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[null,null,"To use this Sudoku solver:"]
[null,null,1,null,null,"Enter the numbers you have been given in the grid above"]
[null,null,2,null,null,"Now click the 'Worksheet' tab below"]

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[{"$nulls":14},"For guidance on how to complete, scroll down until you see the instructions below the worksheet"]
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[1,"This is your worksheet. Complete it by entering digits in the ",{"$nulls":13},"yellow cells",{"$nulls":4},"which will then turn",null,null,"this colour"]
[2,"For each cell, you are shown which digits are available in the",{"$nulls":13},"blue ribbon",null,null,"  which goes green if there's only one option"]
[3,"You may also enter any digit from 1 to 9 in the green box here -----------------------",{"$nulls":14},"----->",0,"<--------- enter a digit from 1 to 9 here"]
[null,null,"(and you will then be shown where in the grid that digit is a possibility)",{"$nulls":17},"(enter zero to clear the box)"]
[4,"We don't do all the work for you - you still have to use your powers of logic to eliminate some possibilities!"]
[5,"You can review progress at any stage by clicking the 'Solution' tab below"]
[null,null,"(click the 'Worksheet' tab to return here)"]

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[null,null,0,null,null,0,null,null,0,null,null,0,null,null,0,null,null,0,null,null,0,null,null,0,null,null,0,null,null,"Contact us today:"]
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[null,null,"To return to the worksheet,",{"$nulls":20},"click the 'Worksheet' tab below"]
[null,null,"Sudoku Solver version 1.00712"]

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