Sudoku Number Puzzle Challenge

Finish more Sudoku with less frustration. Keep your streak, resume exactly where you left off, and get clear help when you stall instead of vague hints.

FEATURES

Play a fresh 9×9 Sudoku with a unique solution every time.
Choose Easy, Medium, Hard, Expert, or Master in the New Puzzle sheet.
Use Notes for pencil marks, then watch candidates clear as the board changes.
Long-press Notes to fill candidates across the board with Pro.
Switch the number pad between a strip and a 3×3 grid layout.
Catch mistakes right away with Auto-check, or turn it off in Settings.
Track errors with the mistake counter and undo moves when you need to.
Pause a puzzle and come back to the same board, timer, notes, and hints.
Open the lightbulb for Coach Mode and read a two-sentence explanation of the next logical move.
Tap Show me the cell to jump to the right square while still placing the digit yourself.
Play today’s daily Sudoku, build a streak, and review the last 7 days.
See your weak spots in the fluency map for techniques like Naked Single, Hidden Single, Naked Pair, Pointing Pair, and Hidden Pair.
Start a warm-up from the weak-spot card to practice at the right difficulty.
Add widgets to see today’s daily, your streak, and a quick Play or Review action.
Resume unfinished games from the Lock Screen or Live Activity.
Share a finished board as an image.

PERFECT FOR

Commuters who want a daily Sudoku that works offline and saves progress mid-puzzle.
Players who get stuck on a Hard puzzle and want the lightbulb coach to explain the technique, not just reveal an answer.
Streak builders who want Today, best streak, grace days, and a solved badge they can trust.
People who like checking a Home Screen widget, Lock Screen widget, or StandBy view before starting the day.
Couch solvers who want clear board highlighting, Undo, Redo, Erase, and a number pad that never covers the grid.

WHY Sudoku Number Challenge

Sudoku Number Challenge helps Sudoku players solve daily and free-play puzzles with clearer guidance and dependable progress saving. Every puzzle is generated fresh, the daily challenge is consistent for that date, and your board, streak, history, and fluency progress can stay in sync through your private account storage when available. Coach Mode works on your phone, so your board state, mistake history, and pencil marks stay on your device.

PAID FEATURES

Pro adds unlimited coach hints, premium themes, auto-fill candidates, and an ad-free Daily and Coach experience. Free play includes all five difficulties, daily Sudoku, notes, streaks, stats, offline play, widgets, Live Activity, and 5 coach hints per day. Notifications are optional and only used for daily reminders and trial-ending reminders if you turn them on.

Start today’s Sudoku, keep your streak going, and get better with every puzzle.

Terms of Use (EULA) - http://www.apple.com/legal/itunes/appstore/dev/stdeula