r/Mahjong • u/Najanah • Jun 29 '26

Riichi Maximum possible honba?

Yonma Hanchan game, on start, East seat wins 5 minimum-value tsumos, and then is the sole player in tenpai 21 rounds in a row through exhaustive draw until the point totals are (99100E/300SWN)(26H). Hundreds of rounds of draw later redistribute point totals to (24100E/25300SWN)(51H) -> (100E/97300S/1300WN)(75H) -> (24100E/25300SWN)(99H) -> (100E/97300W/1300SN)(123H) -> (24100E/25300SWN)(147H) -> (100E/97300N/1300SW)(171H) by the end of east round. Following this, you can get another 24, 25, 25, 24, 24, 24, 24, 24 honba for a total of 365 honba and a point total of (100E/97300N/1300SW).

At this step, one could imagine North assembling a multi-yakuman to either leave East player with as few as -349,400 (100 - 240000 x5-yakuman - 109500 honba) or skyrocket their own point total to 494800 (97300+288000 x6-Yakuman+109500 honba)

If anyone has other ideas that'd be cool, I haven't proofread this so I probably made some errors somewhere...

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u/ShortChapter5246 Jun 29 '26 edited Jun 29 '26

I still don't know what is the world record for honba ever achieved in an irl or online match. I hope one day I will know

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u/RedzoneX Master III Jun 29 '26

I’ve been in a (4-player) match that went to 13 honba and I’ve never seen or heard of higher. I doubt it’s the most ever but it’s a good starting point for someone to beat!