Legal Notice and Privacy Policy
Last updated: 16 April 2026
1. Website Owner
In compliance with applicable Spanish laws on information society services, the owner of this website is:
| Field | Details |
|---|---|
| Full name | Sergei Andronov |
| Trade name / project name | CODE4WIN |
| Tax ID (NIF/NIE) | Z1308614B |
| Registered address | av. Fernando Abril Martorel 28, A-1-1 Valencia, Spain 46026 |
| Contact email | code4win@fastmail.com |
| Activity | Development and operation of an online website / browser game |
2. Purpose of the Website
This website is intended to provide information about the project, allow users to access and use the service, and, where applicable, create and manage user accounts related to the website and its features.
3. Conditions of Use
Access to and use of this website confer the status of user and imply full acceptance of this Legal Notice from the moment of access.
The user agrees to use the website, its contents, and its services in accordance with the law, good faith, public order, and these terms.
The user must not:
- Use the website for unlawful or fraudulent purposes.
- Interfere with the operation or security of the website.
- Attempt to gain unauthorized access to accounts, systems, or data.
- Copy, distribute, modify, reverse engineer, or exploit website content or software except where permitted by law or with prior written authorization.
4. Intellectual Property
All contents of this website, including but not limited to source code, text, design, graphics, logos, icons, images, interfaces, databases, and other materials, are owned by Sergei Andronov or used under a valid license.
Users may not reproduce, distribute, transform, publicly communicate, or otherwise exploit any content of the website without prior written authorization from the rights holder, except where permitted by law.
5. External Links
This website may contain links to third-party websites. The owner is not responsible for the content, policies, or practices of those external websites, nor for any damages that may arise from their use.
6. Disclaimer of Liability
The website owner makes reasonable efforts to ensure that the information and services offered on this website are accurate, up to date, and available.
However, the owner does not guarantee:
- Continuous availability of the website.
- The absence of technical errors, interruptions, or security incidents.
- The complete absence of viruses or other harmful elements introduced by third parties.
To the maximum extent permitted by law, the owner shall not be liable for damages resulting from the use of the website, service interruptions, technical failures, or unauthorized access by third parties.
7. User Accounts
Where user registration is available, users are responsible for maintaining the confidentiality of their login credentials and for all activity carried out under their account.
The website owner reserves the right to suspend or terminate accounts that violate these terms, applicable law, or the proper functioning of the service.
This service is not intended for users under the age of 14. By creating an account, the user confirms that they are at least 14 years old, in accordance with Article 7 of the Spanish Organic Law 3/2018 (LOPDGDD).
8. Privacy and Personal Data
Any processing of personal data carried out through this website shall be governed by the Privacy Policy, which forms an integral part of the legal information made available to users.
8.1. Data Controller
The data controller responsible for processing personal data is Sergei Andronov, whose contact details are provided in section 1 of this document.
8.2. Data We Collect
We may collect the following personal data:
- Registration data: email address, nickname, and password (stored in hashed form) provided when creating an account.
- Usage data: information about how you interact with the service, including code submissions, level progress, and game runs.
- Technical data: IP address and browser data, logged for security and diagnostic purposes.
Additionally, your code is auto-saved in your browser's local storage for convenience. This data is stored only on your device and is not transmitted to our servers.
8.3. Purpose of Processing
Personal data is processed to:
- Manage the user's account and provide access to the service.
- Save game progress and game run history.
- Execute user-submitted code on our servers in a secure, isolated environment for game result verification.
- Ensure the security of the service and prevent misuse.
- Comply with applicable legal obligations.
8.4. Legal Basis
Processing is based on:
- Contract performance: processing is necessary to provide the service requested by the user.
- Legal obligation: where processing is required by applicable law.
- Legitimate interest: to ensure the security and proper functioning of the service.
8.5. Data Retention
Personal data will be retained for as long as the account remains active. Users may request the deletion of their account and associated data at any time by contacting the email address provided in section 1.
8.6. Third-Party Service Providers
We use the following categories of third-party service providers that may process personal data on our behalf:
- Hosting provider: to store and serve the website and its data.
- Google Analytics: to collect anonymized usage statistics (see section 9).
- Google OAuth: to enable sign-in via Google accounts (see section 8.9).
These providers act as data processors under appropriate data processing agreements in compliance with the GDPR.
8.7. User Rights
Under the General Data Protection Regulation (GDPR) and applicable Spanish law, users have the right to:
- Access: request a copy of the personal data held about them.
- Rectification: request the correction of inaccurate or incomplete data.
- Erasure: request the deletion of their personal data.
- Objection and restriction: object to certain processing or request its restriction.
- Portability: receive their data in a structured, commonly used format.
- Withdrawal of consent: where processing is based on consent, withdraw that consent at any time without affecting the lawfulness of prior processing.
To exercise these rights, contact: code4win@fastmail.com
If you believe the processing of your data infringes applicable regulations, you have the right to lodge a complaint with the Spanish Data Protection Agency (AEPD) at www.aepd.es.
8.8. International Transfers
Personal data is stored on servers located in the European Union. Data collected by third-party services used on this website (such as Google Analytics and Google OAuth) may be transferred internationally in accordance with those providers' data processing terms and appropriate safeguards, including Standard Contractual Clauses (SCCs). No other international data transfers to third countries are carried out unless required by law.
8.9. Data Accessed via Google Login
When you sign in using Google, we access the following data from your Google account:
- Google Account Email Address
- Full Name (as provided by your Google profile)
- Profile Picture / Avatar URL
No other Google user data is requested or accessed.
8.10. Data Usage and Processing
Your Google account email address, full name, and avatar are used exclusively for the following purposes:
- Account creation — to set up your CODE4WIN user account.
- User authentication (login) — to verify your identity when you sign in.
- Profile display — to show your name and avatar within the application.
This data is not used for any other purposes, including marketing, advertising, or profiling.
8.11. Data Storage and Sharing
Your email address, name, and avatar URL obtained from Google are stored securely in our database solely to maintain your user account and enable authentication.
This Google user data is not sold or shared with third parties.
9. Google Analytics
This website uses Google Analytics, a web analytics service provided by Google LLC, to track user interaction and website traffic. Google Analytics collects usage data (such as pages visited, session duration, and general location) through cookies and shares this data with Google. For more information on how Google processes this data, please refer to Google's Privacy Policy.
10. Google API Services Compliance
CODE4WIN's use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements.
11. Cookies
This website uses the following cookies:
Technical cookies (strictly necessary):
| Cookie | Purpose | Duration |
|---|---|---|
_code4win_session |
Maintains the user's authenticated session | Session (expires on browser close) |
These cookies are essential for the operation of the service and do not require consent.
Analytical cookies (Google Analytics):
| Cookie | Purpose | Duration |
|---|---|---|
_ga |
Distinguishes unique users | 2 years |
_ga_* |
Maintains session state | 2 years |
Analytical cookies are set only with the user's consent. You may withdraw your consent at any time through the cookie banner or by clearing your browser cookies. No advertising or third-party tracking cookies are used.
12. Modification of this Legal Notice
The owner reserves the right to modify this Legal Notice at any time in order to adapt it to legal, technical, or operational changes. The updated version will be published on this website.
13. Applicable Law and Jurisdiction
This Legal Notice shall be governed by Spanish law.
Unless otherwise required by applicable consumer protection rules, any dispute arising in connection with this website shall be submitted to the courts and tribunals of Valencia, Spain.