specifically this game all last: https://tenhou.net/4/?log=2024032110gm-000b-18940-696e60c7&tw=0&ts=8
what happened was kind of complex but
- 25m wait. 5 gives tanyao sanshoku (enough to overtake 1st) while 2 gives tanyao nomi (not enough)
- tsumogiri 2m, now you're in furiten
- someone calls riichi, adding 1000 to the pot
- tsumo on 2m for tanyao nomi, but the 1000 makes it enough to overtake 1st
basically that should be a skill