n: 30 m: 220 packed: 10 density: 0 nodes: 0 solveTime: 2060 buildTime: 30 solved: true
{0,9,18}
{1,8,23}
{2,7,12}
{3,14,15}
{4,16,27}
{5,6,13}
{10,26,28}
{11,19,24}
{17,20,29}
{21,22,25}