Here are the rules: A Categorically Deceiving word is one whose letters can be mixed around to form a new word which belongs to the same category as the original (e.g. red and green belong to the same category, colors). "Good" matches are when there's no question about whether the second word f...

This question from last year (which in itself was anticipated on CSE two years prior) has a complete switchup of all non-pawn pieces on the board. The idea is to optimize the amount of moves needed to reach the given diagram. In that puzzle, all of the pawns move to allow for fast switches. But ...

I found some online number puzzle as below: My guess was 436 (go up by 118 again, as the left & right go up by 1) but apparently it was incorrect. I cannot see any other patterns, any ideas?

This is a bicolour masyu puzzle. Instead of making one continuous loop, the goal is to make two separate loops, one blue and one red. The coloured circles must be used for the loop of the same colour, whereas black circles can be used for either colour.

Hidden in the ciphertext below is a user name from puzzling.stack.exchange. Who is it? The intended answer uses all of the ciphertext, not just a snippet that happens to match somebody in some way. TVOZOMMCYOTVOBEAUJJILLEXVRVTHFGVRUTXDLHMKDSBDLYHDMI CFDMWGFBKICHTBEFZFAAHGGWKLMOBKMODICEEIEGMBUIJ...

Grandpa with his mischievous smile said: "If zero belongs to One And two belongs to Four Twenty seven belongs to Seven Then what belongs to Three?"

Without me, There would be no vowel. Though consonants would exist, The alphabet thrown in the bowel. But, now, another problem occurs, For bowels exist not, When, Death, I am yours. But, worry not, For without me there is no person. And surely, nobody would be foolish eno...