n: 40 m: 428 packed: 13 density: 0 nodes: 0 solveTime: 17420 buildTime: 100 solved: true {0,1,6} {2,9,25} {4,11,28} {5,31,33} {7,8,16} {10,24,37} {12,20,22} {13,21,36} {14,27,30} {15,19,32} {17,23,34} {18,26,39} {29,35,38}