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#Solving sudoku puzzles techniques crack#
#Solving sudoku puzzles techniques windows#

Find the ‘sole candidate’: Sometimes, only one number can possibly fit in a cell.The numbers that will go in their empty cells can be easily narrowed down, which will help every 3×3 region connected to those rows and columns. Look for individual rows and columns that are nearly full.This helps you make quick deductions while filling every other 3×3 grid, preventing mistakes later. Another technique while solving on paper is to mark cells in every 3×3 region where a certain number can go, by writing it in a small size in the corner.

This technique is called cross-hatching:Įxample of cross-hatching while trying the find the placement of a ‘1’ in a 3×3 grid. When done on paper, you can draw lines marking these rows and columns.

While filling each cell in a 3×3 region, scan all the rows and columns that pass through it, and note numbers that are already pre-filled.

Starting by filling all the 1s, then the 2s, and so on. Alternatively, you could also pick consecutive numbers.

Pick the most commonly appearing number across the whole grid, and try to find its place within each 3×3 grid.

Pick a 3×3 region to fill, one by one, instead of attempting the whole 9×9 grid at once.

Regardless of the medium, these solving techniques should work on every classic grid you play: You might love going old school with pen and paper, but s udoku is now popularly played online, with auto-checker tools helping build confidence. If you’d like a deep dive into all the possibilities, this Glossary of Sudoku is a good starting point.

#Solving sudoku puzzles techniques crack#

Each grid shares one 3×3 region with another grid.Ĭompetitive events, such as the Indian qualifiers for the World Sudoku Championships, have an interesting mix of variants that a solver must crack as fast as possible. Samurai Sudoku: Five 9×9 classic grids that overlap at their corners. The grid’s diagonals may form a hidden word. Wordoku: Classic sudoku but with alphabets in place of numbers.

#Solving sudoku puzzles techniques windows#

These regions resemble four windows in a frame, hence the name: Example of a windoku puzzle with shaded interior regions.

The digits 1–9 must appear in the shaded regions only once. Windoku or Hyper Sudoku: Classic grid with 3×3 regions, but with four additional shaded 3×3 regions in the middle. Trending | After 11 years of trying, Mumbaikar wins India’s first silver at World Puzzle Championship