n: 40 m: 191 packed: 13 density: 0 nodes: 0 solveTime: 540 buildTime: 20 solved: true {0,28,38} {1,14,18} {2,3,26} {4,16,17} {5,15,24} {6,20,37} {7,29,33} {8,10,30} {9,21,35} {11,27,34} {12,31,39} {13,23,32} {22,25,36}