chesse98 – Free online chess with the Crazy King

Free chess in your browser’s side panel: play the computer or a friend, daily puzzles and a coach. No ads.

Watching a video or browsing the web? Play chess right in the side panel. chesse98 is free chess in your browser’s side panel. Open it with one click while you browse and play a quick game, solve a puzzle or learn from your mistakes. Features • Play the computer: 5 difficulty levels, from very easy to a strong Stockfish • The Crazy King: a grumpy, teasing king who talks on every move • Coach mode: after a mistake the king tells you, arrows show your move and the best one, and you can undo and try again • Daily, weekly and monthly puzzles, plus free puzzles that follow your rating • Play a friend online with a short code, or two players on the same screen • Game analysis that explains your mistakes in plain words • Move suggestions against the computer, saved games, statistics and a shareable picture card • 10 avatars and 12 reactions to tease your friend; a puzzle report with your streak and dated history • Five looks, including the 90s-style chesse98 theme; 19 languages Private by design • No account, no ads, no analytics, no tracking • Games, statistics and settings stay in your browser • Online games only pass through our game server to reach your friend and are not stored Free and open source (GPL-3.0), made by Skynon Labs. Engine: Stockfish. Puzzles from the open Lichess puzzle database (CC0).