Starting board: 1 - - - 3 - - - 9 - 2 - 6 4 - - 8 - - - 3 2 - - 7 4 - 2 - - - - - - - - - 1 4 - - - - - - - - - - 6 2 8 - - - - 7 - - - 3 - - - 8 - 4 5 - - 2 - - - - - - - - - 1 Live cells: 57 Max freedoms: 7 Min freedoms: 2 Average: 3.89 Median: 4 Quartile: 3 Freedom counts: 1: 0 cells 2: 8 cells 3: 12 cells 4: 20 cells 5: 13 cells 6: 3 cells 7: 1 cells Range, 1-3 freedoms: 20; 5-7 freedoms: 17 Ratio, 5-7 to 1-3: 0.85 Natural solver starting(mode=constraints_only); board: 1 - - - 3 - - - 9 - 2 - 6 4 - - 8 - - - 3 2 - - 7 4 - 2 - - - - - - - - - 1 4 - - - - - - - - - - 6 2 8 - - - - 7 - - - 3 - - - 8 - 4 5 - - 2 - - - - - - - - - 1 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: 1 - - - 3 - - - 9 - 2 - 6 4 - - 8 - - - 3 2 - - 7 4 - 2 - - - - - - - - - 1 4 - - - - - - - - - - 6 2 8 - - - - 7 - - - 3 - - - 8 - 4 5 - - 2 - - - - - - - - - 1 Board assessment after first pass: Live cells: 57 Max freedoms: 7 Min freedoms: 2 Average: 3.89 Median: 4 Quartile: 3 Freedom counts: 1: 0 cells 2: 8 cells 3: 12 cells 4: 20 cells 5: 13 cells 6: 3 cells 7: 1 cells Range, 1-3 freedoms: 20; 5-7 freedoms: 17 Ratio, 5-7 to 1-3: 0.85 Natural solver starting(mode=partial_positive); board: 1 - - - 3 - - - 9 - 2 - 6 4 - - 8 - - - 3 2 - - 7 4 - 2 - - - - - - - - - 1 4 - - - - - - - - - - 6 2 8 - - - - 7 - - - 3 - - - 8 - 4 5 - - 2 - - - - - - - - - 1 l3 actions: 0 Row pushes: 14 Col pushes: 8 Square pushes: 7 Total pushes: 29 Natural solver done; filled in 14 cells on this pass; board: 1 4 - - 3 - 2 - 9 7 2 - 6 4 - 1 8 3 - - 3 2 - - 7 4 - 2 - - - - 4 - - - - 1 4 - - - - - 2 - - - - 6 2 8 - 4 4 - 7 - 2 - 3 - 8 - 8 1 4 5 - - 2 - - - 2 - - - 4 - 1 Board assessment after second pass: Live cells: 43 Max freedoms: 6 Min freedoms: 2 Average: 3.56 Median: 3 Quartile: 3 Freedom counts: 1: 0 cells 2: 8 cells 3: 15 cells 4: 10 cells 5: 8 cells 6: 2 cells Range, 1-3 freedoms: 23; 5-7 freedoms: 10 Ratio, 5-7 to 1-3: 0.43 Natural solver starting(mode=positive_with_multiset); board: 1 4 - - 3 - 2 - 9 7 2 - 6 4 - 1 8 3 - - 3 2 - - 7 4 - 2 - - - - 4 - - - - 1 4 - - - - - 2 - - - - 6 2 8 - 4 4 - 7 - 2 - 3 - 8 - 8 1 4 5 - - 2 - - - 2 - - - 4 - 1 l3 actions: 1 1 useful internal multiset operations at size 2 L3 internal record: 2/4 Row pushes: 2 Col pushes: 1 Square pushes: 0 Total pushes: 3 Natural solver done; filled in 0 cells on this pass; board: 1 4 - - 3 - 2 - 9 7 2 - 6 4 - 1 8 3 - - 3 2 - - 7 4 - 2 - - - - 4 - - - - 1 4 - - - - - 2 - - - - 6 2 8 - 4 4 - 7 - 2 - 3 - 8 - 8 1 4 5 - - 2 - - - 2 - - - 4 - 1 Board assessment after third pass: Live cells: 43 Max freedoms: 6 Min freedoms: 2 Average: 3.56 Median: 3 Quartile: 3 Freedom counts: 1: 0 cells 2: 8 cells 3: 15 cells 4: 10 cells 5: 8 cells 6: 2 cells Range, 1-3 freedoms: 23; 5-7 freedoms: 10 Ratio, 5-7 to 1-3: 0.43 Natural solver starting(mode=esoteric1); board: 1 4 - - 3 - 2 - 9 7 2 - 6 4 - 1 8 3 - - 3 2 - - 7 4 - 2 - - - - 4 - - - - 1 4 - - - - - 2 - - - - 6 2 8 - 4 4 - 7 - 2 - 3 - 8 - 8 1 4 5 - - 2 - - - 2 - - - 4 - 1 Solved. Solution: 1 4 8 7 3 5 2 6 9 7 2 5 6 4 9 1 8 3 6 9 3 2 1 8 7 4 5 2 3 6 8 9 4 5 1 7 8 1 4 5 7 3 6 9 2 5 7 9 1 6 2 8 3 4 4 6 7 9 2 1 3 5 8 3 8 1 4 5 7 9 2 6 9 5 2 3 8 6 4 7 1 pop_state: Overpopped state stack! Row pushes: 20 Col pushes: 20 Square pushes: 30 Total pushes: 70 Object squash operations: 4 1 total squash operations Natural solver done; we won. Grand totals: Row pushes: 36 Col pushes: 29 Square pushes: 37 Grand total pushes: 102 Solved cells at each level: 1:0, 2:14, 3:0, 4:43 Solver level: 4 Raw rating: 7.68 Level adjustment: 2.10 Stars: 4 Done.