perfect, thank you very much, I was able to solve it, I did not realize that I was missing that

board=[[1,2,3,4,5,6,7,8,9],
[2,3,1,6,4,5,8,9,7],
[3,1,2,5,6,4,9,7,8],
[4,5,6,7,8,9,1,2,3],
[5,6,4,8,9,7,3,1,2],
[6,4,5,9,7,8,2,3,1],
[7,9,8,1,3,2,5,4,6],
[8,7,9,2,1,3,4,6,5],
[9,8,7,3,2,1,6,5,4]]
give it a try

"and each of the nine 3x3 sub-grids (also known as blocks) contain all of the digits from 1 to 9."

[1,2,3,2,3,1,3,1,2] This is not Sudoku

Don't spost solutions in Discourse, thanks.