Chess · Windows

Classic chess computers
on modern Windows devices.

CZUBATRONIC 2400 turns a Windows notebook, tablet, handheld or any other Windows device into a dedicated chess computer: a professional console with warm electronic displays, a seven-segment clock and LED move indicators, and Capa, Thorsten Czub's own chess program, inside it.

0.9.36 Betabeta · free for personal use · Windows 10 / 11, 64-bit
The CZUBATRONIC 2400 console on a Windows screen
What it is

A new chess computer from an era that never quite ended

Modern engines calculate more positions per second than anyone can imagine, and they all play alike. The dedicated machines of the 1980s and 1990s did not. A Mephisto felt different from a Fidelity, a Novag from a Saitek, and their owners argued about playing style, tactics, endgames and whether the thing really understood chess.

CZUBATRONIC 2400 is deliberately an anachronism: a dedicated chess system built in 2026 that belongs to that world. Its fascia, displays and controls are those of a professional chess computer. Its heart is a program with a recognisable origin, a history and idiosyncrasies of its own.

It is a tribute to Thorsten Czub, to his engine Capa, and to the manufacturers and programmers who gave computer chess its golden age.

For families: safe, offline, with a coach →

Any Windows device

The machine you remember, on the screen in front of you.

CZUBATRONIC is not tied to a form factor. The console sizes itself to its content and stays readable at any display scaling; it is driven by touch or by mouse and keyboard; it runs from the installer or from a portable folder on a USB stick.

Notebook

The console on a laptop screen, with the clock, the LED board and the computer-status readout in view. Installer or portable edition.

Tablet and touch

Touch control for moves, menus and the setup palette. The window scales with the display.

Handheld and small screens

The layout keeps its proportions at small sizes; the board view can be maximised when the board is all you need.

Offline, no account

Everything is in the download: program, engines, artwork and fonts. Nothing else is installed, and nothing phones home.

Main features

Play, study, compare engines, choose the look.

Sit down at the console

Choose a side, a clock and the engine control, and play. The computer-status display names the opening from an ECO database, shows the engine’s depth, nodes, speed and evaluation, and tells you whether the move came from the book.

Capa does not answer in a quarter of a second. In a game against you it takes a human-feeling thinking time: fast for book moves, forced moves and recaptures, longer in a complicated middlegame, now and then a long think, always within its clock. Press MOVE NOW if you are in a hurry.

The computer-status display naming the opening while Capa plays

Capa, Pioneer, Tacticon, or any UCI engine

Capa is the standard engine: Thorsten Czub’s program, begun on a Sinclair Spectrum, carried through Amstrad, Atari and PC, and brought back to life in 2026 as a modern UCI engine that still keeps its twelve levels, its permanent brain and its commentary.

Pioneer, the engine of Pioneer 2 Chess, comes with a calibrated ladder from Novice to Grandmaster. Tacticon and Zukertort 85 are bundled as further opponents. Any other UCI engine can be validated and selected, and remembered as your standard engine for the next start.

Engine match on the console with both engines' output side by side

Set up any position. Replay any game.

The setup palette puts pieces on the board, chooses the side to move and which side you play, the engine control and the clock, then START PLAYING THIS POSITION. Positions are validated, and the engine moves at once if the first move is its own.

Games are saved as standard PGN with the starting position preserved. Open any PGN, click through the move list, step with the four keys under it (to the start, a move back, a move forward, to the end) or the arrow keys, and continue from any move with PLAY FROM HERE. ANALYZE asks the engine for its verdict without touching the game.

The setup palette: pieces, side to move, engine control and clock

Four schemes, four piece sets

Walnut is the original: the warm finish of a dedicated machine. Blue, Green and Graphite turn the same console into an electronic instrument, a hardware-green panel or dark ABS plastic with amber displays. Pieces come as the current CZUBATRONIC set, the original 2D production set, and two wooden Staunton sets. The window sizes itself to its content and stays readable at any display scaling. OPTIONS holds the scheme, the pieces, the move indicator and the brightness of the board LEDs, the mode, the beep, the notation and the board view.

OPTIONS: scheme, pieces, move indicator, LED brightness, notation and board view
Product options

One console. Choose how you want it.

Option 1

CZUBATRONIC 2400

For users who want the complete CZUBATRONIC software environment on a Windows device.

  • core application
  • bundled engines: Capa, Pioneer, Tacticon, Zukertort 85
  • external UCI engine support
  • offline use, no account
  • updates according to the licence policy
€79Planned price · subject to change · one-timeProduct in preparation
Orders open at launch
Option 2

CZUBATRONIC 2400 Board Edition

Everything in CZUBATRONIC 2400 plus play on a physical electronic board.

  • Board Connectivity
  • supported electronic chess boards
  • USB and Bluetooth connection
  • physical-board play

Already own CZUBATRONIC? Purchase the Board Connectivity Upgrade.

