Learn Notakto
Whether you’re learning the rules for the first time, curious why the boards are secretly a game of Nim, or interested in how changing three rules of tic-tac-toe creates real depth, you’ll find guides on how to play, why it works, and where the game came from.
Play Notakto →THE GAME
The Game
Rules, strategy, and what makes Notakto tick. Start here if you’re new.
- What Is Notakto? Start here
X only, two or three boards, and the rule that makes a draw impossible.
- How to Win at Notakto
Think in live versus dead boards, count parity, and control the last board.
- Notakto vs Tic-Tac-Toe
Three small rule changes turn a solved draw into a game worth playing.
THE MATH
The Math
Why the boards are secretly Nim, and what it means that Notakto is solved.
- Is Notakto Solved?
Yes for the 3×3 game, an order-18 misère quotient, with the 4×4 still open.
- Notakto Is Secretly Nim
Why copying your opponent loses here, and the 18 values that decide the game instead.
- Misère Games On Triad ↗
On Triad: the game-theory family where completing the pattern loses, and it names Notakto.
DESIGN & HISTORY
Design & History
Where Notakto came from, and what minimal rules reveal about game design.
- The History of Notakto
Koca and a five-year-old, a MathOverflow thread, and the 2013 solution.
- Elegance in Game Design On Triad ↗
On Triad: what the simplest games teach about depth from minimal rules.
- Why Simple Games Are Often Harder On Triad ↗
On Triad: why constraint, not complication, makes the hardest decisions.