This puzzle was suggested by jwezorek in Three triangles passing through every dot of a 5x5 grid 25 dots are drawn as a 5x5 regular square grid. Can you draw 4 non-right angled triangles that pass through every dot? The triangles cannot have a right angle and their corners must lie on the dots.

My Puzzle is as follows- Once, I said to my friend that, "In 1932 I was as old as the last two digits of my birth year. When I mentioned this interesting coincidence to my grandfather, he surprised me by saying that the same applied to him too. I thought that impossible...." "Of course that's im...

Two persons, one standing at the door of his house and the other walking up and down the pavement, were counting passers-by for a whole hour. Who counted more? Source: - From here.

It's simple. Find the shortest string of digits (0123456789, allowed to have leading 0s) where all digit pairs 00, 01, 02, 03... 96, 97, 98, 99 appear as substrings. Tiebreaker is lexicographically earlier string.

Who is the person whose picture appeared in films the most? Clarifications: it's a real person, living or dead. only regular feature films count. any number of appearances in a single movie counts as 1. Creator of this question and I have a bet on few bucks. I have 7 days (6 left) and 100 tries...

So, I've prepared another AnaCross puzzle. The rules are exactly the same: At the end of each row is a pool of letters; those letters are the letters that go in that row of the crossword. Normal crossword rules apply, so every line of letters makes a real, English word; there are no proper nouns ...

Initially we start with a total of 22 beads. Then we add 1 bead like this... Total bead count 23. Continuing this way, we add 6 beads, with total number 28... I understand 1 bead is being removed from one row and is being adjusted accordingly. But how do we generalize this?

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