hint for puzzle for yuriy

clue.rb

grid = [[1,  2,   3,  4,  5,  6,  7,  8],
        [9,  10, 11, 12, 13, 14, 15, 16],
        [17, 18, 19, 20, 21, 22, 23, 24],
        [25, 26, 27, 28, 29, 30, 31, 32],
        [33, 34, 35, 36, 37, 38, 39, 40],
        [41, 42, 43, 44, 45, 46, 47, 48],
        [49, 50, 51, 52, 53, 54, 55, 56],
        [57, 58, 59, 60, 61, 62, 63, 64]]
grid.each do |elem_arr|
  puts "#{elem_arr[0]}, #{elem_arr[1]}"  
end
# logs the following
# 1 , 2
# 9 , 10
# 17 , 18
# 25 , 26
# 33 , 34
# 41 , 42
# 49 , 50
# 57 , 58