solved: true
(0,0)(1,1)(2,2)(3,3)(4,4)(5,5)(6,6)
(1,2)(3,6)(6,4)(0,5)(5,3)(4,1)(2,0)
(2,1)(6,3)(4,6)(5,2)(1,0)(0,4)(3,5)
(3,4)(5,0)(0,3)(6,1)(2,5)(1,6)(4,2)
(4,3)(0,2)(1,5)(2,6)(3,1)(6,0)(5,4)
(5,6)(4,5)(3,0)(1,4)(6,2)(2,3)(0,1)
(6,5)(2,4)(5,1)(4,0)(0,6)(3,2)(1,3)
45780[+0] millis.
30435[+0] nodes