Renchan: Difference between revisions

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 Some rulesets may have different renchan rules depending on whether it is East round or South round. In these rules, renchans are usually harder in East round, and easier in the South round.
-If [[multiple ron]] is enabled, there may be a variation to the rule that the dealer always get a renchan after winning the hand. Under some rulesets, if a multiple ron occurs and the dealer is one of the winners, a renchan occurs in a multiple ron only if the dealer is the first player in turn order after the player who dealt in, similar to how [[atamahane]] awards the win only to the first player in turn order.
+=== All last ===
+Outside of [[all last]], renchan is usually mandatory when possible.
-If [[nagashi mangan]] is used, then its interaction with renchan depends on how it is scored. Under some rulesets, nagashi mangan is scored as a winning hand, in which case renchan occurs if the dealer was the player to complete it. Under other rulesets, nagashi mangan is treated as a replacement for the usual points exchange at an exhaustive draw, in which case the renchan occurs based on the usual rules for an exhaustive draw. This may allow the dealer to complete and score nagashi mangan but, because they are not [[tenpai]], to lose the deal.
+During all last, there are a few main variations:
+* A 1st-place dealer must end the game once they win in all last. Non-1st place dealers must renchan if they win. This is the rule used in most online clients.
+* A dealer must start a new renchan if they win in all last, even if in 1st place.
+* A dealer, regardless of place, can choose to end the round once they win in all last.
+=== What qualifies as winning ===
+If [[multiple ron]] is enabled:
+* Some rules only allow renchan if the dealer is the first player in turn order after the player who dealt in (similar to how [[atamahane]] works).
+* Some rules allow the dealer to renchan so long as they win, regardless of seat order.
+If [[nagashi mangan]] is used:
+* If nagashi mangan is treated as a win, then the dealer renchans when scoring nagashi mangan.
+* If nagashi mangan is treated as a point exchange, then the dealer renchans as if nagashi mangan did not exist. This means if the dealer scores nagashi mangan but is not tenpai, no renchan occurs. If a non-dealer scores nagashi mangan, but the dealer is tenpai, a renchan does occur (assuming tenpai renchan is used).
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