n: 40 m: 237 packed: 13 density: 0 nodes: 0 solveTime: 5750 buildTime: 40 solved: true {0,30,37} {1,33,36} {2,7,28} {3,8,26} {4,9,21} {5,27,34} {6,13,20} {10,29,32} {11,24,38} {12,17,18} {14,19,23} {15,22,39} {16,31,35}