The Fhourstones benchmark at http://tromp.github.io/c4/fhour.html http://tromp.github.io/c4/fhour.html solves the 7x6 game in under 2 minutes. The "make C476" v

The Fhourstones benchmark at http://tromp.github.io/c4/fhour.html http://tromp.github.io/c4/fhour.html solves the 7x6 game in under 2 minutes. The "make C476" version at https://github.com/tromp/fhourstones88 https://github.com/tromp/fhourstones88 also maintains a book, allowing for much faster replies.