Question
What is the maximum number of chess kings that can be placed on an `8xx8` board such that they do not threaten each other?
Difficulty level (1 very easy - 10 very hard): 2
Topics:
Combinatorics
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Pigeonhole Principle
Proof and Example
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Constructing an Example / Counterexample
Combinatorics
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Case Analysis / Checking Cases
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Processes / Procedures
Minimum and Maximum Problems / Optimization Problems
Combinatorics
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Combinatorial Geometry
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Grid Paper Geometry / Lattice Geometry
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