1 9 7 8 7 6 5 4 6 4 3 8 2 7 9 4 5 4 3 8 1 7 9 4 1 3 8 3 5 6 31-12-2020.......fiendish 31-12-2020 www.daily-sudoku-puzzle.com

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