Share of chess players who have blundered at least once by…
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Share of chess players who have blundered at least once by each move, by rating
Source: 8,000 blitz and rapid games from Chess.com's public archive, played in August 2026 by 7,134 players.
Tools: Stockfish 18, using the move grading from my site, Chess It Up. Stats in Node.js, chart in hand-written SVG.
Full write-up with four more charts and the CSV: https://chessitup.com/research/how-chess-players-lose
#education
source
Source: 8,000 blitz and rapid games from Chess.com's public archive, played in August 2026 by 7,134 players.
Tools: Stockfish 18, using the move grading from my site, Chess It Up. Stats in Node.js, chart in hand-written SVG.
Full write-up with four more charts and the CSV: https://chessitup.com/research/how-chess-players-lose
#education
source
| 4,000 mlx | |
| 7 | |
| 0 |