A position from a real game is shown with a move that is about to be played. Decide: a good move, or a blunder? Ten rounds.
Blunder Check
Blunder Check trains the habit that saves the most games: asking what is wrong with a move before it is played. A position from a real game is shown with the move about to be made, and you decide whether it is a good move or a blunder. The page then shows the line that proves it.
How to play
- Press Start. The board shows the position, with the move that is about to be played marked on it.
- Press "Good move" or "Blunder".
- You are told which it was. For a blunder you see the moves that punish it; for a good move, how the game went on. After ten rounds you see your score.
Questions
- How does the page know which moves are blunders?
- From the Lichess puzzle database. Each puzzle starts with a move that allowed a winning tactic, which an engine found and verified: that move is the blunder. The solver's reply in the same puzzle is the one good move in its position.
- Is a "good move" just any reasonable move?
- No. The good moves shown here are the only moves that keep the advantage in their positions, so each answer is clear cut.
- How should I think about each position?
- Look at what the move leaves undefended and which checks, captures and threats the other side then has. If one of them wins material or mates, the move is a blunder.