20 Standard Hard Sudoku Puzzles for Experienced Solvers Hard sudoku on the standard 9x9 grid represents the sweet spot for experienced sudoku players: difficult enough to require genuine problem-solving skill, but not so extreme that solutions become inaccessible. This collection of 20 hard sudoku puzzles is engineered for solvers who have conquered medium-difficulty puzzles and are ready for something genuinely cha…

Channel
GetFreeEbooks
@getfree3books
On this record: Topic · Growth · Engagement · Posts · Cite this entry
201subscribers
-9 since we began measuring on 7 August 2026
Risers and fallers across the register · movement among entries of Under 1,000.
Register entry
| Telegram ID | -1001565465020 |
|---|---|
| Type | Channel |
| Username | @getfree3books |
| Created | Between 1 August 2021 and 28 February 2023 — estimated from Telegram’s id allocation, not measured. How this range is calculated. |
| First recorded | 8 August 2026 |
| Last confirmed live | 11 October 2026 |
| Measurements held | 8 |
| Confirmed unchanged | 2 times, most recently 11 October 2026 |
| On Telegram | t.me/getfree3books |
Topic
Literature — a classification, not a measurement. An on-box language model (Qwen3.6-35B-A3B-FP8, prompt version 1) read this channel’s own recent posts on 24 September 2026 and assigned it the closest of 31 fixed categories, at 90% confidence. This is a model’s judgement about what the channel is likely to be about, not a fact this register measured the way a subscriber count or a view count is measured — it can be revised on a later pass, and it carries no weight anywhere else on this page. How this classification works, and why it has no browse page of its own yet.
Growth
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 1 Oct 2026, 16:38 | 201 | -1 |
| 13 Sept 2026, 01:59 | 202 | -3 |
| 5 Sept 2026, 14:16 | 205 | -1 |
| 29 Aug 2026, 15:57 | 206 | -2 |
| 21 Aug 2026, 20:07 | 208 | -1 |
| 14 Aug 2026, 19:33 | 209 | -1 |
| 8 Aug 2026, 11:03 | 210 | no change |
| 7 Aug 2026, 21:13 | 210 | first reading |
Engagement
20 posts held, back to 20 July 2026 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 1 page of Telegram’s post history, 20 posts per page.
Nothing published in the last 30 days. ERR and ER are rolling 30-day measures, so there is nothing to compute — we hold 20 posts for this entry, the most recent from 7 August 2026. An engagement rate over an empty window would be a number about nothing.
Recent posts
Ditching the Kindle Store? 5 Smart Ebook Alternatives Feeling tied to the Kindle ecosystem? Many readers seek more flexibility, better deals, or a change from Amazon. This guide explores why readers switch and offers five excellent, open alternatives for building your digital library, complete with pros, cons, and pricing. Explore alternatives below. Where will your next ebook come from? https://getfreeebooks.com/d…
15x15 Standard Crossword Puzzles for Experienced Solvers The 15x15 grid is the gold standard of crossword puzzles—the format used by major newspapers and crossword competitions. This collection of 15x15 standard crossword puzzles features the iconic American crossword format with sophisticated vocabulary, clever wordplay, and satisfying fills. Each puzzle demands genuine knowledge and creative problem-solving. Perfe…
10 Insane Hexagon Mazes for Expert Puzzle Solvers Hexagonal mazes are a rare and uniquely challenging variant that most puzzle solvers never encounter. With six directions to navigate instead of the usual four, hexagon mazes multiply the complexity exponentially. This collection of 10 insane hexagon mazes will test your ability to think in six directions and maintain spatial awareness in the most intricate geometric…
A Content Calendar You'll Actually Keep If you've abandoned a content calendar before, the setup probably wasn't the problem. Neither was your discipline. The problem is that nearly every content calendar template — the Notion boards, the editorial calendars, the planning apps — was designed for a team of five and handed to a team of one. This book gives you a stripped-down four-column calendar, a 20-minute weekly p…
Ditching Goodreads? 4 Fresh Alternatives for Readers Feeling stuck with Goodreads? Many readers are looking for new ways to track books, connect with others, and get recommendations. Here are four vibrant alternatives that offer modern interfaces, unique features, and different community vibes. Explore alternatives below. Which platform calls to you? https://getfreeebooks.com/goodreads-alternatives-book-tracking
Mini 4x4 Medium Sudoku Challenge — 20 Puzzles That Pack Maximum Challenge Into a Compact Grid Mini 4x4 sudoku offers a perfect middle ground: challenging enough to demand real logical thinking, compact enough to solve quickly. This collection of 20 medium-difficulty 4x4 sudoku puzzles is ideal for players who want to develop their sudoku skills without committing to hours-long sessions. Download the free PDF below …
Advanced Printable Coloring Book — Complex Designs Perfect for Serious Art Lovers For experienced colorists seeking genuine artistic challenge, this advanced printable coloring book delivers complexity, sophistication, and reward. Pages feature intricate patterns, detailed linework, and artistic compositions that engage both technical skill and creative vision. Each page is a journey worth taking. Download your adv…
Insane Circle Mazes Challenge — 10 Expert-Level Puzzles That Will Test Your Problem-Solving Skills Ready to test your labyrinth-solving skills? This collection of 10 insane circle mazes takes the challenge to the next level. Each maze is intricately designed with concentric circular paths and complex intersections that will demand your full concentration. Perfect for experienced maze enthusiasts and anyone seeking a…
1 Hour Dark Academia Study / Reading Music (Piano & Cello) One hour of candlelit dark academia music for reading, studying, or just drifting into a book. Start listening now:- https://youtu.be/_OwNZRA72Ew
10 Ways to Connect with Books & Readers Offline — Building Real Reading Communities Digital reading is convenient, but something essential is lost when books stay trapped in screens. This article explores 10 practical, proven ways to connect with books and readers offline—from joining book clubs to discovering little free libraries, from attending author readings to volunteering at your local library. Read the full…
Hyper Hard Sudoku Challenge — 20 Expert-Level Puzzles That Will Push Your Logical Reasoning to Breaking Point Hyper-hard sudoku takes logical reasoning to its extreme. This collection of 20 hyper-hard sudoku puzzles is engineered for experienced sudoku masters who have conquered standard difficult puzzles and are hungry for a genuine mental marathon. Each puzzle requires multiple solving techniques, advanced logical…
Showing the 12 most recent of 20 posts we hold for @getfree3books. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.
Cite this entry
A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 1 October 2026 — this entry's latest reading, not the date you are reading this.
“GetFreeEbooks” (@getfree3books), 201 subscribers as measured 1 October 2026. Telegram Register, tgregister.com/channel/getfree3books.
Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.