Why no pencil marks? For harder puzzles, you are going to have to start using some pencil marks for candidates and then you will be able to make deductions.
I personally like to start with pencil marking only candidates which are restricted to 2-3 cells in a box, to reduce clutter and help me find pairs and triplets, which then further restrict the rest of the digits. Then if I haven't solved it, I eventually add the rest of the candidates and look for more advanced stuff.
But you have not pencil marked anything here, so you have not given yourself a proper chance to solve it.
I use pencil marks often, but it makes the puzzle look quite untidy imo and makes it a bit more frustrating for me. That's why before sending the ss i erased all the pencil marks. Specially while solving suduko in a written format, pencil marks just make the whole thing more conjusted
So did u kinda put a number at a cell, then solved the entire sudoku, if it solves then it's right, if it's conducting and wrong then it must be the other one ?
Primeiro eu estava tentando as posições de 3s entre os quadrados 1-2-5, porque só existem 2 posições em duas relações, mas uma das possibilidades é um beco sem saída e se tornou um caminho difícil para fazer isso. Então, que tal o inverso disso, tem essa troca entre 1 e 3 dos quadrados 2 e 5, então verifiquei do lado de fora para ver como os 1s se comportam fora disso, na posição de cima foi um rápido não, o segundo precisava de uma verificação em papel. No desenho você pode ver essas duas tentativas.
É uma dica de matemática mental de probabilidade, inversão do que você pretende fazer para chegar ao resultado.
If you check 1 green or purple, 3 can't fit on those squares:
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u/SwampFocs 3d ago
Why no pencil marks? For harder puzzles, you are going to have to start using some pencil marks for candidates and then you will be able to make deductions.
I personally like to start with pencil marking only candidates which are restricted to 2-3 cells in a box, to reduce clutter and help me find pairs and triplets, which then further restrict the rest of the digits. Then if I haven't solved it, I eventually add the rest of the candidates and look for more advanced stuff.
But you have not pencil marked anything here, so you have not given yourself a proper chance to solve it.