Standalone experimental calculator
See how WSA ranks change
Calculate actual simplified WSA point changes and test your exact rating-band, rank-band and game-counter rules. Apply results to a temporary simulation of two players, one game at a time.
1 · Match setup
Two players, one result
2 · Match calculation
Projected result
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Choose a match result and press Calculate result.
Apply advances both simulated players one game and preserves their highest rank. No information is saved to an account or D1.
3 · Optional simulation
Simulated matches
No simulated matches applied.
Use the scenarios to inspect promotion, the exact 10-game review, the two-band demotion rule, and the 9-dan ceiling. Repeatedly apply matches to follow the system across a sequence.
Mathematics
What this page tests
Rating: WSA → converted Elo → expected score → variable K → ordinary Elo change → integer WSA. No underdog bonus.
Ranking: X = floor(R/100), X′ = floor(R′/100). If bands match, G′ = G+1, else G′ = 1.
Rank band Y′: If X′−Y = 1, use X′; else if X′−Y = −2, use previous X; else if X′ = X and G′ = 10, use X; otherwise retain Y.
9-dan cap: Official rank is capped at band 28. Numerical WSA points are not capped. Rank achievements remain unlocked after demotion.