Puzzle Description:

Hungaroring. Formula-1-Course in Budapest. With black and white flag at the target line

#1: Kai-Uwe Zickerick (conzick) on Oct 11, 2009

I solved it with much edge logic.
Gator, please prove it. thx

I'm working on it, just not there yet. :)

not too bad once you get C1, just took some looking ahead to see exactly where those 8 should lie.

I cannot see the next step past here:

http://i220.photobucket.com/albums/dd289/Gator621/WPBN-FasterThanAllowed.jpg

Where is the next one?

If you start with the 8 in C1, at the bottom, R23 through R30 will cause rows 3 an 4 to be wrong.
Moving that column of 8 up one square at a time and solving it out, you will continue to find an error until you reach R14 to R21.

The only other option would be R5 to R12, but solving that out will cause an error in R14, so that leaves the only possible placement for that column of 8 to be R14 to R21. It takes some solving out and backtracking, but I still consider that logical solving since you are solving by disproving.

thx, Anthony!

Looking that many moves ahead is considered guessing. Making R30C1 a dot requires looking 2 moves ahead. R29C1 requires looking even more moves ahead. Looking 1 move ahead is definitely considered solvable - 2 moves ahead if it is easy to keep in your head, but not if it is difficult or requires more than 2 moves ahead.

I can easily see how you are disproving the cells, but most people will not be able to see that far ahead. I usually try to find a way to tackle it a different way if I have to look that far ahead.

Sorry, Kai-Uwe, but I can't call this one solvable with logic unless a different way exists to get to the solution with looking so many moves ahead.

I can stand it, Gator. thx anyway!

New version published by conzick.

Now solvable without guessing!

I finally got it on the second attempt. Once I found the correct placement in C1, the rest solved easily. Thanks, Kai-Uwe, for another fun challenge!

Found to be logically solvable by Gator.

I really like way the logic plays out with the 1 clues in columns 33-35. Very nice solve.

And no comment yet on the content! I'm a huge Formula 1 fan, but its coverage in America is virtually non-existent. Only this year have I seen a few races on network or cable TV.

Fun solve!

thx, Bill. For me F1 in these days is not that fun anymore than it was years ago.

Agreed, although upstart VerStappen is regularly tromping Lewis Hamilton lately, which is making competition again.

Also agreed

Goto next topic

You must register and log in to be able to participate in this discussion.