Complex sentence: He represented Bengal and India in domestic and world championships-the World Amaaetuer Billiards Championship and the World Amauture Snooker Championship-he won the inaugural world championship held at Kolkata (then Calcutta) in 1958.
Split into simpler sentences: He represented Bengal and India in domestic and world championships-the World Amateur Billiards Championship and the World Amateur Snooker Championship. He won the inaugural World Amateur Snooker Championship held at Kolkata (then Calcutta) in 1958.