I've been making puzzles ( mostly criminal and cipher ) for a while for fun but I want to go one one step further and make more standard ( and also more complicated ) puzzles. Is there any set of rules or any book that I can read to achieve this ( and to improve my skills ) ? Thanks!

Suppose you and a friend are playing a game in which you are trying to make four drinking glasses arranged in a square on a table all face up or down. You are blindfolded and seated at a table. Your friend arbitarily arranges the glasses either face up or down initially. During each turn, you can...

This is very simple when I see the answer, but I was not able to answer it(by thinking of single line), So posting for you.

CFOP is my preferred method for speedcubing. Recently I thought of learning ZZ. Although recognition of bad edges was difficult, it made F2L a whole lot easier. However I feel that the basic CFOP-based F2L is much more easier along with the initial EOLine step of ZZ instead of block-building. R...

In the spirit of the classic four fours, I wonder what's the optimal set of four numbers? Your goal is to make the most consecutive integers using four digits of your choice. Pick four: $0,1,2,3,4,5,6,7,8,9$ When constructing an integer: all of your four candidates must be use...

The question is: What should be in the blank box? I tried numbering the letters and letter shifting. Thought it might be telephone coded number. It wasn't. So what do you think it might be? I'm open to any suggestions.

I have a IQ question which gives me very hard to time to figure out. Please help me to find the answer with explanation. It seems so simple...

We have 6 squares that are all the same size. What is the largest number of squares of any size we can make by putting them together? For instance; if we start with 2 squares, we could get 3 squares by overlapping their corners: 1 from the intersection, and 2 from the original squares. I have ...

|US|AA|AS|AL|AB|EB|?| That is the question. It seems like pretty random. I have tried to move letters by 1 but didn't make sense.

I am very old -- hundreds of years Reborn now and then, I have many peers Have thousands with me - you know many of them They all can change-- and yet stay the same Sensible and orderly-- you all know me Believe it or not-- I am inside me. Hope this riddle has not been covered already.

There is the word "BITE" with all capital letters, and upside down. Furthermore, there are several scratches on the word. Can someone please help me with this?

Three great men sit in a room. A King, a Priest and a Rich man. Between them stands a common sell-sword, who has neither crown, gold, nor favor with the gods. Each great man bids the sell-sword to kill the other two. Who lives? and who dies?