Everything for better chess.

Play, understand, train and checkmate with friends. In your browser and on iPhone, with one account.

Play

A big board that feels right. Drag, click or type, in 2D or 3D.

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Seven bots: From Bernd at 400 to Mattly Max at 2300 Elo. Each with a style of its own and mistakes that fit its level.
Realistic clones: Up to 200 games of a Chess.com or Lichess account become a bot that opens and trades like the original.
Every time control: Bullet, blitz, rapid, classical and daily with 1, 3 or 7 days per move.
Maximum board: The board takes all the room your screen allows. Bigger pieces, clear squares.
Moves by keyboard: Type Sf3 or Nf3. German and English both work.
3D board: A fixed, readable camera, real materials from marble to crystal and soft shadows.

After every game the coach explains in plain sentences what happened. Or roasts you, out loud.

4. Sxe5?

Greedy. Now g2 hangs, and Black was waiting for it. 4. c3 was better.

Roast: White bites the bait like Bernd at a buffet.

Verified motifs: Fork, pin, skewer, discovery, overloaded defender, trapped piece, back rank and in between moves, each verified on the board.
Openings with a plan: The name of your opening and what to aim for next.
Find weaknesses: Bring your games from Chess.com or Lichess and see where you lose the most points.
Roast mode: Mild, cheeky or brutal commentary, read aloud and as a card to share.
Notepad: Notes for every game and every move. Private and back in the analysis later.

Puzzles that match your strength, and a new daily puzzle every day.

Over 750 puzzles: Every solution checked by a strong engine, sorted by theme.
Puzzle rating and streak: Your rating grows with every clean solve.
Board editor: Set up any position, check it and play it out against a bot.

Opponents at your level, a server that checks every move, and friends to talk to.

Rematch?Sure. 3+2, you get White.Well played.

Arena and Lichess: Rated or casual in the Mattly Arena, or with your Lichess account in the big pool.
Friends and messages: Friends by name or QR code, challenges, direct messages and a feed of their wins.
Voice chat: Only when both agree. Plus adds captions and translation.
Mattly TV: The strongest running games live, with a viewer count.
Leagues, Kronen and clubs: Six leagues from pawn to king, Kronen for real achievements, clubs for your people.