n: 30 m: 138 packed: 10 density: 0 nodes: 0 solveTime: 280 buildTime: 10 solved: true {0,16,19} {1,9,24} {2,14,15} {3,8,22} {4,10,11} {5,12,27} {6,20,25} {7,18,21} {13,17,28} {23,26,29}