Puzzle Post, a puzzle book by e-mailBratislavaIssue 1, October 2026
On the first of every month you get one new book of 100 logic puzzles as a PDF made for an e-ink tablet, and every puzzle in it has exactly one solution.
Issue 1 is dated October 2026: 100 puzzles from ten kinds, ten of each, in three page sizes (157 x 210 mm for e-ink, A4 and US Letter). The contents page links to every puzzle, every puzzle links to its solution and every solution links back.
VAT included, nothing added at checkout. One new issue on the first of every month, cancel whenever you like.
Write with the pen on an e-ink tablet, or type into the form fields on a computer (Adobe Acrobat Reader, Preview, Firefox). Page 1 of every file is the cover, an AI-generated picture commissioned by the publisher; every other page is typeset by our own program.
There is no account to make and no app to install. The whole product is a PDF and an e-mail with the link to it.
Card or the payment methods Stripe offers in your country. The subscription renews every month, or every year if you took the yearly one.
Within a few minutes an e-mail arrives with the download links for the current issue, in all three page sizes. Every following issue arrives the same way on the first of the month.
Send to Kindle for the Scribe, the reMarkable app on desktop or phone, or a USB cable and the device folder for Boox. It is the same as adding any other book.
If a subscription is not what you want, buy the October 2026 issue once and keep it. The same 100 puzzles, the same three files and no renewal. The links appear on this page right after the payment and go to your e-mail as well.
4.90 €one payment, VAT included
The same 4.90 € as on Etsy. A single issue is a one off purchase: it does not renew and the next issue is not sent to you.
Parish bulletins, club newsletters, care home activity sheets and school papers can use a puzzle page from Puzzle Post. Puzzle Post Bulletin sends one printable puzzle every Monday, 80 mm wide to fit one column, with its solution, licensed for one publication of yours in as many copies as you print. It costs 19 € a month, VAT included, or 39 € a month for three puzzles a week.
The terms, the sizes, a free sample sheet and both plans with their monthly and yearly prices are on a page of their own.
The difficulty rises inside each kind: three easy, four medium, three hard. The rules of every kind are printed inside the issue, on the page that opens that kind.
The page at the top of this page is a real page out of Issue 1, exactly as it looks on the tablet. The free sample is 10 puzzles taken from all three difficulty levels, so you can see the hard end before you pay.
Each puzzle is built by a program that also solves it. The solver is asked to find two solutions; the puzzle is kept only if it finds exactly one, and only if it reached that one by applying rules, never by putting in a number to see whether the grid falls apart later.
The program also checks that no two puzzles in an issue are the same and that no two have the same answer, and it re-derives every clue from the printed answer to catch a drawing mistake. Puzzles that went into an issue are struck off the register, so a later issue cannot repeat them.
Everything is drawn as vector line work, so the lines stay sharp on the tablet screen and on paper. There is no grey, which is what makes a grid hard to read on e-ink.
In the Stripe customer portal, where you log in with the e-mail address you paid with. You can cancel or change the subscription at any time and it stays active until the end of the period you already paid for. The issues you have already downloaded stay yours.
The e-ink file is 157 x 210 mm, the 3:4 shape of a large e-ink screen, so a page fills the display of a reMarkable 2, a reMarkable Paper Pro, a Kindle Scribe or a Boox reader of that size without bars at the sides. Every issue also comes as A4 and as US Letter, which fit a tablet, a phone or a printer.
Being honest about the limit of that claim: the page sizes and the links are measured in the finished PDF by our own check, but we have not tested an issue on a physical reMarkable, Kindle Scribe or Boox. Nobody here owns one. If a page looks wrong on yours, write to support@arling.sk with the device name and we will fix the file.
Yes. Every issue includes an A4 file and a US Letter file with the same 100 puzzles, black and white, made to be printed at 100 percent or actual size rather than fit to page. The solutions are at the back.
No. There is no account, no password and no app of ours. After paying you get an e-mail with download links, and each following issue arrives as another e-mail. What we keep is the e-mail address Stripe gives us for the subscription, so we know where to send the next issue.
The first issue arrives right after you pay, whichever day of the month that is. Every next issue is sent on the first day of the month. If an e-mail does not arrive, write to support@arling.sk and we will send the links by hand; we would rather do that than have you wait.
Link (Sold through Link, LLC), the seller (merchant of record) at the Stripe Managed Payments checkout, e-mails a receipt for every payment, including every renewal. The checkout has no field for a company VAT number; the receipt uses the name and address entered at checkout. If you are buying for a company and need the document made out to it, write to support@arling.sk before you pay and we will tell you exactly what the document will show, rather than promise it here.
Yes. If you buy as a private person, you can withdraw within 14 days of paying without giving a reason, for the subscription and for the single issue alike: an e-mail to support@arling.sk is enough, and we send the money back within 14 days to the card you paid with. How to do it, with a form you may but need not use, is on our withdrawal page, which is in Slovak; an e-mail in English is just as good.
If a file is broken, a puzzle is wrong or an issue never arrived, write to support@arling.sk at any time and we will fix it or send the money back. The sample is free and comes from all three difficulty levels, so you can see the hard end before paying.
No. The puzzle books are ten one off books of a single kind each, made to be printed on paper. Puzzle Post is a subscription, one mixed issue a month, sized for a tablet screen first. The puzzles do not overlap: every puzzle that goes into a book or an issue is struck off the register and never printed again.