How to prepare for an opponent who plays on Chess.com
Your league, club or online-tournament opponent plays most of their games on Chess.com. Good news: their public game history tells you a lot about what they will play against you. Here's a fast, honest routine.
1. Confirm the username and the time control
Get their exact username from the pairing list or the club roster. Then decide which games count: if your game is rapid or classical, their rapid and daily games are a much better guide than their bullet. Many players use a completely different repertoire at fast time controls.
2. Pull 50–100 recent rated games
Open their public profile and browse their recent rated games at your time control. Older than six months is mostly noise: repertoires change. You don't need every game, just enough to see a pattern (50 is plenty; 20 is a start).
3. Map the first three moves for each colour
Write down what they play as White on move 1, and how they answer 1.e4 and 1.d4 as Black. Club players are creatures of habit: three or four set-ups usually cover most of their games. If you see 1.d4 and Bf4 again and again, you're facing a London player; if 1.e4 c6 keeps coming up, read how to beat the Caro-Kann.
4. Score each line, not just count it
Frequency tells you what to expect; score tells you where to aim. A line they play often but score under 45% in is your target. A line where they score over 60% is one to sidestep. Watch out for small samples: five games is a hint, not proof.
5. Check how their games end
Lots of losses on time? Keep the position complicated and play for the clock. Lots of early resignations? Steer for long, grinding positions. Quick wins with gambits? Be ready to decline them calmly.
6. Write one sentence per colour, then stop
"As White: 1.e4, they score 40% against the Alapin. As Black: Caro-Kann, keep queens on." Pick lines from your repertoire that head toward their weak spot. Don't learn new theory the night before.
Common mistakes
- Mixing bullet and classical games into one picture
- Prepping a line they played once, three years ago
- Learning a brand-new opening for one game
- Ignoring your own weak spots: they may have prepped for you too
The same routine works for Lichess opponents: see how to prepare for a chess opponent and the free Opening Fingerprint.
Shortcut: OpeningSpy does steps 2–5 for you from one opponent's recent public games and hands you their weak spots and a plan for both colours in under a minute. Pick "Chess.com" on the order form ($5). OpeningSpy is independent and not affiliated with Chess.com; it looks up only the one player you ask about.