ConceptAnother player throws your winning tile.
Win on discard means another player discards the exact tile you need to complete your hand. During the call window, you call Win and reveal your hand.
The discarder is the player who dealt in. The hand still needs to be a legal shape and meet the minimum fan requirement.
Rule in plain EnglishCall during the window.
Win on discard means another player throws the tile that completes your hand.
TakeawayWin on discard means another player throws the tile that completes your hand.
Completing shape is not enough if the ruleset requires a score 3 fan; we will discuss scoring in upcoming lessons.