Is the Chess Square Light

Easy

A chessboard square is given as a two-character string square: first the file, a letter from a to h, then the rank, a digit from 1 to 8. The corner square a1 is dark, and squares sharing a side always have opposite colors. Return True if square is light and False if it is dark.

Example 1

square='d1' → True

The white queen starts the game on d1, which is a light square.

Example 2

square='h8' → False

h8 sits on the same long diagonal as a1, so it is dark.

Example 3

square='c4' → True

Constraints

len(square) == 2
'a' ≤ square[0] ≤ 'h'
'1' ≤ square[1] ≤ '8'

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Topics

Math String

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Input

square='d1'

Expected

True

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