We have Non-Consecutive Sudoku where no two consecutive numbers touch each other, then there is Touch Sudoku where each number has to be touched by at least one of its consecutive number. I love both of these Sudoku types. Recently I have created many of the Touchy Sudoku puzzles most of which is already published on this blog. Also, there are few Touchy Sudoku variations puzzles, I will be creating. This page will give links to all the Touchy Sudoku and its variation puzzles which are published here.
Touchy Sudoku can be solved by keeping track of all the numbers which are touching to its consecutive numbers. While solving Touchy Sudoku type, keep crossing all the numbers which are touching to its consecutive numbers and then we will be left with few possibilities for the numbers which are not yet touching to its consecutive. Now concentrate on such numbers to eliminate many possibilities around its neighbours.
Rules of Touchy Sudoku
Classic Sudoku Rules apply. Additionally, each digit has at least one consecutive adjacent (sharing edges) neighbour.

Touchy Sudoku (Daily Sudoku League #94)

In Addition, there are many different Touchy Sudoku variations published on this website. Links to these variations are given below. Rules of each of the variables are explained in the target post.

Touchy Trio Sudoku (Daily Sudoku League #139)

Checkout more Sudoku Variations by clicking on the below image
 Sudoku Variations Main Page