Simon Tatham's Portable Puzzle Collection

Introduction This page contains a collection of small computer programs which implement one-player puzzle games. All of them run natively on Unix (GTK), on Windows, and on Mac OS X. They can also be played on the web, as Java or Javascript applets. I wrote this collection because I thought there should be more small desktop toys available: little games you can pop up in a window and play for two or three minutes while you take a break from whatever else you were doing. And I was also annoyed that every time I found a good game on (say) Unix, it wasn't available the next time I was sitting at a Windows machine, or vice versa; so I arranged that everything in my personal puzzle collection will happily run on both those platforms and more. The games The actual games in this collection were mostly not my invention; they are re-implementations of existing game concepts within my portable puzzle framework. Below each image are two links to versions of the puzzle you can play on the web. Licence

http://www.chiark.greenend.org.uk/~sgtatham/puzzles/

Related: Γρίφοι

Can you solve it? The whisky puzzle that will have you on the rocks Hello guzzlers. If you are now abstaining from alcohol, as many end-of-year over-indulgers do, today’s puzzle is for you. Here’s a full whisky bottle. It has a height of 27cm and a diameter of 7cm, and contains 750 cubic centimetres of whisky. It has a dome-like indentation at the bottom like many bottles have. Can You Solve The Horse Grazing Area? Sunday Puzzle – Mind Your Decisions A horse is tied to an outside corner of a 20 foot by 10 foot rectangular barn. What is the maximum area the horse can graze outside, if the rope has length L? Solve for L = 5 feet and L = 25 feet, and find the exact answer. If you are up for a challenge, solve for L = 50 feet. You can solve for the answer to 3 decimal places. Can you figure it out?

Can You Solve The Diluted Wine Puzzle? Famous 16th Century Math Problem – Mind Your Decisions A servant has a method to steal wine. He removes 3 cups from a barrel of wine and replaces it with 3 cups of water. The next day he wants more wine, so he does the same thing: he removes 3 cups from the same barrel (now with diluted wine) and replaces it with 3 cups of water. The following day he repeats this one more time, so he has drawn 3 times from the same barrel and has poured back 9 cups of water.

Tanya Khovanova's Math Blog » Blog Archive » Who Is Left? Centaurs, manticores, and minotaurs roam their planet. Their society is very democratic: any two animals can become sex partners. When two different species mate, their orgasm is so potent that they merge into one creature of the third species. For example, once one centaur and one manticore make love, they are reborn as one minotaur. At the beginning of the year 2016 there were 2016 centaurs, 2017 manticores, and 2018 minotaurs. They mated non-stop and at the end of the year only one creature was left on the planet. The Day After Tomorrow Is Yesterday Riddle – Mind Your Decisions This problem is popular on Facebook and social media. “When the day after tomorrow is yesterday, then today will be as far from Wednesday as today was from Wednesday when the day before yesterday was tomorrow. What day is today?” Can you figure it out? Watch the video for a solution. The Day After Tomorrow Is Yesterday Riddle – Can You Solve It?

Μαθη...μαγικα: Καλοκαιρινό πρόβλημα νικητήριας στρατηγικής.... Καλοκαιρινό πρόβλημα νικητήριας στρατηγικής..... Εσείς και ένας φίλος σας,έχετε ναυαγήσει σε ένα εξωτικό νησί που διοικείται από ένα δεσποτικό εκκεντρικό τύπο.Συλλαμβάνεστε και φυλακίζεστε σε δυο κελιά που δεν έχουν καμιά επικοινωνία μεταξύ τους.Ο διοικητής του νησιού σκοπεύει να σας υποβάλλει σε μια δοκιμασία η όποια θα κρίνει αν θα σας απελευθερώσει. Για κάθε λεπτό μιας ώρας ο καθένας στο κελί του,θα ρίχνετε ένα κέρμα.Οι ρίψεις είναι ταυτόχρονες για εσάς και τον φίλο σας.Μετά από κάθε ρίψη θα κάνετε μια πρόβλεψη (κόρωνα ή γράμματα) για την ρίψη που έφερε ο φίλος σας ,το ίδιο θα κάνει και αυτός. Έτσι και οι δυο σας θα κάνετε 60 ρίψεις κατά την διάρκεια μιας ώρας. Ο διοικητής σκοπεύει να σας κρατήσει στην φυλακή αν έστω και μια πρόβλεψη και των δυο σας για ένα ταυτόχρονο ζεύγος ρίψεων είναι σωστή. Θα σας ελευθερώσει σε αντίθετη περίπτωση.

The Rectangle Ratio, A Surprising Answer – Sunday Puzzle – Mind Your Decisions Start with a square with length 1; label it R1. Create a new rectangle as follows: attach a rectangle of area 1 to the right side and then attach a rectangle of area 1 to the top side. The border of this shape is a new rectangle, R2.

The Friendship Theorem – Sunday Puzzle – Mind Your Decisions In a group of 6 people, you might find that some people are friends with each other on Facebook, or you might find that no one is friends with each other on Facebook. There are many combinations for how people can be friends or not. Show that there is always a group of 3 people in which either: –All 3 people are mutual friends on Facebook. –All 3 people are mutual strangers (no one is friends on Facebook). Watch the video for a solution.