Jolo (Jojo's 'log)


A clever way to memorize the riichi mahjong score table (in three short numerical series)

Credit to @ldbeth

Who in turn references Riichi Wiki: Score Table Memorization.

The entire table of 4 fan 110 fu can be accurately memorized/recomputed using only three series:

3-5-10-(20-39-77), 15-29-58-116, 4-7-13-26-52

fu 1 han 2 han 3 han 4 han
30 fu 300/500 500/1000 1000/2000 2000/3900
1000 2000 3900 7700
1500 2900 5800 11600
40 fu 400/700 700/1300 1300/2600 Mangan
1300 2600 5200 -
2000 3900 7700