A toolkit for chess parents, players & organizers. Five tools, each its own app — all running locally with Stockfish 18.
Upload chess.com / lichess PGNs and get a deep report: openings, phase strengths, tactics, blunders, loss patterns, W/D/L by time control, and a puzzle-based training plan. The main player is auto-detected — no picking required. Save as Markdown and grow it over time.
Open analyzer →Watch a live lichess game move-by-move with instant engine feedback on every move, or set up any position (FEN or click-to-move) and get Stockfish 18's best move, evaluation and principal variation.
Open live board →Paste a tournament roster or upload a file, then run a full Swiss tournament: automatic round pairings (color balancing, no rematches, byes), result entry, and live standings with Buchholz & Sonneborn-Berger tiebreaks.
Open pairings →Estimate your new US Chess rating after an event: enter your current rating, score, prior games and up to 15 opponent ratings to get your new rating, performance rating, K-factor and bonus points.
Open estimator →Estimate your new FIDE Standard rating after an event: enter your current rating, score, prior games and up to 15 opponent ratings to get your new rating, performance rating and K-factor.
Open estimator →