The Solution to the Easy Puzzle [0 6 0 0 7 0 0 8 0] [ ] [5 8 0 0 2 0 0 0 3] [ ] [0 0 3 9 0 8 6 0 0] [ ] [7 0 1 5 9 2 4 0 8] [ ] [0 0 0 3 0 6 0 0 0] [ ] [2 0 6 8 0 7 9 0 5] [ ] [0 0 7 1 0 9 8 0 0] [ ] [3 0 0 0 6 0 0 0 4] [ ] [0 1 0 0 0 0 0 2 9] is [9 6 2 4 7 3 5 8 1] [ ] [5 8 4 6 2 1 7 9 3] [ ] [1 7 3 9 5 8 6 4 2] [ ] [7 3 1 5 9 2 4 6 8] [ ] [8 5 9 3 4 6 2 1 7] [ ] [2 4 6 8 1 7 9 3 5] [ ] [4 2 7 1 3 9 8 5 6] [ ] [3 9 8 2 6 5 1 7 4] [ ] [6 1 5 7 8 4 3 2 9] It took , 0.257, second The Solution to the Medium Puzzle [0 0 5 0 9 0 1 0 0] [ ] [1 0 0 5 0 7 0 0 0] [ ] [0 2 9 0 4 0 7 6 0] [ ] [5 0 0 2 0 3 0 0 1] [ ] [0 0 1 0 0 9 6 0 0] [ ] [4 0 0 7 0 6 0 0 8] [ ] [0 4 3 0 2 0 5 1 0] [ ] [0 0 0 9 0 5 0 0 0] [ ] [2 0 6 0 0 0 9 0 0] is: [6 7 5 8 9 2 1 3 4] [ ] [1 3 4 5 6 7 8 2 9] [ ] [8 2 9 3 4 1 7 6 5] [ ] [5 6 7 2 8 3 4 9 1] [ ] [3 8 1 4 5 9 6 7 2] [ ] [4 9 2 7 1 6 3 5 8] [ ] [9 4 3 6 2 8 5 1 7] [ ] [7 1 8 9 3 5 2 4 6] [ ] [2 5 6 1 7 4 9 8 3] t2 := 0.291 It took , 0.291, second The Solution to the Hard Puzzle [7 8 0 0 6 0 5 0 0] [ ] [3 0 0 0 5 0 9 0 0] [ ] [0 0 9 4 0 0 0 6 0] [ ] [2 0 0 9 0 0 0 5 0] [ ] [0 1 0 0 0 0 0 8 0] [ ] [0 0 0 0 8 7 0 0 2] [ ] [0 9 0 0 0 1 4 0 0] [ ] [0 0 2 7 4 0 0 0 6] [ ] [0 0 6 0 9 0 0 7 0] is : [7 8 4 1 6 9 5 2 3] [ ] [3 6 1 8 5 2 9 4 7] [ ] [5 2 9 4 7 3 1 6 8] [ ] [2 7 8 9 1 6 3 5 4] [ ] [6 1 5 2 3 4 7 8 9] [ ] [9 4 3 5 8 7 6 1 2] [ ] [8 9 7 6 2 1 4 3 5] [ ] [1 3 2 7 4 5 8 9 6] [ ] [4 5 6 3 9 8 2 7 1] t3 := 0.637 It took , 0.637, second The Solution to the Fiendishly Hard Puzzle [0 0 0 0 7 0 0 6 0] [ ] [0 0 6 0 0 0 0 2 9] [ ] [7 4 0 0 0 0 0 0 1] [ ] [0 8 0 0 4 6 0 0 0] [ ] [0 0 3 0 0 0 5 0 0] [ ] [0 0 0 5 1 0 0 3 0] [ ] [2 0 0 0 0 0 0 1 8] [ ] [6 5 0 0 0 0 3 0 0] [ ] [0 7 0 0 2 0 0 0 0] is: [8 2 5 9 7 1 4 6 3] [ ] [3 1 6 8 5 4 7 2 9] [ ] [7 4 9 6 3 2 8 5 1] [ ] [5 8 2 3 4 6 1 9 7] [ ] [1 6 3 2 9 7 5 8 4] [ ] [4 9 7 5 1 8 2 3 6] [ ] [2 3 4 7 6 5 9 1 8] [ ] [6 5 1 4 8 9 3 7 2] [ ] [9 7 8 1 2 3 6 4 5] t4 := 4.168 It took , 4.168, second The Solution to the Impossible Puzzle, found in the internet by Phillip Matc\ hett Wood [6 0 0 0 0 0 0 0 3] [ ] [0 1 0 0 5 0 0 0 0] [ ] [0 0 0 2 0 0 4 0 0] [ ] [0 0 4 0 0 3 0 0 0] [ ] [0 7 0 0 9 0 0 5 0] [ ] [0 0 0 1 0 0 6 0 0] [ ] [0 0 3 0 0 8 0 0 0] [ ] [0 0 0 0 7 0 0 1 0] [ ] [5 0 0 0 0 0 0 0 2] is: [6 4 5 9 8 7 1 2 3] [ ] [3 1 2 4 5 6 8 9 7] [ ] [8 9 7 2 3 1 4 6 5] [ ] [1 5 4 7 6 3 2 8 9] [ ] [2 7 6 8 9 4 3 5 1] [ ] [9 3 8 1 2 5 6 7 4] [ ] [7 2 3 5 1 8 9 4 6] [ ] [4 6 9 3 7 2 5 1 8] [ ] [5 8 1 6 4 9 7 3 2] t5 := 220.984 It took , 220.984, second The times were [0.257, 0.291, 0.637, 4.168, 220.984] The whole thing took, 226.353, seconds