Free chess training tools.
chess123 builds small, focused trainers from real games. The first one is live.
◐Chess Vision Live
Follow moves from real club and master games without touching the pieces, then say where they went. Six sections: Follow the moves, Arrow sketch, Pawn structure, Board sense, Attack & defend and Explorer. Level 1 starts at one move each side, so a brand-new player can begin. Free, in 16 languages.
Open Chess Vision →Real positions
Club games rated 2000+ and master games rated 2500+, from the Lichess open database.
Every level open
Start anywhere, or take a two-minute test to find your level.
No account needed
Progress stays in your browser, and you can back it up as a code. Sign in only to sync across devices.
About chess123
chess123 is made by DS Net Labs. It builds short, focused chess training tools for players of every level, from the absolute beginner to the grandmaster. Each tool is aimed at one skill and built from real games rather than invented puzzles.
The first tool, Chess Vision, trains the skill underneath calculation: keeping the board in your head while the pieces move. Most training sites always show you the board. Chess Vision takes it away. You follow moves from real club and master games, then rebuild the position or answer questions about it. Every position comes from the Lichess open database, and every level is open from the start, from a single move each side up to long sequences.
More tools are on the way, starting with exercises on counting exchanges and spotting what is possible in a position. Suggestions and bug reports are welcome on the Contact page.