Knight and a Bishop - for a Rook

drmrboss

The 7 men TB also tell us that there are still about 440 million positions that are forced win for either side but still draw in current chess rule. For example, this position is a forced white win in 294 moves but it is still a draw if you apply stupid 50 moves draw rules  FIDE rule) in chess.


ChungYin

@drmrboss wow 401 billion positions! How much time did the computer spend checking all these positions? Also interestingly that last position you showed looks more favorable to black at first glance, I would have picked to play as black at in that position.

harbi_canoshi

Usually it is a pawn and a rook for a bishop and knight. 

drmrboss
ChungYin wrote:

@drmrboss wow 401 billion positions! How much time did the computer spend checking all these positions? Also interestingly that last position you showed looks more favorable to black at first glance, I would have picked to play as black at in that position.

AFAIK, A single Chinese guy called "Boujun Guo or noobpwn" spend about 4 months with 32 cores machine, with better technology aided by Ronald De Man. There are about 100+ posts in talk chess about details technology. http://talkchess.com/forum3/viewtopic.php?f=7&t=66797

 

 

In comparison, it is a better technology than Lomosov TB from Russia in about 5 years ago where Lomosov took approx 2 years with 200+ cores cluster computer power to solve those positions (still not 100% complete for 7 men)