# Puzzle No. 272, 273 : A Descriptive Pairs Sudoku and a Descriptive Pairs Snake

Daily League Update :

Earlier today/yesterday, depending on the part of the world you’re in, Tom Collyer shared his contribution for Friday, a Classic Sudoku.

Also, Tom has made a nice document with Week 1’s 4 Sudokus and you can view that pdf here. The pdf also features the best timing from our little group of solvers, and an interpretation from that of the target times for different solvers.

Now to today’s pair. The Snake is small and maybe easy, but I was pretty adamant to get a Snake variant into this series and this seemed to work well. The Sudoku came out nicely and I actually think more can be done with this type. I’d rate it at a medium.

For 272 : Follow regular Sudoku rules. Additionally, for every pair of outside clues X and Y, at least one of these cases is true :

1) X is in the Yth position in that direction.

2) Y is in the Xth position in that direction.

For 273 : Locate a Snake of one-cell width in the grid, that does not touch itself even diagonally. The snake travels in sequence 1-2-3…9-1-2-3…9 and so on. The length of the snake is unknown but head and tail are given.

for every pair of outside clues X and Y, at least one of these cases is true :

1) X is in the Yth position in that direction.

2) Y is in the Xth position in that direction.

Enjoy!

P272

P273