| With this puzzle you are presented with a 6-by-6 grid. Each row and column in this grid originally contained one A, one B, one C, one D and two blank squares, though not necessarily in that order. |
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| Each red letter refers to the first of the four letters encountered in the relevant column or row. Each yellow letter refers to the second of the four letters encountered. |
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| To complete the grid you need to use the clues given to remove the letters which do not belong in a square. |
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| For example, if you have a red squared letter then the letter given cannot be in any of the last 3 squares in this row or column, otherwise you wouldn't have space for the other 3 letters |
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| To remove a letter you select the square and enter the letter or letters you want to remove. |
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