Killer Triple

A Killer Triple is a Killer Subset of size 3.

How it works

Here is a simple example:

The cage 8/2 in R9C56 = {17|26|35} must include one of {123}. It forms a naked triple on {123} with the cells in R9C12 = {123}. Therefore {123} of R9 is locked in R9C1256 and can be eliminated from the rest of R9, which means R9C9 = 4.

Here is another example of a killer triple:

The cage 9/3 in R1C123 = {126|135|234} must include either {12} or {13} or {23}. It must include at least two digits out of {123}. It forms a naked triple on {123} with R1C4 = {123}. Therefore {123} of R1 is locked in R1C1234 and can be eliminated from the rest of R1.

See Also:

• Killer Sudoku
• Killer Subset
• Killer Pair