All the Domino33 tutorials, sorted by level. Follow them in order to progress from absolute beginner to expert grids.
The goal of the game, the rules, your first reflexes, and a practice grid with its solution.
Read article →The myth that holds thousands of solvers back. What the rules really say.
Read article →Two cells, two digits, and the grid moves again. Row, column, box, double elimination and quiz.
Read article →How it differs from a naked pair, how to apply it in row, column and box, method and quiz.
Read article →The 3 possible shapes, including the one nobody sees. Method, worked example and quiz.
Read article →An undeserved reputation. The counting method that finally makes it approachable, with quiz.
Read article →One row reserves a digit, six cells of the box get cleaned. Diagram, method and quiz.
Read article →The first technique that steps outside one unit. Diagram, 4 variants, method and quiz.
Read article →Step-by-step tutorial to spot and apply an X-Wing. Illustrated example and common mistakes.
Read article →Simple, effective and unmissable. Domino33 method and quiz included.
Read article →Two bivalue cells connected by a strong link. Theory and search method, with both video tutorials.
Read article →No shape to recognise, just a count of columns. 9x9 diagram, method and quiz.
Read article →One digit added to the pivot, and the elimination rule changes. The most common mistake in elaborate techniques.
Read article →The imperfect X-Wing you dismissed. The fin does not destroy it, it shrinks it.
Read article →My answer to the most asked question, and what is really on my desk: mechanical pencil, erasable pen, blank grids and noise cancelling headphones.
Read article →Candidate, bivalue, strong link, pivot, fin: the 28 Sudoku terms defined and linked to the tutorials.
Read the glossary →Four free A4 sheets: 1 or 2 large grids for pencil marks, 4 or 6 per page.
Download →All 40 techniques in a single book, from beginner to expert, with the Sudoku Solver Pro software included.
