n: 40 m: 558 packed: 13 density: 0 nodes: 0 solveTime: 20420 buildTime: 180 solved: true {0,3,12} {1,7,13} {2,5,23} {4,18,36} {6,28,39} {8,19,37} {9,10,27} {11,16,33} {14,15,21} {17,30,32} {20,31,35} {22,24,38} {25,26,29}