The Shikaku for September 15, 2026 — a size up from Monday, still on the friendly side.
Tuesday brings a 7×7 easy: more rectangles to place than Monday's warm-up, but every one of them still forced if you look in the right corner. Watch for the prime clues — on a seven-wide board they're nearly placed for you.
Feeling fluent? The medium tier is the natural next step. The how-to-play guide covers the techniques these boards teach.