Amazing facts about chess

There are some amazing facts about chess, and a few might actually amaze you way more than you thought. Here they are:-

1.The number of possible unique chess games is much greater than the number of electrons in the universe.

2. The longest chess game theoretically possible is 5,949 moves.

3. As late as 1561, Castling was two moves. You had to play R-KB1 on one move and K-KN1 on the next move.

4. The word “Checkmate” in Chess comes from the Persian phrase “Shah Mat,” which means “the King is dead.”

5. The number of possibilities of a Knight’s tour is over 122 million.

6. The longest official chess game lasted 269 moves and ended in a draw.

7. From the starting position, there are eight different ways to Mate in two moves and 355 different ways to Mate in three moves.

8. The new Pawn move, advancing two squares on its first move instead of one, was first introduced in Spain in 1280.

 Well, I'm done! These are all the facts I know. Do you know more? ( No cheating though!)