n: 30 m: 156 packed: 10 density: 0 nodes: 0 solveTime: 240 buildTime: 20 solved: true
{0,7,20}
{1,8,29}
{2,11,12}
{3,19,24}
{4,5,21}
{6,13,14}
{9,25,26}
{10,15,16}
{17,22,28}
{18,23,27}