Arrow Sudoku Puzzle (Daily Sudoku League #197)

Welcome to a puzzle that brings a touch of creativity and emotion to your Sudoku solving! This Arrow Sudoku is one of three puzzles I prepared for the World Puzzle Federation Sudoku Grand Prix 2016 finals. The theme of these puzzles was a face with different emotions, and today's puzzle features a "mouth wide open in surprise." The puzzle uses a classic 9x9 grid with an additional layer of logic involving arrows and circles. The core idea is that the digit in a circled cell must equal the sum of the digits on the path of its arrow, creating a unique and interconnected challenge.

This puzzle is rated as tough, and an experienced solver should expect to spend around 10 minutes on it. It's a great way to practice a classic variant that has appeared in major competitions. The puzzle's design is both strategic and creative, making it perfect for a focused session where you can explore the intricate interplay between the arrow clues and the classic Sudoku logic. Enjoy this well-crafted and thematically engaging puzzle.