About game
Hard Sudoku is classic 9×9 sudoku for players who got bored with easy long ago. Nine levels, from Very easy to Legend, where logic runs out and guessing begins.
Nine variations: squiggly blocks instead of 3×3 squares, X diagonals, shaded Hyper and Percent areas, color groups — on their own and combined with squiggly blocks. Each has seven levels and its own statistics.
57,000 puzzles: 25,500 classic and 31,500 in variations. Each has exactly one solution — uniqueness is verified in advance.
A hint does more than open a cell: it highlights the cells, names the technique and explains why the move is right. A repeated digit lights up at once, and a grid check finds the mistakes no repeat reveals.
Notes, undo and redo, three input schemes, light and dark themes, sound, Russian and English. A tutorial, achievements for day streaks, puzzles solved and games without help.
Games and statistics live in the cloud. Leaderboards: solved puzzles, day streaks and best time per level.
How to play
Fill the 9×9 grid so that the digits 1 to 9 never repeat in a row, a column or a 3×3 block. The given digits cannot be changed. — A variation is picked with the switches on the level screen. Squiggly blocks are outlined with a thick line. In X digits also never repeat along the diagonals, in Hyper within the four shaded squares, in Percent within the two squares and along the diagonal, in Colors among cells of one color. — The tutorial offers an input scheme — Digit first, Cell first or Automatic — and Settings change it later. — Entering the same digit again erases it, the eraser clears a cell. — Notes put candidates into a cell, a written digit erases the same notes around it. Undo and Redo step moves back and forward. — For a watched ad: Hint explains the next move (up to three per game), Check the grid compares it with the solution, Auto notes fill in candidates. — The icon in the status line restarts the puzzle. — Keyboard: digits, arrows, Backspace.Game info
Age rating
6+
Platforms
Authorization support
Yes
Localization
Russian, English
Screen orientation
Release date
Cloud saves
No
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