Hi all, thank you for checking this website !
This article describe at which situation you can try Dai-Minkan.
Before going to the main topic, let me share my Yakuman at Sanma: 3 people Mahjong. I sometimes play Sanma for warming up, and still 3 dan.
18 han with 12 Dora ! Please break this record xD
Btw, I was 4th at South 3 and got nice hand. Dai-Minkan or not ?
Dai-Minkan here ! because 1. I had confidence in this wait and felt I had large probability to win this round 2. with 1 Kan Dora, this hand will be 8,000 from 3900 3. Even without Kan Dora, it will be 5,200. 4. 2 players except me already called and no fear of Kan Ura Dora for them. Please note reason 1. is most important. And I drew South wind. Kan ?
Of course I did with same reason! Soon after that, I won this hand.
Again, if you are confident in your wait, and have 3,900 or 2,600 hand whose value will be gained drastically with 1 Dora, Dai-Minkan will be a considerable option.
I hope this will be of some help to you!