UK Puzzle Association

Source: sudoku GP website: http://gp.worldpuzzle.org/

Potential issue: having to place other object (ships) in the grid, along to the sudoku digits.

I would like to mention a discussion about this puzzle in the context of the sudoku GP on the GP forum: http://gp.worldpuzzle.org/content/sudoku-gp-2d-round

Note that this example is not to be confused with Battleship Sudoku, which appeared much earlier than this example: https://www.gmpuzzles.com/blog/category ... ip-sudoku/

With this example, the outside sums provide another degree of controversy. For this puzzle they helped more with the placement of battleships as well as the placement of numbers, and both solving elements were crucial

This seems to be in common with Sukaku actually, in that the constructor has given more thought to the rules than a simple hybrid. It's not clear to me whether this moves the solving experience towards or away from Sudoku however, I'd be interested to hear other views here.