Top new questions this week:
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In the puzzle game Pipes, a space-filling tree of pipes (which may have either one, two, or three neighboring connections each, but not four) is scrambled by a series of tile rotations, and the goal ...
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I've always been fascinated Conway's Game of Life, but one thing that always bugged me was the idea that a cell could live forever. There are alternate rulesets (e.g., Generations) which address the ...
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Divide a rectangular sheet of paper with a side length of 2 × 4 into eight 1 x 1 unit squares
and label them as shown in the sketch.
Then fold the sheet of paper along the boundaries of the square so ...
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A $3 \times 3$ grid $G$ is filled with every number from $1$ to $9$. Now a new $3 \times 3$ grid $H$ is formed, such that $H_{ij}$ is the number of neighbors of $G_{ij}$ that are greater than $G_{ij}$....
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An 8x8 Sudoku where you technically only have to figure out 32 cells! Twice Half the cells, double the clues!
Penpa Link
Rules
Normal Sudoku rules apply. Values are 1-8. Boxes are the 4x2 regions
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Across
1. Singer Collins is performing leads for Prince (6)
5. Broken spine leads to aches (5)
10. Say, 33 across and Cuiabá's northern tip, described by excellent lyric poems (9)
11. Predecessor to ...
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The 16 words below may be partitioned into 4 groups of 4 connected words.
The resulting four words also have a connection which is a seven-letter word.
ONE
POTATO
PINK
FOUR
CORN
RANCH
SOY
SINGLE
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Greatest hits from previous weeks:
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I am a computer’s nightmare, but a programmer’s best friend.
I am both the cause of a problem and the source of its resolution.
What am I?
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I am a Seven Letter word.
I like Mornings
If you remove my first letter you can drink me.
If you remove my first and second letters, you may not like me
If you remove my last letter, you will see me ...
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I have a rubik cube, which always have two swapped edges in the last layer. No matter which color I start with, there are always two edges in the last layer which remained swapped with each other.
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This is similar to the "Four fours" puzzle, but using the digits 2, 0, 1 and 7.
Rules:
Use all four digits exactly once
Allowed operations: +, -, x, ÷, ! (factorial), exponentiation, square root
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How is 29 - 1 = 30?
If also
14 - 1 = 15
11 - 1 = 10
9 - 1 =10.
Hint:
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I can get to 4096 max. There are videos on youtube of guys making it to 8192. What is the theoretical maximum limit on this?
PS: if you haven't played this, here is the link to addiction.
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What is correct answer for these two IQ puzzles and why?
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Can you answer these questions?
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Mary met her friend Jenny in the library. They gossiped about various things and then each chose a book and went to separate corners of the library and sat down to read. After half an hour Jenny went ...
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I previously created a combined slitherlink and sukoku puzzle, but I was unsatisfied because the grid was smaller then a regular sudoku. So I made another, larger one.
Below is a 9 by 9 grid. This is ...
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I am uncommon,
But a worthy goal.
Rare but abundant
In hill and hole.
Who am I?
You may already know the answer, so the task is not to answer the riddle per se, but to solve the following 'What is a ...
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