n: 40 m: 206 packed: 13 density: 0 nodes: 0 solveTime: 710 buildTime: 20 solved: true
{0,15,23}
{1,29,36}
{2,7,11}
{3,27,39}
{4,10,19}
{5,16,26}
{6,34,35}
{8,25,31}
{9,12,38}
{13,20,32}
{14,22,37}
{18,28,33}
{21,24,30}