QuietdokuTecniche del sudoku
Ogni schema di Quietdoku si risolve solo con la logica. Queste guide spiegano ogni tecnica passo per passo, dal primo candidato unico all’X-Wing e oltre, con una griglia di esempio per ciascuna.
Naked single: the cell with only one possible digit
Learn the naked single, the first sudoku technique: find a cell where only one digit fits. Clear rules, a worked example and common mistakes.
Leggi →FacileHidden single: the only place a digit can go
A hidden single is a digit that fits in only one cell of a row, column or box. Learn how to scan for it, with a worked example and common mistakes.
Leggi →MedioPointing pairs and triples: when a box points along a line
Pointing pairs: when a digit in a box is confined to one row or column, remove it from the rest of that line. Rules, a worked example and pitfalls.
Leggi →MedioBox-line reduction: when a line claims a digit for one box
Box-line reduction: when a digit in a row or column fits only inside one box, remove it from the rest of that box. Clear logic and a worked example.
Leggi →DifficileNaked pair: two cells, two digits, fewer candidates
Learn the naked pair: two cells in a row, column or box with the same two candidates. See why it works, how to find it and a solved example.
Leggi →DifficileHidden pair: two digits with only two homes
A hidden pair is two digits that fit in only the same two cells of a unit. Learn how to spot it, what it removes and follow a solved example.
Leggi →DifficileNaked triple: three cells that lock three digits
A naked triple is three cells in one unit whose candidates use only three digits. Learn the rule, the tricky {2,5} {2,6} {5,6} case and an example.
Leggi →DifficileHidden triple: three digits squeezed into three cells
A hidden triple is three digits that fit only in the same three cells of a unit. Learn how to find it, what to remove and walk through an example.
Leggi →EspertoThe X-Wing: a rectangle that clears a column
Learn the X-Wing sudoku technique: what the pattern looks like, why it works, how to spot it, and a worked example with the exact candidates.
Leggi →EspertoThe Swordfish: an X-Wing with three lines
The Swordfish sudoku technique explained: the three-row pattern, why it works, how to scan for it, and a worked example with every candidate listed.
Leggi →EspertoThe XY-Wing: a pivot and two pincers
Learn the XY-Wing (Y-Wing) sudoku technique: a pivot and two pincers with two candidates each. Why it works, how to find it and a worked example.
Leggi →EspertoThe Skyscraper: an X-Wing with one corner shifted
The Skyscraper sudoku technique: two strong links on one digit, a shared base and two offset roofs. Why it works, how to spot it and a worked example.
Leggi →Quietdoku per iPhone e Android
Porta la calma con te.
L’app funziona offline e aggiunge ciò che aiuta a farne un’abitudine.
- Quattro sfide del giorno, una per livello
- Serie e carte traguardo da collezionare
- Classifiche mondiali e per paese, stagioni
- Sfida un amico con un link
- Accedi con Apple o Google per conservare i progressi quando cambi telefono
Inquadra per scaricare
Gratis · Senza pubblicità · Pro facoltativo per giocare senza limiti