Four color theorem: A fast algorithm

These are the OLD and NEW (last column) execution times on my new laptop:

• 100 – 196 vertices, 294 edges = 0 seconds – 0 seconds
• 200 – 396 vertices, 594 edges = 1 seconds – 0 seconds
• 300 – 596 vertices, 894 edges = 4 seconds – 1 second
• 400 – 796 vertices, 1194 edges = 6 seconds – 1 second
• 500 – 996 vertices, 1494 edges = 8 seconds – 2 seconds
• 600 – 1196 vertices, 1794 edges = 10 seconds – 4 seconds
• 700 – 1396 vertices, 2094 edges = 16 seconds – 6 seconds
• 800 – 1596 vertices, 2394 edges = 18 seconds – 7 seconds
• 900 – 1796 vertices, 2694 edges = 22 seconds – 9 seconds
• 1000 – 1996 vertices, 2994 edges = 26 seconds – 11 seconds