DCS Analytics
DCS Chess — Made in Germany Chess · Play online

Not a difficulty slider.
An opponent.

Setting an engine to 1800 gives you a 3200-rated player making deliberate mistakes. It does not feel like a person, because it isn't one. ChessGate models the way particular players actually thought – so Karpov squeezes, and the game you get is the game they would have given you.

Free online at playchessgate.com · supported by donations
ChessGate at playchessgate.com: choose your opponent among fifty reconstructed legends
How it works

Style is a property of the search, not a handicap applied afterwards.

Each personality carries its own evaluation preferences and risk appetite. The result is an opponent that is recognisably somebody – and one whose mistakes are the kind a human makes.

An opponent with a character

Choose your opponent and their era. Each comes with a portrait, a rating for that period and a description of how they played – "the boa constrictor, slowly squeezing the life out of positions". The clock runs, and their thinking time is shown as they use it.

  • Historical personalities with period-appropriate strength
  • Opening classification with ECO code shown live
  • Move list, clocks and standard game controls
Legend profile: Anatoly Karpov with era, peak rating and style, and the button to play him

Style analysis – of you

While you play, ChessGate assesses your own moves along the same dimensions it uses to model its opponents: tactical inclination, piece activity, risk appetite. It then tells you which historical player you are currently playing like.

  • Live tactical / activity / risk profile of your play
  • "Playing like" attribution with a confidence figure
  • Style suggestions as your game develops
Bewerten Sie sich selbst: play through historic positions and get rated on the same scale as fifty engines

Commentary that says something useful

A position commentary panel explains the assessment in words rather than a centipawn number: where the weaknesses are, who holds which advantage, and what each side should be trying to do next.

  • Strategic assessment in plain language
  • Explicit plans for both sides
  • Board themes and full dark mode
Replaying a game against ChessGate-Capablanca with the commentary panel
Specifications

Technical details

PlatformWeb application at playchessgate.com. Runs in a current browser on desktop, tablet or phone.
InstallationNone.
ConnectivityOnline. No account required to play.
FormatsPGN export of played games.
LicenceFree to play. Supported by donations. The personalities are also available as downloadable Windows UCI engines in the DCS Chess shop.
Questions

Frequently asked

How is this different from setting an engine to a lower level?

Reducing an engine's strength gives you a very strong player making artificial mistakes, which does not resemble a human. ChessGate models style as a property of the search itself – evaluation preferences and risk appetite characteristic of a particular player – so the games have the shape, and the kind of errors, a human would produce.

What is style analysis?

While you play, ChessGate assesses your own moves along the same dimensions it uses to model opponents – tactical inclination, activity, risk – and tells you which historical player you are currently playing like, with a confidence figure.

Does it explain the position?

Yes. The commentary panel describes the assessment in words rather than a centipawn number: where the weaknesses are, who holds which advantage, and what each side should be trying to do next.

Does it need an internet connection?

Yes. ChessGate runs in the browser at playchessgate.com. No account is required to play, and nothing is installed. The personalities are also available as downloadable Windows UCI engines in the DCS Chess shop.

Is it a subscription?

No. ChessGate is free to play in the browser at playchessgate.com, supported by donations. The personalities are also available as downloadable Windows UCI engines in the DCS Chess shop.

ChessGate – play online, free

ChessGate runs in the browser at playchessgate.com — nothing to install, no account needed to play. It is supported by donations. A downloadable Windows edition is not currently offered.