The British Draughts is quite different from International Draughts. One of the most apparent differences is the chequered board size. While the British draughts is played on an 8×8 chequered board (totaling 64 squares), International draughts is played on a 10×10 chequered board (totaling 100 squares).
Both are played by two draughtsmen; each player gets the same number of checker pieces, the pieces are moved diagonally to free shaded squares.
The International Draughts chequered board size is bigger, containing up to a hundred squares, (where 50 are shaded/dark, and the other 50 are light). In contrast, the British Draughts is played on a smaller chequered board with 64 squares (32 are shaded/darker, the other 32 are light).
In International Draughts, the checkers’ pieces can move back & forth to capture. Also, the long-range moving and capturing capability of kings (in International Draughts) is called “flying.” This is not so with the English Draughts where pieces move only forward.
The player with the darker pieces moves first in British Draughts, while the player with lighter pieces moves first in International Draughts.
Only crowned Kings can move backward in English/British Draughts, but virtually all pieces can move back and forth in International Draughts.
In International Draughts, the players get 20 checker pieces while in British Draughts, the players get 12 checker pieces.
These are some of the notable differences between British and International Draughts.