XYZ-Wing Sudoku Technique: How to Spot and Use It Step by Step
Sudoku a Day Blog ·
XYZ-Wing तीन कोशिकाओं वाला Sudoku पैटर्न है, जिसमें एक pivot cell दो pincer cells से जुड़ता है। जब candidates सही तरह से मिलते हैं, तो जो cell दोनों pincers को देखता है, उससे shared digit सुरक्षित रूप से हटाया जा सकता है।
इसे singles, locked candidates और आसान pair techniques के बाद इस्तेमाल करें; hard puzzles में एक सही elimination पूरी grid खोल सकती है।
XYZ-Wing workflow
- Pick one digit and scan rows (or columns) only.
- Find exactly three rows where the candidate appears in two or three cells.
- Verify those candidates align to exactly three columns total.
- Eliminate that digit from other cells in those three columns.
Common mistakes to avoid
- Mixing row-based and column-based XYZ-Wing scans in the same step.
- Forcing a pattern when candidates occupy more than three lines.
- Eliminating inside the pattern cells instead of outside them.
FAQ
When should I use XYZ-Wing in Sudoku?
Use XYZ-Wing after singles, locked candidates, and simpler pair/triple techniques are exhausted on hard or expert puzzles.
Is XYZ-Wing just a bigger X-Wing?
Yes. X-Wing uses two lines and two columns; XYZ-Wing extends the same logic to three lines and three columns.