9 8 7 1 5 2 3 5 7 4 9 6 1 8 6 3 9 1 1 8 2 9 4 2 7 8 5 3 18-12-2017.......medium 18-12-2017 www.daily-sudoku-puzzle.com

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9=>(9,1) | 2=>(3,5) | 3=>(8,3) | 9=>(2,8) | 5=>(5,5) | 3=>(7,4) | 6=>(9,8) | 1=>(3,3) | 3=>(2,6) | 3=>(5,2) | 2=>(9,2) | 9=>(3,6) | 9=>(8,5) | 7=>(7,8) | 2=>(1,1) | 1=>(5,1) | 1=>(2,4) | 9=>(5,4) | 1=>(8,6) | 2=>(4,4) | 7=>(8,4) | 4=>(9,4) | 2=>(6,3) | 6=>(1,6) | 6=>(8,2) | 6=>(7,5) | 1=>(9,9) | 4=>(1,2) | 6=>(2,1) | 5=>(7,1) | 8=>(3,2) | 4=>(2,5) | 5=>(6,2) | 6=>(3,9) | 4=>(5,3) | 2=>(5,8) | 4=>(7,7) | 7=>(4,1) | 8=>(6,1) | 7=>(2,2) | 8=>(2,7) | 4=>(4,9) | 5=>(4,7) | 6=>(5,7) | 7=>(5,6) | 4=>(6,6) | 8=>(8,8) | 3=>(4,8) | 8=>(5,9) | 7=>(6,9) | 5=>(8,9) | 5=>(1,8) | 3=>(1,9) |