Which boards work? →

€129Planned price · subject to change · one-timeProduct in preparation
Orders open at launch

Prices marked “Planned price” are provisional and may change before launch. These products are in preparation and cannot be ordered yet.

Board connection

One module, six board families

The Board Edition's board connection is not tied to one board. It recognises the board you connect and picks the matching adapter, so one program reaches six board families and about twenty models.

FamilyBoardsConnectionLightsStatus
Millennium ChessLinkeONE directly; Exclusive, King Performance, King Competition, Supreme Tournament 55 and Phoenix through the ChessLink moduleSerial (cable) and BluetoothYesTested on a board
DGT classicEvery classic DGT e-Board over USB, and the Bluetooth e-Board after PIN pairingSerial (cable)No, the boards have noneTested on a board
DGT PegasusPegasusBluetoothYesBuilt, not yet tested
CertaboCertabo boards, TabuTronic Cerno, TabuTronic SentioSerial (cable)YesPartly tested
ChessnutAir, Air+, Pro, Go, Move; also boards that present themselves as Chessnut, such as Square Off behind BillyGate or a Certabo behind cer2nutBluetooth and USBYesBuilt, not yet tested
GoChessGoChess and GoChess XRBluetoothYes, full colourBuilt, not yet tested

Checked on real boards

BoardResultDate
DGT over USBA full game3 October 2026
Millennium ChessLink over BluetoothA full game4 and 5 October 2026
TabuTronic Cerno over USBFound, read and lit; a full game follows with the next preview build6 October 2026

All other adapters are built from published protocol information, every constant with its source, and have not yet been checked on a real board.

Karpov squeezes. Tal sacrifices. Capablanca simplifies.

Reconstructed from their own games, as opponents in your console.

The personalities
ChessGate Personality Engines

A grandmaster's style, at your own level.

Every modern engine plays better than any human, and every one of them plays like no one. ChessGate starts from the other end: each personality is rebuilt from the player's own games, thousands of positions in which the move actually chosen is known. A modern engine measures those choices the way a laboratory calibrates an instrument against reference standards, and what comes out is the style: not an opinion about a player, a measurement of one. And because the style is separate from the strength, you can face it at your level: Tal's attack or Karpov's squeeze against a club player, not only against a grandmaster.

Strong engines exist in every chess program. A player whose character survives when you turn the strength down to yours is what we have not seen anywhere else. As far as we know, nobody had measured a chess player's style before.

At your own level

On ChessGate the levels from club player to grandmaster are calibrated by measurement, and the personality keeps its character at every one of them. In CZUBATRONIC 2400 you set the engine's depth or thinking time; the style layer works on whatever the engine finds at that strength.

Measured, not dialled in

No attack slider, no random mistakes, no borrowed opening book. The style is the measured relationship between the master's moves and the engine's, position after position, across the whole career.

A card for every grandmaster

Chess has more positions than the universe has atoms; Karpov never saw yours. Each player's card records what they preferred for every combination of pawn structure, piece activity, king position, threats and phase, so a position they never saw still falls through holes punched by thousands they did.

Strong chess, recognisable choices

The engine supplies the sound moves; the personality chooses, among them, the one this player would have played. Style may cost a little, by a measured amount. It never costs the game.

How the personalities work

The Personality Engine: built for your chess interface
  • the complete personality model: the player's full plan library, opening repertoire and style profile
  • a deeper search that weighs ten candidate lines every move, with the time and processor your own machine gives it
  • loads into CZUBATRONIC 2400 and into any UCI chess interface; runs locally, offline, no account
  • the choices are explained move by move in the engine output
ChessGate in the browser: a different experience
  • the same players on a shared server, tuned for instant replies and no installation
  • free to play at playchessgate.com, with calibrated levels and the Mystery GM
  • a lighter personality model than the engine you install

Flagship personalities

Packs

The console, screen by screen

What you can do with it

8 screens, in the order you meet them: sit down, play, let two engines fight it out, set up a position, and make the console your own. Click a screen to see it full size.

Sit down at the console
The display names the opening
Let the engines fight
Set up any position
Four schemes, four piece sets
Green, with the original 2D set
The console's look and manners, in one place
A life in computer chess
1 / 8

Sit down at the console

A Breyer Ruy Lopez against Capa, the clock running, the engine's eleventh move just played and lit on the board. Walnut fascia, chess clock, engine display, move history: the dedicated machine, on your screen.

2 / 8

The display names the opening

The status display has just named the opening: C95 Ruy Lopez, Breyer Defence. While the machine thinks it shows depth, nodes, speed and evaluation, and tells you whether the move came from the book.

3 / 8

Let the engines fight

Capa versus Pioneer at fixed depth 4, both engines' search output side by side in the match panel, the final checkmate on the board. Pick two engines, one condition, and watch.

