The Pocket Gallery Volume 4, Hard

The Hard Bonus

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You found it on page 223. Here is what waits for you.

• 04Star sudoku: a six-pointed star of triangles.
• 04Circle sudoku: four rings, digits 1 to 8.
• 04Samurai sudoku: five grids that overlap at the corners.
• 04Gallery Challenge grids, with only 23 clues.
• 04illustrations to trace in ink.