Thomas comments on Open thread, July 24 - July 30, 2017

Thomas 24 Jul 2017 7:32 UTC
1 point
An easy problem this time?
- Gurkenglas 24 Jul 2017 7:56 UTC
  0 points
  Parent
  6 queens on A1, C3, G3, C6, G6 and H8 are an upper bound.