In year 2010 there was one competition for puzzle creations. In fact this was competition to create new puzzle variation. This competition was named Contest for Best Logic Innovation. That time I have created many different new puzzle variations and later posted it on this blog. This puzzle type I created for this contest. That time I named this puzzle as ABC End View in Fences. Another name which I could think about this puzzle that time was ABCD Loop. However I am currently naming it as ABCD Slitherlinks as Fences puzzle is more famously known as Slitherlinks now-a-days.
I am re-publishing this ABCD Slitherlinks puzzle as 1st puzzle in Logical Puzzles Series.
Rules of ABCD Slitherlinks
Enter the letters A to C exactly once, in all of the rows and columns. The letters outside the grid show which letter you come across First from that direction. Each letter uniquely corresponds to numbers 1 to 3. Find this correspondence and use the numbers to solve the Slitherlinks puzzle.
Rules of Slitherlinks
Draw a single closed loop by connecting neighboring dots horizontally or vertically (but not diagonally). A numbered square indicates exactly how many of its edge segments are used by the path.