Skip to content
OnyxChess
ScanFeaturesAnalysisFAQ
Get the app↗
← Back to home

Legal notice

Information pursuant to § 5 DDG (German Digital Services Act)

Provider

BTechnology GmbH
Immermannstr. 19
40210 Düsseldorf
Germany

Contact

Phone: +49 (0) 211 8220 8870
Email: contact@onyxchess.app
Website: onyxchess.app

Represented by

Managing director: Igor Kuzenko

Commercial register

Register court: Amtsgericht Düsseldorf
Register number: HRB 83988

VAT ID

VAT identification number pursuant to § 27 a UStG: DE323696939

Responsible for content pursuant to § 18 (2) MStV

Igor Kuzenko, address as above

Consumer dispute resolution

We are neither obliged nor willing to take part in dispute resolution proceedings before a consumer arbitration board.

Trademarks

Stockfish is a free chess engine by the Stockfish developers. Lichess and Chess.com are trademarks of their respective owners. OnyxChess is not affiliated with them.

OnyxChessStockfish 19 on your device.
Legal noticePrivacySupport
DeutschEnglish
© 2026 BTechnology GmbH