Make resulstChan in runTechniques be a reasonably large buffer, so solve threads don't have to block so often trying to post results. 20% reduction in benchmark time (although not necessarily wall time overall)
Make resulstChan in runTechniques be a reasonably large buffer, so solve threads don't have to block so often trying to post results. 20% reduction in benchmark time (although not necessarily wall time overall)

jkomoros/sudoku,jkomoros/sudoku,jkomoros/sudoku