n: 40 m: 468 packed: 13 density: 0 nodes: 0 solveTime: 18270 buildTime: 130 solved: true
{0,12,28}
{1,24,38}
{2,16,36}
{3,32,34}
{4,5,20}
{6,13,26}
{7,18,30}
{8,25,29}
{9,17,37}
{10,19,31}
{11,27,33}
{14,23,39}
{15,21,35}