nr. 997 - WPC2011 Part 13 - Innovative, Magic Snail

This round contained 13 puzzle genre, most of them were completely new, but not all.This one appeared before the WPC2009 on the Oguz Atay Puzzle Contest 2 and 8.

The first file contain 4 puzzles, and all of them has inside and outside clues. As I know Serkan he likes create elegant puzzles, so this was a bit unusual from me. There were 2 more puzzles the other round, but just the last one has no inside clues. Nevertheless I like this genre. So I wanted to create some puzzles, but I didn't want to make 2 same puzzles.

One of the puzzles was normal, just outside clues. But the other two were more innovative.

The first one have just inside clues, and 4 given number were enough. And there were no number in the alst one. However I marked some empty squares. 

Now I created a very similar puzzle to show those who can't see the WPC puzzles.

A third of the participants solved this puzzle on the WPC, and I hope they enjoyed it, and the new solvers will enjoy this puzzle, too :)

I added more clues than necessary, now the puzzle is solvable without any guess.

Rules: Fill the grid with digit from 1 to 4, so that each digit appears exactly once in every row, column and
every 3x3 spiral. Digits should be placed orderly in the spirals, from the entrance to the center. The numbers
outside the grid indicate the frist seen number from that direction.
Some numbers inside the grid or empty squares ("-") are given.

More puzzles from this genre:

OAPC8

Hungarian Logic Puzzles