New posts in Puzzle

Solving the cryptarithm "THE+BEST+SYSTEM=METRIC"

Find the integer : $x \times 29$ and delete the first and last digit, it produces $x$

Does it exist a way how to find the ways to get from one point to another when certain points must be avoided in a grid?

How to know if a 8 puzzle is solvable

Finding all integer solutions to $A\times B\times C = A! + B!+ C!$ with $0\leq A, B, C\leq 9$ without trying every combination?

A problem regarding the hands of a clock

Christmas Cryptarithm: "HERES+MERRY+XMAS=READER"

Probability question about meeting people

Could you generate any positive number given only a few specific operators and operands?

Solving a "twisty puzzle" on $S_{20}$