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World Riichi Rules 2014

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21/05/2014
Revision 1.04
Sylvain Malbec

This rule book is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
https://creativecommons.org/licenses/by-nc-sa/4.0/

1Preface

A World Riichi Rule cannot be called to be a "world-wide rule" if not based on competition rules used by major organizations around the world. To achieve that, the rule-sets of the following organizations have been considered while writing the WRR:
• European Mahjong Association (EMA)
• 101１０１競技規定
• Japan Professional Mahjong League (JPML)日本プロ麻雀連盟
• Korean Mahjong League (KML)
• Mu Mahjongμ! 麻将連合
• Nihon Pro Mahjong (NPM)日本プロ麻雀協会公
• Real Mahjong Unit (RMU)
• Saikouisen戦日本プロ麻雀協会
• United States Professional Mahjong League (USPML)

Nine organizations, totalling thirteen rule-sets and variants.
Most English-language authors use the terms "chii" and "pon" irrespectively if the group is melded or concealed. This is confusing, since in Japanese language those terms refer only to the action of calling a tile for melding. For groups, the Japanese terms "shuntsu", "kōtsu" and "kantsu" will be used to avoid any ambiguity.

Sylvain Malbec
30 December 2013
Revision 1.04 - 21 May 2014