Complex sentence: Box-Senshuu Puzzle is about finding a combinations of numbers that can be arranged in a cross shaped box (+) such that it can be reduced to basic form of Box-Senshuu-Number (BSN) by following the rules mentioned below.
Split into simpler sentences: Box-Senshuu Puzzle is about finding a Box-Senshuu-Number (BSN) from given set of input values. A Box-Senshuu-Number is a combination of numbers that can be arranged in a cross shaped box (+) such that it can be reduced to basic form of Box-Senshuu-Number (BSN) by following the rules mentioned below.