Reference point: 6 → corner → 6Aim: Corner (K)Start: 6Arrival: 6A ball played from the 2nd diamond from the top (6) into the bottom-right corner with 2 tips of spin comes back to the same point (6).
Plus Two System (플러스투 시스템) · Drill cards
To the corner: Arrival = (Start + 6) ÷ 2 · To the short cushion: Arrival = Start + Aim
From 2 into the corner: (2 + 6) ÷ 2 = 4Aim: Corner (K)Start: 2Arrival: 4Start 2, played into the corner. The arrival is halfway between the start and the reference point: 4 (middle diamond).
From 4 into the corner: (4 + 6) ÷ 2 = 5Aim: Corner (K)Start: 4Arrival: 5Start 4 (middle diamond), corner. Arrival 5.
To the half diamond: 3 + 2 = 5Aim: 2Start: 3Arrival: 5Start 3, aim half a diamond from the corner on the short cushion (2). Arrival 5.
To the 1st diamond: 4 + 3 = 7Aim: 3Start: 4Arrival: 7Start 4, aim at the 1st diamond on the short cushion (3). Arrival 7 (1st diamond from the top).
To the half diamond: 2.5 + 2 = 4.5Aim: 2Start: 2.5Arrival: 4.5Start 2½, aim at the half diamond (2). Arrival 4½.