Card Strategy 2 3 4 5 6 7 8 9 10, J, Q, K A Level of count Hi-Lo +1 +1 +1 +1 +1 0 0 0 −1 −1 1 Hi-Opt I 0 +1 +1 +1 +1 0 0 0 −1 0 1 Hi-Opt II +1 +1 +2 +2 +1 +1 0 0 −2 0 2 KO +1 +1 +1 +1 +1 +1 0 0 −1 −1 1 Omega II +1 +1 +2 +2 +2 +1 0 −1 −2 0 2 Red 7 +1 +1 +1 +1 +1 0 or +1 0 0 −1 −1 1 Halves +0.5 +1 +1 +1.5 +1 +0.5 0 -0.5 −1 −1 3 Zen Count +1 +1 +2 +2 +2 +1 0 0 −2 −1 2