PlaySudoku.us
Hard · Puzzle #739
5
7
2
4
8
9
1
1
6
8
7
9
3
8
1
7
5
6
9
2
8
4
7
8
6
3
"We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically." — Neil deGrasse Tyson
"We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically." — Neil deGrasse Tyson
Backtracking — the algorithm most computers use to solve Sudoku — is a form of depth-first search with pruning.
Backtracking — the algorithm most computers use to solve Sudoku — is a form of depth-first search with pruning.