Interactive Academy

Master Sudoku Logic

Progress through our interactive curriculum. Learn the history, mathematics, and logic of advanced strategies and exotic variants like Killer and Thermo Sudoku.

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1
Core Curriculum

The Basics

5 Mins • Beginner

Learn the fundamental rules of Sudoku and how to find the easiest numbers using basic row and column scanning.

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2
Core Curriculum

Hidden Singles

5 Mins • Beginner

Discover how to spot "hidden singles" - cells that might look empty but are actually constrained to only one possible number.

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3
Logic Tactics

Naked Pairs

10 Mins • Intermediate

Master the powerful Naked Pairs technique to dramatically reduce candidates and slice through intermediate puzzles.

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4
Exotic Variants

Thermo Sudoku

15 Mins • Advanced

Enter the world of exotic variants! Learn Thermo Sudoku, where numbers must strictly increase along thermometer shapes.

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5
Exotic Variants

Killer Sudoku

20 Mins • Expert

The ultimate math and logic hybrid. Learn how to solve Killer cages using the "Rule of 45" and basic combinatorics.

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6
Exotic Variants

Arrow Sudoku

20 Mins • Expert

Master Arrow Sudoku, where the sum of numbers along an arrow line must equal the number in the attached bulb circle.

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