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Scouting Your Opponents

What a rating number hides, and what to look at instead

ChessOnyx·2026-08-08·3 min read

A rating is one number describing one time control at one moment. It is a reasonable summary and a poor description. Two opponents rated 1500 can be completely different players, and the difference is usually visible before the game starts.

Opponent Check pulls the recent field you have been facing and shows what the single number leaves out.

Live Rating Versus Peak

The first thing worth separating is where somebody is now from where they have been. A player currently at 1500 who peaked at 1800 is usually in a slump, on a new account, or coming back after a break — and they are not a 1500-strength player in any meaningful sense.

The reverse matters too. A 1500 who has never been higher is exactly what their rating says. Knowing which of these you are facing changes how much you should trust the number.

Ratings Across Time Controls

Most players are not equally strong at every speed, and the gaps are often large. Somebody rated 1400 at blitz and 1800 at rapid is a strong player who does not handle speed well. Somebody rated 1800 at bullet and 1400 at rapid is the opposite: fast pattern recognition, weak calculation.

Seeing an opponent's full cross-mode profile tells you which one you are facing, and that is genuinely actionable. Against the first, the clock is a real weapon. Against the second, slowing the game down and reaching positions that require calculation is the better plan.

The Field You Have Actually Been Facing

Beyond individual opponents, the per-mode summary shows the average current and peak rating of everyone you have played in a window, along with your record against them.

This answers a question most players never check: are you actually playing at the level you think you are? If your rating is stable but the average peak rating of your opponents is well above yours, you are facing a harder field than your number suggests. If it is well below, the reverse.

Baseline Versus Against You

The deep scan is the part with the most in it. It analyses an opponent's recent games to establish their normal accuracy and performance, then compares that to how they played specifically against you.

The comparison is more interesting than either number alone. If opponents consistently play above their baseline against you, something about the positions you produce is bringing out their best — often that means you are reaching sharp, forcing positions where the correct move is easy to find.

If they play below their baseline, you are doing something right: your positions are making them uncomfortable, even in games you lose.

An Honest Limitation

None of this tells you what your opponent will play. It is context, not preparation, and it works best over a run of games rather than a single one.

It is also backwards-looking. A player improving quickly will keep outperforming their recent history, and no amount of scouting catches that until the numbers update. Treat it as a better description of the field than a rating alone, not as a prediction.

Further Reading

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