Understand Your Chess

Game analysis, personalized study, and our human-like Nova engine to play and train against.

Play Bots

A human-like opponent

Play our human-like Nova engine or one of 25 named personalities — from beginner bots to grandmaster-inspired Legends. Pick your time control, toggle hints or threats, and review the game after.

Train

Sharpen every skill

Nearly 100k puzzles across tactics, positional judgment, endgames, and famous master games — plus drills on your own mistakes, repertoire training, and two timed challenges.

Game Analysis

Every move explained

Stockfish-backed move-by-move review with AI commentary grounded in 40+ structural features and concrete engine lines.

Player Insights

Your coaching dashboard

Performance, playing-style analysis, and personalized coaching from your recent games.

Opening Explorer

Repertoire vs master play

Build a personal repertoire — import a PGN or Lichess study, or generate one from your games — then analyze your openings against master play across 3,500+ explained positions.

Opponent Prep

Know them before the game

Predicted lines, exploitable weaknesses, and match prep strategy for any Chess.com or Lichess opponent.

Play Bots

A neural-network opponent that plays like a human

Nova is a 99M-parameter style-conditioned transformer trained on millions of human games. It plays like a real opponent at the rating you choose, calibrated to Chess.com blitz scale from 500 to 2500, with no engine perfection or "computer move" tendencies. Pure pattern recognition, single forward pass, no search.

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Calibrated strength: 21 rating presets from 500 to 2500, each tuned to match real human play at that level

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25 named personalities: from quirky beginners to grandmaster-inspired Legends — Hunter the king-hunter, Pierre who refuses to castle, Roscoe the pirate gambiteer, and Legends modeled on Morphy, Capablanca, Tal, Petrosian, and more. View all bots ›

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In-game help: toggle opponent threat highlights and position hints, then run a quick game review when you're done

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Open-source model: weights and architecture published, with pure-policy benchmarks matching state-of-the-art on human-move prediction

See opponent threats or get position hints

Pick from 25 named personalities, beginner to Legend

Train

A complete training arena

Nearly 100,000 puzzles and drills spanning tactics, positional understanding, endgames, and master games — plus practice built from your own games and openings, and two timed challenges to test yourself under pressure. Every session is tracked so you can watch your progress.

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Tactics: 72,000 curated puzzles across four skill levels and six themes

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Positional Judgment: Guess the Eval and Rate the Moves — train the evaluation skills engines can't hand you

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Endgames & Master Games: theoretical endings, 28 classified pawn structures, and 100+ historically famous positions

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My Games & Repertoire: drill the critical positions you misplayed, review opening mistakes, and walk your repertoire against weighted opponent replies

Drill critical positions from your own games

Drill the critical moments from your own games against Nova

Positional Judgment — judge the position, not just the best move

Puzzle Blitz — a two-minute, adaptive tactics sprint

Game Analysis

Every move explained. Every position understood.

Import from Chess.com or Lichess with one click. Every position is analyzed with Stockfish, then enriched with 40+ structural features (pins, forks, pawn structure, king safety, material balance) before AI generates move-by-move commentary grounded in concrete engine lines and measurable position features.

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Every move explained: short notes on each move, with deeper analysis on mistakes, brilliancies, and critical turning points

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40+ position features: pins, forks, pawn structure, king safety, and material balance feed the commentary

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Depth-20 engine: Stockfish with up to 5 candidate lines evaluated on every position

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Position Deep Dive: open any position for a deeper engine + AI breakdown

AI Game Commentary

Position Deep Dive

Player Insights

Your complete coaching dashboard

Import your recent games and unlock a full performance dashboard with playing style analysis, key highlights, coaching insights tied to position difficulty, mistake categorization, opening performance, and coaching reports.

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Key Highlights: strengths & weaknesses from your games

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Time & Accuracy: how you budget your time and perform in different types of positions

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Mistake Categories: tactical, strategic, endgame themes

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Opening Performance: win rates & repeated errors

Overview: Performance & Playing Style

Insights: Time & Accuracy by Difficulty

Mistakes & Moments: Categorized Errors

Openings: Performance & Repeated Errors

Opening Explorer

Your openings, analyzed against master play

Explore 3,500+ opening positions with written strategic plans, then scan your Chess.com or Lichess games to see where your moves differ from master play. Build a personal repertoire — import a PGN or Lichess study, or generate one from your games — then review, edit, and export it, with move arrows visualizing it on the board.

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3,500+ positions with written strategic plans across the opening tree

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Repertoire scan: see exactly where your moves diverge from master play, with arrows on the board

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Personal repertoire: import a PGN or Lichess study, or build from your games — then edit and export

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My Continuations: your move frequencies color-coded against master play

Deep Scan adds Stockfish evaluation on every flagged move and an AI-generated summary of your biggest opening issues, all for 1 credit.

Build, edit & export your repertoire — import PGN or Lichess study

3,500+ Positions with Strategic Plans

Opponent Prep

Know your opponent before they sit down

Enter any Chess.com or Lichess username and get a complete pre-match briefing. Nova Chess analyzes both your games and your opponent's to predict likely opening lines, identify exploitable weaknesses, and generate a concrete preparation strategy with engine-backed follow-up moves.

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Predicted Lines: see the most likely opening based on both players' histories

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Preparation Strategy: engine-analyzed key positions with the trickiest follow-ups

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Style Comparison: tactical tendencies, space preferences, pawn structure matchups

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AI Briefing: synthesized report tying openings, structures, and strategy together

Opponent Prep: Style, Structures & AI Brief

Style comparison, pawn structures & the AI preparation brief

Opponent Prep: Deviations & Preparation Strategy

Theory Deviations & Engine-Backed Preparation Strategy

Pricing

Start free, upgrade when you're ready

No credit card required. Full access to all features on both plans.

Credits are used for

🔍 AI Game Reviews

🧠 Position Deep Dives

📋 Coaching Reports

🎯 Opening Deep Scans

🗂️ Building Your Opening Repertoire

🧩 Puzzles From Your Own Games

♟ Opponent Prep Reports

	Chess.com	Nova Chess
Free $0	● 1 full review per day	✓ Unlimited quick review ✓ 5 AI credits / month ✓ Player dashboard & coaching ✓ Opening analysis & repertoire tracking
Gold $7/mo	● Still 1 review per day ✓ Adds puzzles, lessons, bots	Pro One tier $7.99/mo ✓ Unlimited quick review ✓ 200 AI credits / month ✓ Player dashboard & coaching ✓ Opening analysis & repertoire tracking ✓ Depth 30 Stockfish
Platinum $12/mo	✓ Unlimited reviews ✕ No explanations on moves
Diamond $20/mo	✓ Unlimited reviews ✓ Coach explanations on all moves

Analysis quality	Engine Server-side · node budget · single best move Explanations Template-based one-liners "Your best move was to block an attack on a vulnerable pawn."	Engine Dedicated remote servers · depth 20 · 5 candidate lines Explanations AI grounded in position features & real variations "The correct move was 14...g6, solidifying the kingside structure. After 15. Ne4 Bxe4 16. Bxe4, Black maintains a balanced position with the strong knight outpost on d4 and no structural weaknesses. Advancing the pawn with 14...g5 weakens Black's kingside by creating targets on f7 and g5 itself, allowing White to open the f-file with 15. fxg5 and generate immediate pressure, leading to an inferior structure despite winning a pawn after 15...Qxe5."

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