Daily Sudoku for October 4, 2026

The daily sudoku challenge for Sunday, October 4, 2026 — a free hard 9×9 puzzle with a verified unique solution. Sunday finishes the week with the hardest puzzle — settle in with full pencil marks and patience.

Everyone who played on this date solved the same puzzle, generated deterministically from the date itself. Your progress on this page saves automatically in your browser.

Other Recent Daily Puzzles

• Sunday, September 27 — hard
• Monday, September 28 — easy
• Tuesday, September 29 — easy
• Wednesday, September 30 — medium
• Thursday, October 1 — medium
• Friday, October 2 — medium
• Saturday, October 3 — hard
• Monday, October 5 — easy
• Tuesday, October 6 — easy
• Wednesday, October 7 — medium
• Thursday, October 8 — medium
• Friday, October 9 — medium
• Saturday, October 10 — hard

Looking for today's grid? Play the current daily sudoku challenge, or generate unlimited puzzles on play sudoku online. New to the game? Start with the rules of sudoku.