Archive · Puzzle #90
Thursday, August 20, 2026
NumGrid
Mid-week NumGrid puzzles balance solve-time against deductive challenge. The Thursday, August 20, 2026 puzzle (#90) follows the standard mid-week calibration: targets that reward correct opening-guess strategy without producing the weekend-tier solve-rate drops.
Mid-month NumGrid puzzles run the standard calibration for their day of the week. Puzzle #90 is one of those — neither early-month restart material nor late-month closing material, just the representative middle-of-the-month difficulty band.
Related puzzles & strategy
See the solution and strategy for puzzle #90
Replay the previous daily puzzle
Replay the next daily puzzle
How to solve any NumGrid in fewer guesses
Use the digit sum to narrow candidates fast
Read odd/even clues to halve the search space