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· inv-1
Invariants & Monovariants · Coloring arguments
Olympiad classic
●●●●○ 7/10
~5 min
⏱ 0:00
An
8
×
8
8 \times 8
8
×
8
board has two diagonally opposite corner squares removed. How many ways can the remaining
62
62
62
squares be tiled by
31
31
31
dominoes?
coloring
parity
impossibility
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Hint 1 of 3
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