BeginnerBasics
Practise: Scanning
This puzzle leans on the Scanning throughout. Work through it and the move becomes second nature.
Practice
Mistakes0Score1,000Time0:00
How to spot it
Choose a digit that already appears several times, since more copies mean more blocking lines. Take one box at a time and mentally draw lines from every copy of the digit in the surrounding rows and columns. Cells the lines pass through are ruled out. If a box has one free cell left for that digit, place it.
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Put it to use
Where you will meet it
This pattern is the backbone of easy grids. Start one and you will use it within a few moves.
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