Complete chess with castling, en passant, promotion, the 50-move and threefold repetition rules. Face a three-level bot or a friend on one device.
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Board game · Chess · 1–2 players (bot or same device) · 5–20 min · free · no download · no sign-up
Chess is the classic battle of two armies on an 8×8 board; the goal is to checkmate the enemy king. This version implements every official rule: castling (short and long), en passant, pawn promotion (choose queen, rook, bishop or knight), stalemate, the 50-move rule, threefold repetition and insufficient-material draws. The bot’s engine was written from scratch for this site: it searches deeply with alpha-beta pruning and quiescence search, and the move generator passed the standard perft verification tests of chess programming — so the rules are exact. The easy bot is quick and careless, normal thinks ahead, hard calculates deep. You can also play two players on one device.
Is the engine correct — does the bot cheat?
The engine was written from scratch for this site and verified with perft tests: on known positions every move count matches exactly (e.g. 197,281 nodes at depth 4 from the start). The bot only uses what is on the board; there is no hidden information.
Which draw rules are implemented?
Stalemate, the 50-move rule, threefold repetition and insufficient material (such as king and bishop versus king) are all automatic draws.
How strong are the bots?
Easy thinks briefly and sometimes plays loosely; normal searches about half a second, hard about 1.5 seconds. The hard bot spots forks and tactical traps several moves ahead.
If you enjoy this one, try: Turkish Checkers, Backgammon, Batak. More: Board Games.
Privacy Notice · Effective and last updated: 17 October 2026 · Permanent address: yozgames.com/en/privacy
Data controller: Bilgin Boğaçhan Ceylan (private individual). YOZGAMES (yozgames.com) is a personal project run by him; there is no company behind it. Contact and requests: iletisim@yozgames.com. A postal address for written requests is provided on request by e-mail. This notice is prepared under art. 10 of the Turkish Personal Data Protection Law No. 6698 (KVKK).
In short: There are no accounts; we never ask for your name, e-mail or phone number. There are no ads, no payments and no cookies. By default your game data stays only on your own device (in your browser's local storage). Only anonymous usage statistics are sent to the server; if you use a progress transfer code or play online, the processing in the table below also applies.
| Feature | Data processed | Purpose | Legal basis | Retention |
|---|---|---|---|---|
| Stored on your device (default) | High scores, level stars, badges, your settings, daily quest streak, saved outfits and room designs, the ghost recording of your best run in the racing game, unfinished sudoku and solitaire games, recently played games, games you marked as favorites, first-visit-of-the-day date marker, a randomly generated device key and your list-generated nickname for the daily leaderboard. No cookies are used | Running the games and remembering your progress | Not sent to the server (unless you create a progress transfer code) | Until you delete it (cleared with your browser data) |
| Daily leaderboard (Sudoku, Silhouette and Solitaire daily modes) | A nickname generated from fixed word lists (e.g. “Purple Turtle 7”), the day’s score and a randomly generated ranking key created on your device. No name, e-mail or free text is collected; the nickname does not reveal identity. A salted digest of the IP address is kept only in server memory for rate limiting and is never written to disk | Showing the day’s score ranking in the daily puzzles | Legitimate interest (KVKK art. 5/2-f): identity-free and an expected feature of the game | At most 2 days (today and yesterday), then deleted automatically and permanently |
| Anonymous usage statistics | Path of the page viewed (without the query string), device type (mobile/tablet/desktop), only the domain of the site you came from, a "first visit of the day" flag, game events (game opened, active play time, first goal reached, played again, came back the next day or within 2–7 days, score card shared, add-to-home-screen accepted/declined, online match played), JavaScript error messages (addresses removed, at most 80 characters). No IP address, cookie or user ID is used | Improving the site and the games, finding bugs | Legitimate interest (KVKK art. 5/2-f) | Only as daily totals, at most 90 days |
| Daily quest counter | Only the number of people who completed the quest that day. To count each device once a day, a salted hash of the IP address is used | Showing how many people completed today's quest | Legitimate interest (art. 5/2-f) | Count at most 90 days; the IP hash is kept only in server memory and never written to disk |
| Progress transfer code (optional, started by you) | A copy of your on-device progress (high scores, level stars, badges, saved outfits and room designs, quest streak); it contains no name or nickname. To prevent codes being guessed, a salted hash of the IP address is kept briefly, only in memory | Moving your progress to another device | Providing the service you requested (art. 5/2-c) | At most 7 days; deleted immediately when the code is first used |
| Online games (Lokma arena; 2-player duels in Head Derby and Cannon Duel) | Game inputs and positions (moves, ball/shell position, score), a random room code for duels. You do not type a name; Lokma gives you a random player name. There is no chat or messaging | Relaying the game between players in real time | Providing the service you requested (art. 5/2-c) | Not stored; held in memory only while the game runs |
| Hosting and security (Cloudflare) | IP address, browser and request details — technically processed to deliver pages, as on any website. A Cloudflare bot-protection script may run on pages for security | Serving the pages, protecting the site against attacks | Legitimate interest (art. 5/2-f) | Per Cloudflare's own retention periods |
| Contact and requests by e-mail | Your e-mail address and what you write | Only to answer you | Legal obligation (art. 5/2-ç) and legitimate interest (art. 5/2-f) | As long as needed; at most 1 year after the matter is closed |
About the statistics counter: Our own counter does not use or store your IP address, and uses no cookie or user ID. The data is sent with the browser's background-send feature (sendBeacon) and kept on the server only as daily totals. So that you are not counted as a "first visit" twice on the same day, a marker containing only the date is stored on your device. Because these totals do not identify anyone, they are largely not personal data.
