Connect Four thatmakes you better.
Every match gets analyzed move-by-move. The Coach calls out blunders, spots missed wins, and explains the threats you let through — so the next game, you win.
Free forever. Upgrade for deeper analysis and custom boards.
Every move gets a label — Best, Inaccuracy, Blunder — with a plain-English reason. No more guessing what went wrong.
Three AI opponents
From a friendly tutor to a ruthless master that looks 8 moves ahead and punishes every mistake. Pick your level.
Online with a link
Send a URL to a friend, play in real time. Reconnect after a refresh, no account needed for casual games.
Ratings & history
ELO ratings, match history, replays. Watch how your play improves week over week.
Hints when you're stuck
One-tap suggestion of the engine's top move. Use it to learn, not to win.
Daily puzzle
A fresh tactical position every day. Spot the winning move, keep your streak alive, sharpen your eye.
Your personal grandmaster.
Free already makes you a strong player. Pro makes you the one others fear.
- 3-level engine — looks up to 6 moves ahead
- Vs AI & online play via link
- AI Coach — every move analyzed
- Opening books
- Custom board themes
- Grandmaster-level analysis — 13 moves ahead (6 on free)
- Opening book — first 8 plies pre-computed
- Unlimited match history & replays
- Custom board themes (5 styles)
- Coach annotations in Claude-quality prose