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Unique Rectangle Type 3

This technique combines the Unique Rectangle with the “Naked” \ “Hidden” techniques

  1. If you look at the example, you can see that two cells in the Unique Rectangle have extra candidates: 4, 6 and 6, 9
Unique Rectangle type 3 - initial example
  1. This means that the values 4, 6, and 9 are the candidates for these two cells
Unique Rectangle type 3 - finding the hidden triple
  1. This forms a Hidden Triplet pattern when combined with the two cells in the same column that also contain the values 4, 6, and 9. Therefore, 4, 6, and 9 cannot be placed in any other cell in the column
Unique Rectangle type 3 - Result after applying the technique

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Unique Rectangle Type 4>