turn every other one upside down
There are 32 red squares on a 8x8 regular checker board.
100x3
Chinese checker board
24 squares are covered on a checker board.
64
1/2 of it.
64
64
64 Squares on a Checker Board
4
Black and white squares.
Treating with a pre-emergent herbicide before topping the soil with sod is a way to eliminate weeds before laying a lawn. Selective and post-emergent herbicides may be applied once the sod is in place.