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  • Please help me fill my number square.
  • Only you use 4 bottons in calculator without use 0 and answer will be 500 [closed]
  • Adjacent Figures

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puzzling.stackexchange.com /1 month ago

Please help me fill my number square.

I don't like to cross words with people, I would rather cross numbers with them. Have fun! 1A: Baby's first numbers 4A: Kaprekar's favorite 8A: Baking some pie 10A: Abundent and Sp...

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puzzling.stackexchange.com /3 weeks ago

Only you use 4 bottons in calculator without use 0 and answer will be 500 [closed]

You only use 4 bottons in calculator without use 0 and answer will be 500

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puzzling.stackexchange.com /3 weeks ago

Adjacent Figures

To get the answer, you have to do something. What do you have to do?

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hardcoregaming101.net /1 month ago

Calcolo!

Calcolo refers to itself as “Ochimono Shooting” (“Falling Object Shooting”). The closest point of comparison is ADK’s Twinkle Star Sprites, but while that was a shoot-em-up with so...

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scientificamerican.com /1 month ago

Math Puzzle: Go to great lengths

Find the lengths of the sides of the square in this math puzzle

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puzzling.stackexchange.com /2 weeks ago

Negative Zero Minus One

This is a easy puzzle for a solver with reputation less than 1000. I remember back in the days when I was studying math on AoPS, I came across this user called negativezerominuson...

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puzzling.stackexchange.com /1 month ago

Wait, where's my 123456789?

Can you solve my 9 by 9 crossword puzzle? Numbering is standard, and numbers are clued iff they are at least 2 digits long. Across 01. D08 + 2 03. D06 - 2 05. A07 + 2 07. Prefix of...

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puzzling.stackexchange.com /1 month ago

Make 1-10 with 1, 2, 3, 4... but the 1s are lying!

It looked like a normal formation-of-numbers question: Use one copy of each digit 1, 2, 3, and 4 in any order to make expressions that evaluate to the integers 1-10. Allowed opera...

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puzzling.stackexchange.com /3 days ago

144 = 72 + 72, and no factor crosses between the figures

Write a distinct positive integer in each of the eight circles, so that the four in each figure sum to 72. Any two of the eight circles are joined by a line exactly when their numb...

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puzzling.stackexchange.com /1 month ago

Crossing sums, all different

This puzzle is part of Monthly Topic Challenge June 2026: Same grid, different execution. Can you place numbers 1 to 12 in this grid in such a way that all vertical and horizontal...

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puzzling.stackexchange.com /4 weeks ago

Logically deduce the values of A–F, where each letter is a different integer from 1–10.

Letters A-F are unique integers from 1-10 inclusive. Can you determine the solution through a logical sequence that uses forced deduction chains, and avoids hypotheticals such as "...

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puzzling.stackexchange.com /1 month ago

A matchstick equation... or is it?

Make a correct statement This puzzle is my own creation, so there may be multiple solutions. I know of one but will consider any answers on their own merits. Here is an incorrect s...

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puzzling.stackexchange.com /1 month ago

Turning the tables... but how?

Miss Plum's problem Miss Plum (not a real person) works as a primary school teacher's assistant. One day, she was asked to finish putting some posters on the wall. So far, the teac...

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puzzling.stackexchange.com /1 month ago

I have a grid of numbers, but what game was I playing?

I'm all primed to start the game, but I forgot what we were supposed to be playing. Can you folks help me get this sorted out?

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puzzling.stackexchange.com /1 day ago

I made gpt-5.6-sol create this original multilayer puzzle, then tested it against several reasoning models—and none coul...

The Last Margin I challenged GPT-5.6-sol to create an original, highly difficult multilayer puzzle. I have tested it against several AI reasoning models, but none has produced a va...

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puzzling.stackexchange.com /1 month ago

Shakashaka: Cross products

This puzzle is part of Monthly Topic Challenge June 2026: Same grid, different execution. Mark some cells half-shaded along a diagonal (one half white, one half black), so that ev...

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puzzling.stackexchange.com /1 month ago

Ditloids - riddles with letters and numbers.

A bit of background (this is not part of the puzzle): in 1981 William Shortz published a puzzle in Games Magazine called "Equation Analysis Test". The puzzle style grew in populari...

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puzzling.stackexchange.com /4 weeks ago

Nice geometry puzzle of squares, triangle and circle.

This is not an original, I saw it today (link given in spoilers - also shows solution, so really is a spoiler...) Squares, triangle and circle puzzle This puzzle was shown to me to...

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puzzling.stackexchange.com /1 month ago

Akari: Cross-examination

This puzzle is part of Monthly Topic Challenge June 2026: Same grid, different execution. This is an Akari ('Light Up') puzzle with a twist. Rules (adapted from Nikoli): Place l...

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puzzling.stackexchange.com /1 month ago

The coloured map puzzle

This is part of the Monthly Topic Challenge: Obscure Observances The coloured map puzzle I work at a small delivery company (not a true story) that has five warehouses. Recently, I...

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puzzling.stackexchange.com /2 weeks ago

Day: an enigmatic puzzle

This puzzle is part of Monthly Topic Challenge July 2026: Obscure Observances. Move a square in the right column up by one. What Braille letter is this? Rotate the image so the...

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puzzling.stackexchange.com /1 week ago

A massive problem... of sorts

I found this puzzle while searching for something totally unrelated (author given under a spoiler at the end). It is a rather nice puzzle (in my opinion) and possibly one to let so...

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puzzling.stackexchange.com /1 month ago

A twisted cryptic crossword puzzle!

I've enjoyed cryptic crosswords for many years (never been too good at them, but that is another matter). I also like numbers, patterns and puzzles. This is my first attempt to com...

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puzzling.stackexchange.com /1 month ago

From Cat to Math

How did I go from Cat to Math? Explain your reasoning. $$MO(W)=E$$

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hardcoregaming101.net

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puzzling.stackexchange.com

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