Complex sentence: A number of 7x7 boards have been found, the most famous being the elaborate wooden board found at Ballinderry in 1932, featuring holes for pegged pieces, possibly to allow for portability of the game.
Split into simpler sentences: A number of 7x7 boards have been found, the most famous being the elaborate wooden board found at Ballinderry in 1932. The board has holes for pegged pieces, possibly to allow for portability of the game.