package main

const A8 = 0
const B8 = 1
const C8 = 2
const D8 = 3
const E8 = 4
const F8 = 5
const G8 = 6
const H8 = 7
const A7 = 8
const B7 = 9
const C7 = 10
const D7 = 11
const E7 = 12
const F7 = 13
const G7 = 14
const H7 = 15
const A6 = 16
const B6 = 17
const C6 = 18
const D6 = 19
const E6 = 20
const F6 = 21
const G6 = 22
const H6 = 23
const A5 = 24
const B5 = 25
const C5 = 26
const D5 = 27
const E5 = 28
const F5 = 29
const G5 = 30
const H5 = 31
const A4 = 32
const B4 = 33
const C4 = 34
const D4 = 35
const E4 = 36
const F4 = 37
const G4 = 38
const H4 = 39
const A3 = 40
const B3 = 41
const C3 = 42
const D3 = 43
const E3 = 44
const F3 = 45
const G3 = 46
const H3 = 47
const A2 = 48
const B2 = 49
const C2 = 50
const D2 = 51
const E2 = 52
const F2 = 53
const G2 = 54
const H2 = 55
const A1 = 56
const B1 = 57
const C1 = 58
const D1 = 59
const E1 = 60
const F1 = 61
const G1 = 62
const H1 = 63

const NO_SQUARE = 65
