I was wondering what the comment about avoiding 6000x2 meant, so I searched on it and found out that according to http://strategywiki.org/wiki/Mappy/Walkthrough:Patwos wrote:Here's a slightly better translation for you of the three posts in the snapshot using my favourite Japanese to English translation service...
Post#2
The sophistication of the feel of the cat leading the way, including outside of the screen, the way it avoids 6000x2... It is impeccable in every way. I will make it my family treasure.
The most number of points you can be awarded is 12,000, which is awarded for catching 10 cats, including Nyamco. Be careful, a glitch occurs in the Arcade version that gives only 1,010 points when 6000x2 points is earned. Be sure that the glitch is fixed in your version.
Actually, I like it more than Mappy, but that's just me I guess.