Examples
Examples
Try the starting example
- Supplied validated han
- 3
- Supplied validated rounded fu
- 40
- Winner is dealer East yes/no
- no
- Win method ron or tsumo
- ron
- Honba continuance counters
- 2
- Existing riichi deposits awarded from table pool
- 1
- Explicit independent yakuman-yaku count, zero for han/fu scoring
- 0
- WRC 2025 base points
- 1280
- Applied WRC scoring limit
- Below mangan
- Payer breakdown including honba
- Discarder: 5800
- Total points from current hand payers
- 5800
- Riichi deposits from existing table pool
- 1000
- Total winner receipt including existing deposits
- 6800
Try another scenario
- Supplied validated han
- 3
- Supplied validated rounded fu
- 40
- Winner is dealer East yes/no
- yes
- Win method ron or tsumo
- ron
- Honba continuance counters
- 2
- Existing riichi deposits awarded from table pool
- 1
- Explicit independent yakuman-yaku count, zero for han/fu scoring
- 0
- WRC 2025 base points
- 1280
- Applied WRC scoring limit
- Below mangan
- Payer breakdown including honba
- Discarder: 8300
- Total points from current hand payers
- 8300
- Riichi deposits from existing table pool
- 1000
- Total winner receipt including existing deposits
- 9300
Calculation method
Calculation method
WRC 2025 base points
Use fu×2^(han+2) below limits; WRC 2025 rounds base≥1920 to mangan. Limits: 5 han 2000, 6–7 3000, 8–10 4000, 11–12 6000, 13+ 8000; explicit yakuman-yaku count×8000.
Applied WRC scoring limit
Name the chosen WRC 2025 limit; actual han/fu/yaku validity is supplied externally.
Payer breakdown including honba
Ron: ceil-to-100 base×4 non-East or ×6 East, plus 300/honba. Tsumo: each non-East pays ceil-to-100 base, East pays twice base; East winner receives twice base from each, plus 100/honba per payer.
Total points from current hand payers
Sum hand payer charges; deposited riichi sticks are separate.
Riichi deposits from existing table pool
Existing table-pool deposits×1000; do not charge these again to current hand payers.
Total winner receipt including existing deposits
Hand payments+existing table deposits.
Symbols and units
- a
- Supplied validated han
- b
- Supplied validated rounded fu
- c
- Winner is dealer East yes/no
- d
- Win method ron or tsumo
- e
- Honba continuance counters
- f
- Existing riichi deposits awarded from table pool
- g
- Explicit independent yakuman-yaku count, zero for han/fu scoring
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- WRC Rules 2025 payment arithmetic, including kiriage mangan and counted 13+ han at yonbaiman. The hand’s han, fu and yakuman validity must already be established; unsupported low-value tuples are rejected. Liability payments, multiple winners, optional rules and hand/yaku recognition are excluded.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
World Riichi Championship: WRC Rules 2025 and official scoring table, including mangan rounding ↗
Background reading; this does not imply endorsement or independent review of SumFizz.