[off-topic]
There's another cheat that doesn't effect the score, but can get you developed really damned quick: the instant improvement cheat. Take a settler, have it irrigate/mine/road/other. Press Tab (so that you get the white box, it might also be "V"), center the box on the settler, and press Enter. The settler will start flashing again, whereupon you again press I/M/R/O. Repeat until the improvement is complete. After you made your improvement, you cannot get the settler to move again until the next turn.
Repeat for
every settler on
every turn.
[/off-topic]