Optimize n-Queens Counter program
Optimize n-Queens Counter program

While less readable, changes to the code structure and syntax from the
original implementation increased the execution speed by approximately
60% to 70%. The bytecode compiler and optimization increased the
execution speed by an additional 330% to 350%. Thus, the optimized
counter program runs 7 to 8 times faster.

JDSWalker/n-Queens_Problem,JDSWalker/n-Queens_Problem,JDSWalker/n-Queens_Problem,JDSWalker/n-Queens_Problem,JDSWalker/n-Queens_Problem