# graycell.ru - **Website:** - **Primary alias:** `graycell.ru` ## Description "Серые клеточки" is a leading provider of free printable and online crossword puzzles, Sudoku, Japanese puzzles, and other brain teasers. With a dedicated crossword search engine and professional puzzle creating services, "Серые клеточки" is your go-to destination for challenging and engaging puzzles. Whether you prefer to solve puzzles online or enjoy the tactile experience of printed puzzles, "Серые клеточки" has something for everyone. Founded by Alexey Piskunov, a mathematician, systems programmer, and linguist with a PhD in technical sciences, "Серые клеточки" has over 20 years of experience in the puzzle industry. With over 100,000 puzzles published in more than 350 different publications in Russia and beyond, you can trust "Серые клеточки" for high-quality, mind-bending puzzles. For puzzle enthusiasts, "Серые клеточки" is the ultimate destination for brain-stimulating entertainment. Contact us today to order customized puzzles or to learn more about our services. ## Industries - 🎮 Games - 🎮 Puzzles and Brainteasers _(under Games)_ - 📊 Business and Consumer Services - 📊 Publishing and Printing _(under Business and Consumer Services)_ ## Logos & icons - logo _(primary)_ — PNG, SVG — [download](https://cdn.brandfetch.io/id2uhuQL-3/w/820/h/137/theme/dark/logo.png?c=1bxid64Mup7aczewSAYMX&t=1719688922265) ## Colors | Name | Hex | Theme | | --- | --- | --- | | Cerulean | #00a0e3 | accent | | Deep Sea Green | #0a4b59 | dark | | Blizzard Blue | #abdbef | light | ## Fonts - Calibri — asset _(custom)_ --- _Source: _ _See [/llms.txt](/llms.txt) for a full list of agent-readable pages, and [/auth.md](/auth.md) for how agents authenticate._