Interesting facts about chess moves

• There are 20 possible opening moves in chess
• There are 204 squares in total
• There are 169,518,829,100,544,000,000,000,000,000 ways to play the first 10 moves in chess
• There are 400 different positions that can result after the first move (each player making a move). After just two moves, there are some 72,084 positions possible.
• There are exactly 46,783,665,034,756,288,456,012,645 move possibilities in a game of chess