Starting board: 0 0 7 0 0 0 5 0 0 0 4 0 7 0 6 0 2 0 8 0 0 0 1 0 0 0 6 2 0 0 0 6 0 0 0 5 0 1 6 4 0 5 2 8 0 5 0 0 0 8 0 0 0 9 1 0 0 0 3 0 0 0 7 0 2 0 6 0 8 0 5 0 0 0 9 0 0 0 8 0 0 Live cells: 51 Max freedoms: 5 Min freedoms: 1 Average: 3.31 Median: 3 Quartile: 3 Freedom counts: 1: 1 cells 2: 6 cells 3: 22 cells 4: 20 cells 5: 2 cells Range, 1-3 freedoms: 29; 5-7 freedoms: 2 Ratio, 5-7 to 1-3: 0.07 Natural solver starting(mode=constraints_only); board: - - 7 - - - 5 - - - 4 - 7 - 6 - 2 - 8 - - - 1 - - - 6 2 - - - 6 - - - 5 - 1 6 4 - 5 2 8 - 5 - - - 8 - - - 9 1 - - - 3 - - - 7 - 2 - 6 - 8 - 5 - - - 9 - - - 8 - - l3 actions: 0 Row pushes: 8 Col pushes: 3 Square pushes: 0 Total pushes: 11 Natural solver done; filled in 1 cells on this pass; board: - - 7 - - - 5 - - - 4 - 7 - 6 - 2 - 8 - - - 1 - - - 6 2 - - - 6 - - - 5 - 1 6 4 - 5 2 8 3 5 - - - 8 - - - 9 1 - - - 3 - - - 7 - 2 - 6 - 8 - 5 - - - 9 - - - 8 - - Board assessment after first pass: Live cells: 50 Max freedoms: 4 Min freedoms: 2 Average: 3.18 Median: 3 Quartile: 3 Freedom counts: 1: 0 cells 2: 9 cells 3: 23 cells 4: 18 cells Range, 1-3 freedoms: 32; 5-7 freedoms: 0 Ratio, 5-7 to 1-3: 0.00 Natural solver starting(mode=partial_positive); board: - - 7 - - - 5 - - - 4 - 7 - 6 - 2 - 8 - - - 1 - - - 6 2 - - - 6 - - - 5 - 1 6 4 - 5 2 8 3 5 - - - 8 - - - 9 1 - - - 3 - - - 7 - 2 - 6 - 8 - 5 - - - 9 - - - 8 - - l3 actions: 0 Row pushes: 14 Col pushes: 19 Square pushes: 12 Total pushes: 45 Natural solver done; filled in 16 cells on this pass; board: - - 7 8 2 - 5 - - - 4 1 7 5 6 - 2 8 8 5 2 - 1 - - - 6 2 - 8 - 6 - - - 5 - 1 6 4 - 5 2 8 3 5 - 4 - 8 - - - 9 1 8 5 - 3 - - - 7 - 2 3 6 - 8 - 5 - - - 9 5 - 1 8 3 2 Board assessment after second pass: Live cells: 34 Max freedoms: 4 Min freedoms: 2 Average: 2.68 Median: 3 Quartile: 2 Freedom counts: 1: 0 cells 2: 12 cells 3: 21 cells 4: 1 cells Range, 1-3 freedoms: 33; 5-7 freedoms: 0 Ratio, 5-7 to 1-3: 0.00 Natural solver starting(mode=positive_with_multiset); board: - - 7 8 2 - 5 - - - 4 1 7 5 6 - 2 8 8 5 2 - 1 - - - 6 2 - 8 - 6 - - - 5 - 1 6 4 - 5 2 8 3 5 - 4 - 8 - - - 9 1 8 5 - 3 - - - 7 - 2 3 6 - 8 - 5 - - - 9 5 - 1 8 3 2 l3 actions: 0 Row pushes: 0 Col pushes: 0 Square pushes: 0 Total pushes: 0 Natural solver done; filled in 0 cells on this pass; board: - - 7 8 2 - 5 - - - 4 1 7 5 6 - 2 8 8 5 2 - 1 - - - 6 2 - 8 - 6 - - - 5 - 1 6 4 - 5 2 8 3 5 - 4 - 8 - - - 9 1 8 5 - 3 - - - 7 - 2 3 6 - 8 - 5 - - - 9 5 - 1 8 3 2 Board assessment after third pass: Live cells: 34 Max freedoms: 4 Min freedoms: 2 Average: 2.68 Median: 3 Quartile: 2 Freedom counts: 1: 0 cells 2: 12 cells 3: 21 cells 4: 1 cells Range, 1-3 freedoms: 33; 5-7 freedoms: 0 Ratio, 5-7 to 1-3: 0.00 Natural solver starting(mode=esoteric1); board: - - 7 8 2 - 5 - - - 4 1 7 5 6 - 2 8 8 5 2 - 1 - - - 6 2 - 8 - 6 - - - 5 - 1 6 4 - 5 2 8 3 5 - 4 - 8 - - - 9 1 8 5 - 3 - - - 7 - 2 3 6 - 8 - 5 - - - 9 5 - 1 8 3 2 l3 actions: 1 1 useful internal multiset operations at size 2 L3 internal record: 2/4 Solved. Solution: 3 6 7 8 2 9 5 1 4 9 4 1 7 5 6 3 2 8 8 5 2 3 1 4 7 9 6 2 9 8 1 6 3 4 7 5 7 1 6 4 9 5 2 8 3 5 3 4 2 8 7 1 6 9 1 8 5 9 3 2 6 4 7 4 2 3 6 7 8 9 5 1 6 7 9 5 4 1 8 3 2 pop_state: Overpopped state stack! Row pushes: 21 Col pushes: 20 Square pushes: 18 Total pushes: 59 Object squash operations: 2 2 total squash operations Natural solver done; we won. Grand totals: Row pushes: 43 Col pushes: 42 Square pushes: 30 Grand total pushes: 115 Solved cells at each level: 1:1, 2:16, 3:0, 4:34 Solver level: 4 Raw rating: 2.54 Level adjustment: 2.80 Stars: 4 Done.