Arithmetic you know, in a puzzle you have not played before
Every CornerWISE board is filled with numbers. Instead of solving a written equation, you inspect the corners of a rectangle and connect two diagonal numbers when their sum, difference, product or exact quotient appears in one of the other corners.
Each matching operation scores one point. The same connection can satisfy more than one operation, so noticing the full relationship matters as much as drawing the line.
A number puzzle that grows with you
Normal mode keeps the search close by using neighboring corners. Expert mode opens the whole grid and lets valid connections span rectangles of any size.
Choose a board from 3 × 3 to 7 × 7, adjust the number range and play against a clock, without a clock, or in 10s+ mode where correct lines earn more time.
Free on Android and iPhone
CornerWISE is free to play with ads and does not require an account. Progress, local leaderboards and saved results remain on your device unless you choose to share or export them.