n: 30 m: 328 packed: 10 density: 0 nodes: 0 solveTime: 5300 buildTime: 70 solved: true
{0,9,16}
{1,17,18}
{2,14,15}
{3,26,27}
{4,12,21}
{5,11,22}
{6,19,28}
{7,10,13}
{8,23,29}
{20,24,25}