The Hollows and Sudoku 20160622_074137-2 Sizes: 150 × 150 / 300 × 168 / 768 × 431 / 1,024 × 575 / 300 × 300 / 600 × 337 / 100 × 100 / 175 × 131 / 891 × 500 / 2,560 × 1,436