Number Logic Puzzle 20255
Less Than (or Greater Than) Sudoku has no given clues (digits). Instead, there are "greater than" (>) or "less than" (<) signs between adjacent cells, which signify that the digit in one cell should be greater than or less than another.
The goal is to fill a grid with digits so that each column and each row contain the digits only once.
This puzzle has Rectangular Blocks. Every block contains each of the digits only once.This puzzle has a Diagonal Variant. Every diagonal line contains each of the digits only once.