Sudoku Paper Chill

A complete 9x9 sudoku, built in portrait for mobile, with a hand drawn paper and pencil look. Every event sheet is commented and ready to reskin. What is included:

• Four difficulties, EASY to EXPERT, each with its own number of starting clues.
• A generator that always produces a grid with a single solution: no unfair puzzle.
• Touch controls: tap a cell to highlight its row, column and 3x3 block, or drag a key from the numpad.
• NOTES mode for pencil candidates, UNDO history, ERASE, and a VERIFY button showing the mistakes left.
• HINT revealing a cell, limited per game or unlimited in relax mode.
• RELAX MODE: no mistake limit, no game over, unlimited hints.
• Mistake counter, timer, win and lose screens with time and difficulty.
• Tooltips on every button, desktop hover and mobile long press.
• Fits any screen, with a seamless paper background that never stretches.

The sudoku logic lives in its own extension: change the look without touching the rules.