Sudoku — 15 Puzzle Types

FIFTEEN SUDOKU VARIANTS IN ONE APP Classic, Killer, Jigsaw, 16x16 and eleven more — free sudoku puzzles generated on your iPhone. 15 different Sudoku Puzzle variants: • Classic sudoku — 9x9, rows, columns and 3x3 boxes • Micro 4x4 and Mini 6x6 — easy sudoku for absolute beginners • Hexadoku 16x16 (super sudoku) — symbols 1 to 9, then A to G • Jigsaw sudoku (irregular, squiggly) — nine colored regions take the place of the 3x3 boxes • Diagonal (Sudoku X) — both long diagonals hold 1-9 too • Windoku (hyper sudoku, window sudoku) — four extra shaded 3x3 windows • Killer sudoku — dashed cages add up to a target, no repeat in a cage • Sandwich — the outside clue sums the digits between the 1 and the 9 • Arrow — the circled digit is the sum along its arrow • Thermo — digits rise from the bulb of a thermometer to its tip • Kropki — a white dot means neighbors differ by 1, black means double • Even-Odd — shaded cells take even digits, the rest odd • Wordoku (letter sudoku) — the letters A to I, not numbers • Color — nine colors, no numbers at all EVERY SUDOKU PUZZLE HAS EXACTLY ONE SOLUTION Not only the classic ones. Before a board is drawn, the app proves it has a single answer — on Jigsaw, on Killer, on the 16x16, on all fifteen variants. No dead ends, never a puzzle that cannot be finished. 15 SUDOKU VARIATIONS, 5 DIFFICULTY LEVELS Five difficulty levels, with sudoku challenges for every skill level and board size. Play classic 9x9 sudoku, or switch to smaller 4x4 and 6x6 boards for a quick game. Each difficulty track keeps your progress separate, so you improve at your own pace. EASY, MEDIUM, HARD, EXPERT AND MASTER SUDOKU Every track goes on for as long as you keep playing. The ladder is real on every board size: on the 16x16, an easy board opens with 143 filled cells and a master one with about a hundred. Killer works differently on purpose — its difficulty comes from cage size rather than extra numbers, so a hard Killer stays a true Killer. Master is the one lock: 20 Expert puzzles from the difficulty tracks open it for every variant at once (Daily Challenges don't count). DAILY SUDOKU CHALLENGE One sudoku puzzle a day, worked out from the date on your iPhone, so everyone gets the same board on the same date. It rotates through fourteen of the fifteen variants and the weekday sets the difficulty, so Monday is gentle and the weekend bites. Solve a puzzle every day — the Daily or any other — and your streak grows; miss a day without solving anything and it simply starts over. NOTES, HINTS AND UNDO • Get one free hint per puzzle. • Add notes and see matching numbers highlighted as you play. • When you place a number, conflicting notes are automatically removed. • Notes that a number already on the board rules out can't be entered. • Each puzzle starts with 3 hearts, and every wrong number costs one. Run out and the board locks: watch a rewarded ad for one more heart when one is available (Sudoku Pro adds it without an ad), or start the puzzle over. A CLEAN SUDOKU EXPERIENCE • No account, no sign-in. Pick a difficulty and you are already playing — no level map to scroll first. • A correct entry is final: once a cell holds the right answer, it cannot be overwritten, erased, or undone. • The clock stops when you leave and starts again at the same second. Every variant keeps its own game, saved as you go. • No stars, no score, no XP, nobody to beat. The finish screen shows two results: your time and your mistakes. • Every statistic comes from your own solves and losses, down to a win rate that counts losses. No progress bar either — puzzles are generated on your iPhone rather than shipped in a pack, so there is no last level. Sudoku Pro is a single payment, not a subscription. It removes the ads and lifts the hint limit. The free version is the whole game with ads in it, and every variant is open from the start.