IMPORTANT! Before starting any use of the Program listed below, please carefully read the terms of use contained in this Agreement. Installation, registration, access, or any other initiation of use of the Program signifies proper conclusion of this Agreement and your full acceptance of all its terms. If you do not unconditionally agree to the terms of this Agreement, you are not entitled to use the Program.

LICENSE AGREEMENT

This License Agreement (hereinafter referred to as the “Agreement”) applies to the computer program “ChessWin” (commercial name – Chess.run platform) (hereinafter referred to as the “Program”).

1. BASIC TERMS

1.1. Licensor – LLC “CHESS RUN” (OGRN 1257800073937, INN 7801743882), legal address: St. Petersburg, within the territory of the Municipal District Vasilievsky, lane 6-Y v.o, building 55, lit. A, room 1-N, represented by the director Volkovitsky Maxim Borisovich.

1.2. Licensee – any individual or legal entity entitled to use the Program for their own interests in accordance with the requirements of applicable law and this Agreement.

1.3. Program – presented in objective form, a set of data and commands including source code, databases, audiovisual works, as well as accompanying documentation, intended for organizing and conducting online chess training, creating chess courses, managing the learning process, and paying for services.

1.4. Use of the Program – any actions related to the operation of the Program’s functionality, including access to it via the Internet, interaction through the API interface, uploading and/or displaying Content (user materials), launching or other operation as provided for in this Agreement and technical documentation.

1.5. Content – any materials (texts, images, chess games in PGN/FEN format, videos, files, etc.) uploaded by the Licensee or Authorized Users into the Program.

1.6. Authorized User – a user registered by the Licensee in the Program who has authorized themselves at least once.

1.7. Account – a set of data and settings for a single copy of the Program with a unique identifier, combining objects and Content for joint display and use.

1.8. Technical Support – activities carried out by the Licensor to ensure the functioning of the Program and provide consulting support to Licensees.

1.9. Type of License (Tariff) – a set of terms for using the Program (number of Authorized Users, storage volume, functions, etc.) published online at https://chess.run/chess-coach.

1.10. API – the interface for interaction between the Program and third-party applications, available under the terms of this Agreement.

1.11. Registration – the action taken by the Licensee aimed at creating an Account and/or an Authorized User account.

2. SUBJECT OF THE AGREEMENT

2.1. The Licensor grants the Licensee a non-exclusive right to use the Program within its functional capabilities by accessing the Program via the Internet (SaaS model) solely for the Licensee’s own needs without the right to sublicense.

2.2. The Agreement is deemed concluded from the moment of the first use of the Program and is valid throughout the duration of the Licensor's exclusive rights provided the Licensee complies with the terms of the Agreement.

2.3. The right to use the Program is granted without territorial restrictions.

3. COPYRIGHTS AND TRADEMARKS

3.1. The Program is a subject of copyright (reg. No. 2025610770 dated 14.01.2025). The exclusive rights belong to the Licensor.

3.2. The algorithms, architecture, and source code of the Program are a commercial secret of the Licensor. Any use thereof in violation of the terms of the Agreement is regarded as a violation of the Licensor’s rights.

3.3. This Agreement does not transfer to the Licensee rights to the trademarks Chess.run, ChessWin, and other marks of the Licensor.

4. TERMS OF USE AND RESTRICTIONS

4.1. The Licensee has the right to:

• register and create Accounts;
• upload Content to the Account, provided it does not violate the law and the terms of the Agreement;
• use the functional capabilities of the Program to the extent provided by the chosen Type of License.

4.2. The Licensee and Authorized Users may not:

• decompile, disassemble, modify the Program, except in cases explicitly provided by law;
• copy, resell, or otherwise transfer rights to the Program to third parties without the written consent of the Licensor;
• perform actions that disrupt the normal operation of the Program or limit use by others;
• engage in mass unauthorized mailing ("spam") using the Program.

4.3. The Content remains the property of the Licensee. By uploading Content, the Licensee grants the Licensor a non-exclusive license to process, store, back up, and display such Content solely for the purpose of fulfilling this Agreement. The Licensor does not claim any ownership rights to the Content.

4.4. The Licensee is fully responsible for the Content, its compliance with the law, obtaining necessary rights and consents, and for any damages caused by the posting of Content.

