The game of Bulls and Cows
Discover free online Bulls and Cows, the legendary number-puzzle that has tested the mental agility of millions of people worldwide since the late 19th century. Internationally known as “Bulls and Cows” and immortalised in 1970 with the Mastermind board, today we bring it to your browser so you can enjoy endless rounds with no downloads, no invasive ads and all the advantages of a modern platform: statistics, global leaderboards and real-time multiplayer modes. Be part of history and challenge your mind now with Bulls and Cows!
What is Bulls and Cows?
Unique features
Pure logic
No luck, just deductive reasoning and strategic analysis
Difficulty levels
Choose between beginner, intermediate, advanced or expert
Unlimited rounds
Play as many times as you want, with no daily limits
Strategy
Sharpen your logical thinking and improve your deduction pattern each round
How to start
Play now
Click "Play now" to start an instant match. It's the fastest way to dive into the challenge!
Learn the rules
If you're new, visit "How to play" to master the rules and discover winning strategies.
Compete
Join the community to save your progress, compete in tournaments and unlock exclusive achievements.
Bulls and Cows is a game of pure logic where your goal is to crack a secret number
Bulls and Cows is a game of pure logic where your goal is to crack a secret number. Every guess gives you two essential clues: “bulls” (correct digit in the exact position) and “cows” (correct digit in the wrong position). With no luck involved, everything depends on your deductive reasoning and your ability to rule out possibilities.
All game features
See why our platform is the best way to <strong>play Bulls and Cows online</strong>: powerful AI, global leaderboards, advanced stats and an active community. fijas y picas online.
Modern functionalities
Explore the open-source code, step-by-step tutorials and join a community that evolves the game with constant updates, new weekly challenges and global tournaments.
Timeline
Victorian origins
The game appears in newspapers and British intellectual clubs as a mathematical deduction challenge.
The Mastermind revolution
Inventor Mordechai Meirowitz adapts the concept with coloured pegs and launches it globally, becoming a bestseller.
Bulls and Cows online
The web version keeps the logical core while adding leaderboards, stats and real-time challenges for players worldwide.
A lasting legacy
From Victorian newspapers to your smartphone, Bulls and Cows has kept its promise: pure deduction without relying on luck.
Each era added a layer: the English gave the numeric base, Mastermind brought visual aesthetics and this platform delivers the global digital experience 24/7.