What two bowling pins are left in order for it to be a split?

A split in Bowling occurs when two or more pins remain standing, with at least one pin standing behind the front pin, creating a gap between them. The most common example is when the 2 and 4 pins or 3 and 10 pins remain standing after the first roll. For a split to be classified, the remaining pins must be difficult to knock down in one throw, which adds to the challenge of converting the split into a spare.