Math puzzle: Fix the matchstick equation
Fix the matchstick equation in this math puzzle
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Fix the matchstick equation in this math puzzle
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...
You only use 4 bottons in calculator without use 0 and answer will be 500
Inspiration for this puzzle came from this recent puzzle: Find all digits in abc·de - fgh·ij=0 where each digit 0–9 is used exactly once Rational Thinking Required A, B, C, D, E, F...
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...
Find the lengths of the sides of the square in this math puzzle
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...
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...
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 "...
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...
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...
Get out your timer and number two pencil to see if your arithmetic skills from grade school are still intact.
Find all digits in the equation: $$abc⋅de-fgh⋅ij = 0$$ where: Each letter represents a distinct digit from 0 to 9. No digit is repeated anywhere in the expression. The leading dig...
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?
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...
This puzzle is an original. I have a solution to all parts but there may be better, more elegant, solutions out there and I know from past puzzles that some really, really good lat...
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...
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...
Here it is, hope someone can solve it.
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...
I would like to introduce a puzzle based on an abstract game I am developing / discovering: Cayley Connect is a chess-inspired abstract game where each player has equal numbered pi...
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...
I know what you’re thinking. All you wanna do is to fill the Monthly Topic Challenge’s cross grid in with tangram pieces, am I right? Very well, I’ll sell you some tangrams and at...
I really like puzzles like this. I think this particular format may catch on in the future!
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