n: 40 m: 351 packed: 13 density: 0 nodes: 0 solveTime: 4600 buildTime: 70 solved: true
{0,15,23}
{1,7,31}
{2,12,38}
{3,17,18}
{4,9,14}
{5,6,34}
{8,11,20}
{10,22,37}
{13,16,32}
{19,28,29}
{21,24,26}
{25,30,35}
{27,33,36}