# [LeetCode]#1812. Determine Color of a Chessboard Square

**Environment: Python 3.8**

**Key technique: if, ord, ASCII**

You are given `coordinates`

, a string that represents the coordinates of a square of the chessboard. Below is a chessboard for your reference.

Return `true`

* if the square is white, and *`false`

* if the square is black*.

The coordinate will always represent a valid chessboard square. The coordinate will always have the letter first, and the number second.

**Example 1:**

**Input:** coordinates = "a1"

**Output:** false

**Explanation:** From the chessboard above, the square with coordinates "a1" is black, so return false.

**Analysis:**

- Convert ‘a’ and ‘1’ to ASCII.
- If ord(a)+ord(1) is odd, return true. For example, ord(‘a’)+ord(‘1’) =97+ 49=146
- Else, return false.

**Solution:**

`class Solution:`

def squareIsWhite(self, coordinates):

test=coordinates[0]

number=coordinates[1]

if ((ord(test)+ord(number)) % 2 !=0):

return True

else:

return False

**Submissions:**