No one was able to guess Solution: 44187 ~ Explanation: - | LeonardoRoyale
No one was able to guess Solution: 44187 ~ Explanation: - Number of rectangles in the big square on the left: >>> the formula is available on google, just by searching "number of rectangles in a chessboard" (1+2+3+4+...+20)^2 = 44100 - Number of rectangles in the small square on the right: just count them, there are 87 into it >>> 44100+87=44187
