Classic Games
CKSTEM Chess Arena
Learn real chess — free. 2,983 guided puzzles across 47 tactical skills, an 8-level bot (Pip the Pawnling → the unbeatable Titan Prime), and live class arenas where nobody sits out. The goal isn’t just to play — it’s to learn, for free, with no login. Built for classrooms, open to everyone.
100% free · no login · built for classrooms
Learn real chess — for free.
Your whole class, from first checkmate to tournament tactics. Play a friend, train with thousands of guided puzzles, challenge a bot at exactly your level, and compete in live arenas — all in the browser, no account needed.
Five ways to play and learn
Pass & Play
Two players, one device — the board flips so each side sees their own pieces.
Play the Bot
8 levels, from Pip the Pawnling to the unbeatable Titan Prime. Beginners can actually win.
The Academy
The heart of it — learn the tactics & checkmates masters use, with guided hints and progress tracking.
Host a Live Arena
Run a class tournament on the projector. Continuous pairing means nobody ever sits out.
Join on any device
Students join with a short code on any laptop, tablet or phone.
The CKSTEM Chess Academy
It's a chess school, not just a game.
Master the tactics and checkmates strong players use — by discovering them, not memorizing theory. Every puzzle is a real position, verified by the engine.
Free for your school
Bring it to your classroom
We set up a class for you and send the codes. Students join with a code + a gamer name — no student emails, no passwords. You get a private dashboard with every student's progress, plus live tournaments.
- Private teacher dashboard — puzzles solved, lessons & skills per student
- Class join code & a shareable join link — no student accounts
- Progress saves & follows each student across devices
- Live class arenas with a continuous-pairing ladder
Free forever. No ads, no accounts — just chess.
