A coach that studies you. Not the average player.
Play chess, explore moves, practice tactics, and improve your game. No email, no subscriptions, and no paywalls.
Your game and progress stay in this browser.
♟ Play at your pace
Play against a computer opponent with legal moves and adjustable strength.
♜ Learn with feedback
Explore the position, see legal moves, and review a move-by-move game history.
♞ Train for free
Practice openings, import PGNs, and learn the fundamentals without an account.
Chess Puzzles
Solve unique, real-game tactics from the free Lichess open puzzle collection. New positions load as you advance; already-seen puzzles never repeat automatically.
Openings Training
Control the center, develop efficiently, castle, and learn practical opening plans.
Guided board lessons
Open the interactive lesson library and choose a topic. Use Next and Back to follow the examples.
Apply what you learned
Middlegame Training
Practice tactics, candidate moves, king safety, and piece activity.
Guided board lessons
Open the interactive lesson library and choose a topic. Use Next and Back to follow the examples.
Apply what you learned
Endgame Training
Learn king activity, passed pawns, opposition, and checkmate patterns.
Guided board lessons
Open the interactive lesson library and choose a topic. Use Next and Back to follow the examples.
Apply what you learned
Play & Coach
Play as White against a computer opponent. Click a piece, then its destination square.
Game controls
Loading chess engine…
Move history
White moves first.
Move feedback · both players
Instant classifications are approximate training feedback, not Stockfish-certified Chess.com accuracy. ELO settings approximate difficulty, not calibrated ratings.
Coach notes
Develop your pieces, control the center, and keep your king safe.
Game Analysis
Paste a PGN from one of your games to replay its moves on the board. This is a local game viewer, not a cloud AI evaluation.
Import PGN
The Dojo
Interactive lessons: select a topic, then play through the moves on a real board.
Guided lessons
Highlighted squares show the move. Lessons are original practice content, not Square One’s private course database.
Opening principles
Control central squares, develop knights and bishops, and castle to protect your king.
Tactical awareness
Look for checks, captures, and threats before choosing a move.
Endgame basics
Activate your king, create passed pawns, and calculate pawn races.
Your Progress
Game counts saved locally on this device.
Games started
0
Moves played
0
Privacy
No email address or account data is collected.
Learn the Basics
How pieces move
Rooks move straight, bishops diagonally, queens both, knights in L-shapes, and kings one square. Pawns move forward and capture diagonally.
How to win
Checkmate means the opposing king is threatened and has no legal escape.
Good habits
Before moving, check your opponent's threats, loose pieces, and possible tactics.
Your 30-Day Chess Academy
30 days of focused training. A realistic goal is to improve your decisions and consistency; a specific rating gain is not guaranteed. All lessons and progress are free and stored in this browser.
Daily routine · 45–60 min
10 min tactics · 15 min lesson · 15–25 min slow game · 10 min review. On busy days, do the 20-minute minimum: tactics, one concept, and review.
Your progress
0 / 30
Complete the first day to begin.
How to improve fastest
Play longer games, ask “What is my opponent threatening?” before every move, and study your biggest mistake after each game. Review missed puzzles instead of guessing repeatedly.
30-day checklist
Opening → Middlegame → Endgame
Start with the Italian Game or London System as White; learn how to respond to 1.e4 and 1.d4 as Black. Understand plans rather than memorizing long lines. In middlegames, work on piece activity, king safety, pawn structure, and tactical calculation. In endgames, practice king activity, opposition, pawn promotion, and basic mates.