Puzzles
Interactive solve Chess and Connect 4 positions, track your tries, and earn puzzle leaderboard points.
Tournament
Tournament
Today
Daily Updates
A new puzzle every day and a monthly challenge. Sign in to keep your results and climb the leaderboard.
Train with puzzles
Pick any puzzle and play it on the board.
Chess puzzlesConnect 4 puzzles
Choose your challenge
Pick a game and start playing
Every game is easy to reach, easy to start, and built to keep the action moving. Jump in for a quick match, challenge a friend, or sharpen your strategy against our AI.
Classic strategy
Chess
Think ahead, control the board, and challenge either a friend or our AI in the world's most iconic strategy game.
Block & race
Walls
Race your pawn to the opposite side of the board while spending walls to slow your opponent. Every wall must be placed wisely, paths must stay open, and walls are limited.
Board control
Checkers
Play American or International checkers on the same board. Choose a local game on one screen, take on our AI, or challenge a friend online with a shared code.
Fast tactics
Connect 4
Simple to start and hard to put down. Line up four before your opponent does in a fast-paced battle of timing, traps, and smart positioning.
Dice strategy
Backgammon
Roll the dice, build points, hit exposed checkers, and race to bear off first in a classic mix of probability and sharp board tactics.
Original game
Sartaba Dominion
An original Sartaba Mind Games creation. Command units on a hex board, hold supply lines, capture objectives, and besiege the enemy Nexus in this unique tactical strategy game.
Learn
Get better, not just luckier.
Clear rules, real strategy and honest answers for every game we host.
Chess rules
The board, how each piece moves, castling, en passant and how games end.
Chess strategy
Openings, tactics and endgames, written for players who want to improve.
Questions, answered
Short answers to the questions players ask most.
Every game has its own guide
Chess is only the start. Connect 4, Checkers, Backgammon, Dominion and Walls each have rules, strategy and FAQ pages too.
Make it yours
Your table, your colors.
Five site themes and six chess board styles. Your choice is remembered on every visit, and saved to your profile when you are signed in.
The other games have board colors too. Set them in your profile or from the Theme menu on each game page.
Quick answers
Good to know before you play.
Is it free?
Yes. Every game, the daily puzzle and the tournaments are free to play. An account is free too.
Do I need an account?
No. You can play any game against the AI or a friend without signing up. An account saves your points, rank, badges, streaks and settings, and lets you solve the puzzle of the day and enter tournaments.
How do the AI levels work?
There are five levels. Level 1 is relaxed and makes mistakes like a beginner. Level 5 searches much deeper and is hard to beat. Levels 4 and 5 need a free account with a verified email. Level 0 is for two people on the same screen.
How do I play a friend?
Press Play a Friend in a game, create a game and send the six digit code to your friend. They type the code, press Join and the game starts.
What do points and badges do?
Every game and puzzle earns rating points that raise your rank, from Rookie up to Legend. Badges mark milestones such as first wins, streaks and tournament finishes. Your rank and badges are on your profile.