Score sharing and saving pictures: The "Share" button creates the score card in your browser and hands it to your device's share menu; in Room Order, "📷 Save" (and "📷 Picture" in Outfit Workshop) creates the room or outfit picture in your browser and downloads it to your device. No image or personal data is sent to us, and there is no public gallery. The target score in a shared link is shown only in the browser of whoever opens it. Game music and sound effects are generated on your device.
Recipients and international transfer: The site runs on Cloudflare, Inc. (USA) infrastructure for hosting, content delivery, security and server processing. The server data above may therefore also be processed in Cloudflare data centres outside Turkey; Cloudflare acts as a data processor for these services. This transfer falls under KVKK art. 9; write to iletisim@yozgames.com for information on the basis of the transfer. Data is not shared with anyone else, not sold and not used for advertising.
Your rights (KVKK art. 11): to learn whether your personal data is processed; to request information if it is; to learn the purpose of processing and whether it is used for that purpose; to know the third parties it is transferred to in Turkey or abroad; to request correction if it is incomplete or wrong; to request deletion or destruction; to request that corrections and deletions be notified to those third parties; to object to an outcome against you that results solely from automated analysis; and to claim compensation if you suffer damage from unlawful processing.
How to make a request: Send an e-mail to iletisim@yozgames.com. A postal address for written requests is provided on request by e-mail. We do not ask for ID documents. Requests are free of charge and answered within 30 days at the latest. No records linked to you are kept on the server; you can delete the game data on your device yourself by clearing your browser data. If you are not satisfied with the answer you may complain to the Turkish Personal Data Protection Board.
Children and parents (short and simple): There are no accounts, names, chat, messaging or ads on the site. The site does not ask children for any personal information. Online opponents get random names. Never share your progress transfer code. Parents can write to iletisim@yozgames.com with any questions.
Changes: When this notice changes, the date above is updated; important changes are announced on the home page. If a feature that involves ads or identity is ever added, this notice will be updated beforehand.
Terms of Use · Effective and last updated: 17 October 2026 · Permanent address: yozgames.com/en/terms
The games on YOZGAMES are free and provided "as is"; there is no guarantee that they will run without interruption or errors.
Unless stated otherwise, the game code, graphics, sounds and texts created for YOZGAMES belong to Bilgin Boğaçhan Ceylan and may not be copied, modified or published on another site or app without permission. Third-party components are subject to their own licences. You are welcome to link to the site.
Fair play: Cheating or using automation (bots/scripts) in online games, and putting excessive load on the server, is prohibited. There is no chat or messaging in the games.
Changes: These terms may be updated; the current version is always on this page and the date above changes. Important changes are announced on the home page. Turkish law applies to disputes.
The YOZGAMES game code, the code-generated game visuals and the programmatic sound effects are original work. The third-party fonts and other third-party elements used (e.g. emoji characters provided by the operating system) are subject to their respective licenses.
Fonts (SIL Open Font License 1.1):
Press Start 2P — Copyright 2012 The Press Start 2P Project Authors, Reserved Font Name "Press Start 2P". The file from the official distribution is embedded unmodified.
Chakra Petch — Copyright 2018 The Chakra Petch Project Authors. Embedded as a subset of the official distribution files for web display under OFL 1.1.
License texts: yozgames.com/licenses.txt (full copy of the OFL text for both fonts) · openfontlicense.org
Flag images: The country flag SVG files in Daily Four are taken from the flag-icons project (MIT license; full text in licenses.txt). The country flag designs themselves are public domain.
Map/boundary data: Country and continent outlines in the Silhouette game come from Natural Earth (public domain). The 81 Turkish province boundaries are derived from the geoBoundaries project's OpenStreetMap-based data — © OpenStreetMap contributors (ODbL / CC BY-SA 2.0); details in licenses.txt.
YOZGAMES is an independent, personal project. Data controller: Bilgin Boğaçhan Ceylan (private individual).
For feedback, suggestions, bug reports and data protection requests:
iletisim@yozgames.com
Requests are free of charge and answered within 30 days at the latest. A postal address for written requests is provided on request by e-mail.