Sudoku XL: 16x16 Puzzles

Sudoku the way you actually want it — including the giant 16x16 boards almost no other app offers. WHAT MAKES IT DIFFERENT • 16x16 grids. Four times the board, the same pure logic. • Every puzzle is solvable by logic alone. No guessing, ever. Each one is verified against a technique solver before it ships — if a human can't reason it out, it doesn't go in. • Print them. Export to PDF in A4 or US Letter, 1, 2 or 4 puzzles per sheet, with an optional answer key at the back. SIX DIFFICULTIES, HONESTLY LABELLED Easy, Medium, Hard, Expert, Extreme and Master. The tier is the hardest technique the puzzle genuinely requires — not a guess based on how many numbers are missing. MORE THAN ONE WAY TO PLAY • A 158-level journey that ramps from singles to XY-Wing • A new Daily Challenge every day, with streaks • Killer Sudoku, with cages and sums • X-Sudoku, where both diagonals count too • A solver for the puzzle in your newspaper • Game Center leaderboards for the daily challenge, points, streaks and 16x16 solves, plus 20 achievements LEARN THE TECHNIQUES — FREE Every lesson is free, with worked diagrams: naked and hidden singles, locked candidates, pairs, triples, X-Wing and XY-Wing. Each one teaches exactly what the next difficulty demands. BUILT FOR REAL PLAYING • Works completely offline. No account, ever. • Pencil marks, undo and redo, auto-check you can switch off • Letters instead of numbers on big grids, so every symbol is one character • Light and dark themes, seven languages SUBSCRIPTIONS Sudoku XL is free to play: every mode, difficulty and board size is open from the start. Optional subscriptions add extras: • Basic — $3.49/month or $34.99/year: premium themes and 250 coins every week • Pro — $6.99/month or $69.99/year: premium themes and 500 coins every week, plus no ads anywhere, the Coach, and printable PDF packs Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sudokuxl.netlify.app/privacy