloperama. canonical checked 2026-09-18

   Tile counts, hand sizes, flower handling and scoring for roughly 50 named variants. Primary source for most leaf nodes in this chart.

   https://www.sloperama.com/mjfaq/mjfaq02b.html

   Also cited on: Chinese archaic, Chinese pre-classical, Chinese classical, Shanghai / Hong Kong new style, Hong Kong old style, Modern HKOS and 43 more · bibliography #1

2. Yuria (Hassouhatsu Club). "A Brief History of Japanese Mahjong." Krakow Chombo Club, 2 Aug 2026. supporting

   Arushiiaru rules and scoring; Amano Daizou; the Houchi Shinbun serial of 11 Nov - 5 Dec 1952; the 1957 Tokyo rules and 1967 modern rules; bazoro; the Federation's 2016 acceptance of riichi.

   https://chombo.club/en/blog/2026/08/02/a-brief-history-of-japanese-mahjong/

   Also cited on: Japanese classical / arushiiaru, Houchi rules, Tokyo rules, Modern rules, Modern riichi / yonma · bibliography #10