Parity Rush
How to Play
Use the displayed values and the parity identity to solve each missing number during a 45-second run.
Play Parity Rush →How a round works
- Select Start 45-second run to receive a balanced equation with one hidden value.
- Read C as call value, PV(K) as the present value of the strike, P as put value, and S as spot value.
- Rearrange C + PV(K) = P + S to calculate the hidden value.
- Enter the number and submit. A correct answer adds points and a streak bonus; a miss costs two seconds but lets you retry.
- Use Reveal & next if you are stuck. When time expires, review the solved count and replay.
Controls
Use the numeric field and Submit button, or press Enter. Reveal & next shows the current answer and deals another equation. All controls are touch and keyboard accessible.
Scoring
A correct equation awards 100 points plus 20 points for each current streak step, capped at a five-step bonus. A wrong submission breaks the streak and costs two seconds; revealing breaks the streak without awarding points.