Your chess tactics trainer!

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Train chess tactics

1 2 chess! is a tactics trainer built by chess lovers for chess lovers.

Improve your chess

1 2 chess! will prepare you for real-life matches. With a huge database of chess puzzles and an intuitive interface, it's the perfect tool for beginners and experts alike.

Anonymous user data

Keep your tactics ELO rating solving tactics suitable to your current level. We store only an anonymous device id, your privacy is guaranteed.

Tactics from real games

All the tactics are from real tournament games played in recent years. You can browse the games and search games with the same positions in the database.

New tactics every week

1 2 chess! tactics database grows constantly adding tactics from games played the last week. The games source is Mark Crowther's

Mobile friendly

1 2 chess! is a cutting-edge web app and it works on almost any mobile device. Select "Add to Home screen" from your mobile browser to place it in your home screen as a normal app.


1 2 chess! tweets as @onetwochess one chess tactic every hour.


1 2 chess! posts as one chess tactic every hour.