This page offers Sudokus with 10x10 cells and various area patterns for download.
As 10 cells cannot be arranged as square, the MaaTec
Sudoku program creates
10x10 Sudoku puzzles with different non-square area patterns. These pattern
variants are named as follows:
The patterns 'Ladder 2' and 'Diamond' are contained in the 'Wood & Glass'
package that you can download from the Boards page.