4 / 8

Set up any position

The setup palette: pieces, side to move, which side you play, the engine control and the clock, then START PLAYING THIS POSITION. Positions are validated, and the engine moves at once if the first move is its own.

5 / 8

Four schemes, four piece sets

Blue, with the wooden Staunton set. Walnut is the original; Blue, Green and Graphite turn the same console into an electronic instrument, a hardware-green panel or dark ABS plastic with amber displays.

6 / 8

Green, with the original 2D set

The pieces come as the current CZUBATRONIC set, the original 2D production set, and two wooden Staunton sets. The window sizes itself to its content and stays readable at any display scaling.

7 / 8

The console's look and manners, in one place

OPTIONS: scheme, pieces, move indicator, the brightness of the board LEDs, mode, beep, notation and board view.

8 / 8

A life in computer chess

The interview reader inside the console: Thorsten Czub, from a black-and-red machine that could not spot an illegal move to Cologne 1986 and a program of his own. The engine you play against was written by someone who was in the room.

Arrow keys move, click the screen for full size
Questions

Frequently asked questions

What does the beta cost, and what comes after it?

The beta versions are available for personal, non-commercial use under the beta license, with no account, no subscription and no advertising. They are early access to what will become a dedicated chess computer program for Windows: the finished CZUBATRONIC 2400 will be a commercial product, and the beta is the way to get to know it, and to shape it, now.

Which Windows versions does CZUBATRONIC 2400 run on?

Windows 10 and Windows 11, 64-bit. The download contains everything: the program, the Capa, Pioneer and Tacticon engines, the artwork and fonts. Nothing else needs to be installed.

Do I need administrator rights to install it?

No. The installer puts the program into your own user profile. The portable edition needs no installation at all: unpack the ZIP into any folder or onto a USB stick and start CZUBATRONIC.exe ; its settings stay in a config folder beside the program.

Which chess engines are included, and can I use my own?

Four engines are bundled: Capa, Thorsten Czub’s own program, as the standard engine; Pioneer with a calibrated ladder from Novice to Grandmaster; Tacticon; and Zukertort, one of playchessgate.com’s historical personality engines. Any other UCI engine can be added with ENGINE → BROWSE UCI ENGINE , validated with a UCI handshake, and remembered as your standard engine.

What is Capa?

Capa is the chess program Thorsten Czub began in the 1980s on a Sinclair ZX Spectrum and carried through the Amstrad CPC, the Atari ST and the PC. Named after Capablanca, it was his laboratory rather than a contender for the strongest engine, and it had twelve levels, permanent brain and its own commentary. In 2026 development resumed: Capa became a modern UCI engine with hash tables, an opening book and modern search techniques while keeping its original features. New builds are published on this page.

How strong is CZUBATRONIC 2400?

It is deliberately not a modern top engine. Pioneer’s calibrated levels range from Novice (about 1170 Elo) to Grandmaster (about 2450 Elo). Capa and Tacticon are driven by explicit controls: fixed depth, seconds per move or the game clock. The point is a dedicated chess computer with an identity, not the highest rating.

Does CZUBATRONIC 2400 work offline?

Yes, completely. Nothing is sent anywhere. Games are saved as PGN files wherever you choose; settings and a diagnostic log live in %LOCALAPPDATA%\CZUBATRONIC for the installed edition or in the config folder beside the program for the portable edition.

Windows SmartScreen shows a warning. Is the download safe?

The program is not code-signed yet, so Windows shows its standard warning for unsigned downloads. Choose More info and then Run anyway . The SHA-256 checksums of the official installer and portable ZIP are listed on this page so you can verify what you downloaded.

How is CZUBATRONIC 2400 related to PlayChessGate and Pioneer 2 Chess?

All three come from DCS Analytics. PlayChessGate lets you play the chess legends online, Pioneer 2 Chess is the talking Soviet chess computer, and CZUBATRONIC 2400 is the dedicated chess computer for your Windows desktop, with the Pioneer engine shared between them.

Download

Download CZUBATRONIC 2400 0.9.36 Beta

The installer puts the console into your user profile, no administrator rights needed. The portable edition is the same program in a ZIP: unpack it anywhere, even on a USB stick, and it keeps its settings beside itself. Both include Capa, Pioneer and Tacticon, the manuals and the release notes.

Installer

CZUBATRONIC_2400_0.9.36_Beta_Setup.exe
51.1 MB · SHA-256 ed13a0200fc7f2c0…

Download installer

Portable ZIP

CZUBATRONIC_2400_0.9.36_Beta_Portable.zip
57.3 MB · SHA-256 f39a155ed57ba861…

Download portable

Windows 10 / 11, 64-bit · Version 0.9.36 Beta · 2026-10-16 · The beta is available for personal, non-commercial use under the beta licence: no account, no subscription, no advertising.

Manuals

CZUBATRONIC 2400 is in beta

The finished CZUBATRONIC 2400 will be a commercial product. The beta is the way to get to know it, and to shape it, now.