Sudoku gets easier when you solve with a repeatable scan instead of searching the whole grid at once.
Hard Sudoku
Play today’s hard Sudoku for June 18, 2026. Fewer givens and more scanning. Use notes, undo, erase, hints, and the timer without leaving the keyboard.
Use arrow keys to move, number keys to enter values, Delete to erase, N to toggle notes, U to undo, H for a hint, and Escape to clear selection.
Hard puzzle loaded.
Internet Sudoku
Daily Hard Sudoku - Hard - Puzzle daily-2026-06-18-hard-dogkqz
Hard puzzles remove more givens and ask you to track candidates across several rows, columns, and boxes.
Today's hard puzzle has 31 starting clues and one verified solution.
Choose Hard when easy singles are not enough but you still want a puzzle that rewards patient logic.
Look for hidden singles and pairs. If the board feels crowded with notes, pause and remove candidates made impossible by recent entries.
You can play the exact daily grid at /daily-sudoku/2026-06-18/hard or print a clean copy from the printable hard Sudoku page.
Use these links when you want the dated version, a paper grid, or a different way to continue.
Hard Sudoku describes the puzzle's starting clue density and solving pressure. Fewer givens and more scanning.
Choose Hard when easy singles are not enough but you still want a puzzle that rewards patient logic.
Yes. The top-level hard page follows today’s UTC daily puzzle. Use the dated daily archive when you want to replay a specific calendar day.
Yes. The printable hard Sudoku page has the same daily grid and a separate solution page.