For iPad · made for your real board

Play with clarity

Kernel Chess sits beside your board. It follows the game, plays back as a fair opponent, and afterwards shows you plainly where things went well and where they didn't.

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Game reviews

See your mistakes, explained

After each game, Kernel walks through your moves and points out the ones that mattered. Each mistake comes with what it cost you and what to look for next time, in plain language.

6.Ne4MISTAKE
CostYou missed a chance to develop your pieces and defend your king.
Instead of developing, you moved your bishop to f4. This didn't address the immediate threats.
Kernel Chess game review highlighting a blunder and what it cost
What to improveFrom your last 20 game reviews
Blunders per game1.4
Endgame conversion38%
Opening accuracy91%
You tend to blunder after strong openings. Try slowing down before each move.
Coaching

Know what to work on

Kernel looks across your recent games and finds the patterns. Not a wall of statistics, just the two or three things that would actually change your results.

Kernel Chess coach tip warning about a hanging piece during a game
Play

A patient opponent, at your level

Play against the engine on your board at a strength that suits you, with the screen alongside for when you want it. During the game it can name the opening and quietly warn you when a piece is in trouble.

StockfishMedium
04:57
1. Nc3 d52. e4 d4
Van Geet Opening · A00Your knight on c3 is attacked by the pawn on d4. Consider moving it to safety.
Board connected
Kernel Chess playing a game against Stockfish with the board connected
Boards

Made for your electronic board

Kernel Chess connects to the Chessnut Go today. Support for more boards is on the way.

Chessnut Go
SUPPORTED
Chessnut Air
PLANNED
Chessnut Air+
PLANNED
Chessnut Pro
PLANNED
DGT Pegasus
PLANNED