1 8 3 9 9 2 8 2 6 1 6 9 1 2 4 9 7 3 4 5 2 6 8 7 3 5 4 1 18-01-2021.......dificil 18-01-2021 www.daily-sudoku-puzzle.com

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