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-**WORK IN PROGESS**
+'''Probability''' in mahjong is a concept that can be applied to many different situations. Because unlike chess, go or shogi, mahjong is an incomplete-information game.  Players are required to predict outcomes and chances of reaching [[tenpai]], improving their [[Shanten|hand state]] (lowering tenpai or raising [[uke-ire]] (the useful tile count)), and completing their hand.  At the same time, players try to project and [[Defense|guess opponent waiting tiles]]. Naturally, some of these are difficult concepts to describe with mathematical models, due to various [[Situational mahjong|game situations]].
-'''Probability''' in mahjong is a concept that can be applied to many different situations. Because unlike chess, go or shogi, playing mahjong is an incomplete-information game, requiring players to predict outcomes and chances of completing their hand, reaching tenpai, improving their hand state (lowering tenpai or raising uke-ire (the useful tile count)), as well as attempting to project what an opponent can be waiting on. Naturally, some of these are difficult concepts to describe with mathematical models.
 == Basic concepts and variables ==
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 === Chance of winning (raw chance, at tenpai stage) ===
-W = 1 - (notS * notR); note that raw chance will give numbers whose total can easily exceed a total probability of 1. This is to be expected.
+W = 1 - (notS * notR); note that raw chance will give numbers whose 4-player total can easily exceed a total probability of 1. This is to be expected.
 === Chance of not having a win declared in one full turn ===