Solving techniques explained in detail, what's new on the site, and tips to help you improve — whether you're just starting out on Kids Sudoku 4×4 or already deep into the Evil puzzles.
The Sudoku-Land blog
How to Solve an Evil Sudoku?
Even at Evil level, 95% of digits fall to a simple single. The method for finding the chains that open each lock, on a real example.
Read the article →Solving a 4×4 Sudoku: One Rule Is Enough
Every 4×4 sudoku can be solved with a single rule and no guessing — checked on all 13.6 million possible puzzles. Plus how to explain it to a child.
Read the article →Solving a 6×6 Sudoku: What 2×3 Blocks Change
The rectangular blocks of a 6×6 already move the classic-sudoku reflexes — a gentler first contact than the 8×8 with the row/column imbalance.
Read the article →Solving an 8×8 Sudoku: What 2×4 Blocks Change
The rectangular blocks of an 8×8 move every classic-sudoku reflex: you scan by rows, and a deduction that is impossible in a 9×9 becomes the main engine.
Read the article →Install Sudoku-Land: the complete guide
How to install the site as an app on mobile and on PC, and what works (or doesn't) once you're offline.
Read the article →How to Solve a Sudoku: The Complete Method
Every technique on the site, level by level, with a summary table and the order to search them in on a real puzzle.
Read the article →How to Teach a Child Sudoku: Where to Start
What age to start, which grid size to pick, what to do when they get stuck, and when to move up a level.
Read the article →The X-Wing in sudoku, explained simply
A step-by-step explanation of this Expert-level technique, with a clear worked example, so you can spot it faster in your own puzzles.
Read the article →Sudoku-Land Turns 20: From Flash to Today
A domain registered in 2005, a game built in Flash, and a full rewrite in 2026 — with the technical choices behind it.
Read the article →