Fix AI transfer code
Fix AI transfer code

Instead of picking the AI with zero wins or draws, pick the one with the
least wins. Fixes blocked transfer if every game in a pool ends in a
draw just before a transfer.

MarkZH/Genetic_Chess,MarkZH/Genetic_Chess,MarkZH/Genetic_Chess,MarkZH/Genetic_Chess,MarkZH/Genetic_Chess