Difference between revisions of "1999 IMO Problems/Problem 3"
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Latest revision as of 22:56, 18 November 2023
Problem
Consider an 
square board, where 
is a fixed even positive integer. The board is divided into 
units squares. We say that two different squares on the board are adjacent if they have a common side.
unit squares on the board are marked in such a way that every square (marked or unmarked) on the board is adjacent to at least one marked square.
Determine the smallest possible value of .
Solution
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See Also
| 1999 IMO (Problems) • Resources | ||
| Preceded by Problem 2 |
1 • 2 • 3 • 4 • 5 • 6 | Followed by Problem 4 |
| All IMO Problems and Solutions | ||
