As a result, the cells (9,7) and (8,8) form a new naked pair with the candidate numbers 5 and 6.įinally, the three cells (1,8), (2,8) and (3,9) in box 3 form a naked triplet with the candidate numbers 1, 3 and 9. Similarly, the redundant options 3 and 9 can be removed from cell (8,8). Hence the redundant options 2 and 3 can be removed from cell (9,7). The three cells (7,7), (7,9) and (9,9) in box 9 form another naked triplet with the candidate numbers 2, 3 and 9. This means that the three cells (6,2), (6,6) and (6,8) in row 6 form a naked triplet with the candidate numbers 5, 7 and 8. See the paragraph above Figure 4 if you cannot see why the 2 in (6,2) cannot be used. In row 6, the only position possible for a 2 is (6, 4).
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