Kuitan – ari – open tanyao is allowed.
Aka – nashi – no red fives are used.
Kuikae – ari – switching chi is allowed, but you can not discard the same tile you’ve opened on
Atodzuke – ari
Double yakumans – nashi – no double yakumans.
Pao – ari – the player who discarded the tile in the last set of daisangen/daisushi/suukantsu is responsible for the whole payment, if the yakuman was made by tsumo, and for the half of the payment, if the yakuman was made by ron.
Challenge Cup winner.
Prizes from sponsors.