Puzzle Description Suppressed:Click below to view spoilers

#1: RB (rb2013) on Jul 1, 2016 [HINT]

In case you get stuck, see this HINT for help.

First, LL, you get a very few cells painted.





If you are watchful, you may recognize c8r8 is a dot (LLS as well). However, it won't really help.






Then comes some more logic to help solve the puzzle: edge logic in the rightmost coloumn.

Clue '7' can go to pozitions from r1-r7 to r10-r16 (because of clue 3).
Now look at the rightmost clues in rows 8-15. All of them are bigger than 1.
Afterwards turn your eyes on row 19. There aren't any clues bigger than 3. So that if the 7 clue in c20 covered at least 4 of rows 8-15, in c19 there would be 4 adjacent black cells which would cause contradiction.

That means the bottom black cell of clue 7 can go into row 10 or any of the upper ones. Therefore in c20 r4-r7 cells are black.

After that, more LL. (We can either continue edge logic for clue 3 in c20, but not important. r8-r13 are dots.)





/Deep lookahead comes next, but not guessing!/
Now if
c16r6 were a dot then
c16r3-r4 are dots
r2c11-c12 are black (clue 5) then
c11r1 and c11r3 are dots (clue 1) so
r3c12-c15 are dots, and
r1c12 is black
r1c13-c14 are black, too and c15 is a dot (clue 3)
so r2c12-c13 are black, and r2c14 is a dot
aaand finally, contradiction in r2 (clue 5 doesn't have right place).
So c15r6 cannot be a dot,
!!c15r6 is black!!.

LL finishes from this position.



If you have any better idea, please share it, I'd be pleased!
I hope you enjoyed the puzzle, especially the pic.

Bálint

I like the image very much! I had to start over 3 times! I usually don't do puzzles that have deep lookaheads or that have guessing, but this was small enough to work on and not get frustrated.

Szép volt, Bálint :)

Köszi Thomas!

fun solve.... I went straight to the el. the 7 in c20 is limited to r's 1-8

Comment Suppressed:Click below to view spoilers

Fun solve

Show: Spoilers

Goto next topic

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