n: 40 m: 211 packed: 13 density: 0 nodes: 0 solveTime: 5100 buildTime: 30 solved: true {0,18,23} {1,33,36} {2,8,19} {3,10,12} {4,9,13} {5,29,35} {6,26,28} {7,24,34} {11,14,39} {15,20,30} {16,25,38} {17,31,32} {21,22,37}