Understand Your Chess

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

Play / Train with Nova

Play and train against Nova

Our human-like neural network engine, calibrated to chess.com 500-2500 strength. Play games against Nova, train with drills, or play out positions from your own games.

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

Detailed analysis of your own openings, with concrete recommendations and in-depth explanations of 3,500+ opening positions.

Opponent Prep

Know them before the game

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

Play / Train with Nova

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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Train mode: drill endgames, master positions, and blunders from your own games against a human-like opponent

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

Drill positions from your own games

See opponent threats or get position hints

Practice critical endgame positions against Nova

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.

← 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. Toggle move arrows to visualize your personal repertoire on the board.

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

AI Opening Analysis & Repertoire Scanner

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

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

♟ 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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