5. ASSIGNMENT OF RIGHTS

5.1. The Licensee has the right to assign their rights and obligations under the Agreement to another person one time, provided that the latter fully accepts the terms of the Agreement.

5.2. The transfer of rights is carried out after notifying the Licensor and re-registering the Account.

6. TYPES OF LICENSES

6.1. The list of tariffs and their terms is published on the website https://chess.run/pricing and may be changed by the Licensor unilaterally 14 days before the changes take effect.

6.2. The Licensee may be granted a free trial license under the terms and conditions determined by the Licensor.

6.3. The term of the license starts from the date of Account creation.

6.4. After the paid period expires, access to the Program may be restricted until the purchase of an extension or change of tariff.

7. PROCEDURE OF USE

7.1. Registration: The Licensee is obliged to provide accurate information and keep it up to date. The Licensor has the right to block the Account if inaccurate data is detected.

7.2. Login/Password: The Licensee bears responsibility for the security of their account credentials.

7.3. API: No more than 7 requests per second are allowed. In case of suspicious activity, access to the API may be restricted.

8. TECHNICAL SUPPORT

8.1. The Licensor provides Technical Support via email hi@chesswin.org and other channels indicated on the website.

8.2. To provide support, the Licensor has the right to request technical information about the Licensee's system.

9. LIMITED WARRANTY AND LIABILITY

9.1. The Program is provided “as is.” The Licensor does not guarantee that the Program meets the expectations of the Licensee.

9.2. The Licensor is not liable for any direct or indirect damages related to the use or inability to use the Program.

9.3. Upon discovering errors, the Licensor aims to rectify them within a reasonable time frame but does not guarantee the complete absence of errors.

10. PROCESSING OF PERSONAL DATA

10.1. By accepting this Agreement, the Licensee consents to the processing of personal data to the extent necessary for the performance of the Agreement, in accordance with Federal Law 152 and (if necessary) GDPR.

10.2. The Licensor takes measures to protect personal data from unauthorized access.

10.3. The Licensee has the right to withdraw consent for the processing of personal data by sending a request to hi@chesswin.org. Withdrawal of consent may limit the functionality of the Program.

11. VALIDITY, AMENDMENT AND TERMINATION

11.1. The Licensor may unilaterally change the terms of this Agreement. The new edition comes into effect 14 days after publication on https://chess.run/privacy.

11.2. In case of violation of the terms of this Agreement by the Licensee, the Licensor may unilaterally terminate the Agreement and block access to the Program.

11.3. The invalidity of part of the Agreement does not imply the invalidity of the entire Agreement.

12. ADDITIONAL PROVISIONS

12.1. The Program is not a means of communication and does not provide internet access services.

12.2. The source code, design, database structure, and other elements of the Program are fully owned by the Licensor and are not subject to alienation.

12.3. Any notifications under this Agreement are sent electronically to the addresses indicated during registration unless otherwise provided by law.

13. CONFIDENTIALITY OF STUDENT DATA AND ACCESS RESTRICTION

13.1. The Licensee (coach) independently determines the composition, purposes, and methods of using student data placed in the Program.

13.2. The Licensor ensures that student data added by the Licensee is only accessible to:

• the Licensee themselves;
• Authorized Users designated by the Licensee within their Account;
• authorized employees of the Licensor to the extent necessary for technical support and ensuring the operation of the Program.

13.3. The student data of one Licensee is not disclosed or made available to other Licensees (coaches), except in cases when the Licensee explicitly grants such access through the functionality of the Program.

13.4. The Licensor does not use the Licensee’s student data for its own purposes, including but not limited to:

• disclosure to third parties for commercial purposes;
• use for attracting students to other coaches;
• merging with data from other users outside the purposes of providing services under this Agreement.

13.5. The processing of student data is carried out by the Licensor solely for goals such as:

• providing the functionality of the Program;
• ensuring the security and stability of operation;
• performing obligations under this Agreement;
• complying with legal requirements.

13.6. The Licensor takes reasonable technical and organizational measures to protect student data from unauthorized access, loss, alteration, or distribution.

13.7. The Licensor does not interact and does not initiate interaction with the Licensee’s students to attract them to other users of the Program.

(c) Chess.run, 2026