Place numbers in the grid so that each row and each column contain all the numbers {1,2,3,4,5} (each exactly once) and the sums of numbers in the outlined regions are all different.
Attribution: momath.org
Diary of a Wimpy Kid is an American children's book series and media franchise created by American author and cartoonist Jeff Kinney. The series follows Greg Heffley, a middle-schooler who illustrates his daily life in a diary (although he insists that it is a journal).
Kinney spent eight years working on the first book before showing it to a publisher. In 2004, Funbrain and Kinney released an online version of Diary of a Wimpy Kid. The website made daily entries from September 2004 to June 2005. The online version had received almost 20 million views by 2009. Nonetheless, many online reade...
I designed this riddle for my now-wife in November 2019. The clues gradually become easier, offering more guidance toward the solution as you progress. I intentionally made the riddle challenging and, at times, frustrating, but I'm sure this won't stop experienced riddle-solvers :).
Originally, I...
@Jafe Oh wow, ha! That's very cool :) Even if it's only temporary - it's only one point after all! It's been an incredibly fun and educational 5-and-a-bit years for me so far, and I've got plenty of ideas for more puzzles currently in the mix. I'm hoping to stick around a while longer, though not necessarily at #1 - I guess I should make the most of the view while I am here... #screenshot
Alice and Bob go out for dinner and the restaurant bill is $100$€. Beforehand, they had agreed to evenly pay half of the bill, but suddenly Alice is in a bit of a generous mood and offers Bob a probabilistic opportunity to pay less than half.
Alice tells Bob: I have a $100$bit number in mind (i.e...
It is known that an ordinary Sudoku with a unique solution must have at least 17 clues. A clue is a statement that a particular cell $(i, j)$ must contain a particular value $k$.
But we could also consider "negative clues". A negative clue is a statement that a particular cell $(i, j)$ does not c...