Equation

01 / Goal & rules

1. Find the exact hidden equation in six guesses using the displayed character count. Operators and = each occupy one cell.
2. Green means exact character and position; yellow means present elsewhere; gray means no remaining copy. Duplicate feedback respects the actual count.
3. Multiplication and division take precedence. Invalid or false equations use no attempt. Matching a result alone is not enough: the entire target must match.

02 / Controls & guided practice

1. Enter digits and operators using the keypad or keyboard, then submit. Backspace deletes a character.
2. Easy uses 5–6 characters, normal 7–8 and hard 8–9. Check the length shown for this puzzle.

Choose Learn by doing above to try coached moves on a real practice board. Your current game is preserved; tutorial results are never recorded.

03 / How scoring works

1. A win scores max(0, 1,000,000 − (guesses−1)×130,000 − hints×200,000). A loss scores 0.

Time is informational and is not part of this score formula. Scores are derived from game state; different games use different scales.

04 / A thought for your next move

1. Narrow down the position of = and the operator first.
2. A gray digit may still have a green copy elsewhere. Track multiplicities.