n: 40 m: 456 packed: 13 density: 0 nodes: 0 solveTime: 20480 buildTime: 120 solved: true {0,13,33} {1,8,14} {2,15,18} {3,5,27} {4,23,34} {6,22,36} {7,9,16} {10,19,39} {11,26,30} {12,20,25} {21,24,37} {28,31,32} {29,35,38}