The Chain Sudoku puzzle ( Rules of Sudoku Chain) is a puzzle that could come in many size without looking awkward. The main reason is because the regions (the circles attached by a line) could be enclosed in a puzzle. This is not the case with a Sudoku, I cannot figure out a 7x7 Sudoku with 7 regions. But this is possible with the Chain Sudoku. Judge by yourself with these three 7x7 puzzles.
Sudoku Chain 7x7 n 90
The printable files PDF.
Puzzle: sudo_chain_7_000090.pdf
Solution sudo_chain_7_000090_sol.pdf
The printable files PDF.
Puzzle: sudo_chain_7_000091.pdf
Solution sudo_chain_9_000091_sol.pdf
The printable files PDF.
Puzzle: sudo_chain_7_000092.pdf
Solution sudo_chain_7_000092_sol.pdf
I want to remind you that my book Chain Sudoku Challenge
Have a good time !!