Killer Sudoku Academy
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๐Ÿฅ‹ DOJO CHALLENGE INVITATION

Can You Beat This Solve?

A fellow practitioner has challenged you to solve this Killer Sudoku dojo puzzle!

EXPERT 9ร—9 ๐Ÿฅ‹ Blue Belt
08:42
Time
0
Mistakes
+200
XP
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In this 2-cell cage with a sum of 16, one cell is already confirmed as 9. Can you deduce the outie without guessing?

16
9
?
Deduction Formula
16 โˆ’ 9 = ?