n: 30 m: 68 packed: 10 density: 0 nodes: 0 solveTime: 20 buildTime: 0 solved: true
{0,3,12}
{1,14,27}
{2,5,26}
{4,17,22}
{6,13,19}
{7,8,16}
{9,18,24}
{10,25,29}
{11,15,20}
{21,23,28}