New posts in Matrix

Validating a Battleship board

The matrix has U

Find the number of n-by-n (-1, 0, 1) matrices with zero permanent as quickly as possible

An array battle with odd secret powers

Overlapping String-Blocks

Binary Numbers Magic Trick

Slither Like a Snake

Black Hole challenge from codewars

Spot all (anti)diagonals with duplicated values

Matrix Jigsaw Puzzles