Choong-Moo 
1st Gup
Choong-Moo was the name given to the great Admiral Yi Soon-Sin of the Yi Dynasty. He was reputed to have invented the first armoured battleship (Kobukson) in 1592, which is said to be the precursor of the present day submarine. The reason why this pattern ends with a left hand attack is to symbolize his regrettable death, having no chance to show his unrestrained potentiality checked by the forced reservation of his loyalty to the king.
Pattern - 30 Movements
Grand Master Choi - 1972