Prove it is always possible for a n x n board to be tiled ( where n >=6 is odd and not divisible by 3) using (3-unit) L-shaped tiles, so that one tile always remains empty.
What approach should I take?
- remainder analysis
- induction ?
- graphs?
Prove it is always possible for a n x n board to be tiled ( where n >=6 is odd and not divisible by 3) using (3-unit) L-shaped tiles, so that one tile always remains empty.
What approach should I take?
- remainder analysis
- induction ?
- graphs?