Eulero 3x3 #2 Hard

Puzzles Eulero 3x3 #2 Hard play free online

Other names - Greco-Latin square, Eulero square, Eulero.

This puzzle, in fact, is two Latin squares “nested” into each other, and is named for the famous mathematician Leonard Euler.

The task is to enter numbers and letters in the puzzle cells according to the rules set forth below.

The rules of the “Euler Square” puzzle:

Each cell contains one letter and one number.
In each row and each column, each letter and each digit occurs only once.
Each combination of letters and numbers in the puzzle occurs only once.
Available sizes - 3x3, 4x4, 5x5, 7x7.