Author: Vladimir Portugalov
Place a number from 1 to 8 in each empty cell in the grid such that each row, column and marked 8-cell box contains each number exactly once. The clues outside the grid indicate that the first two cells in the corresponding direction must contain numbers matching the description. Odd = /1, 3, 5, 7/; Even = /2, 4, 6, 8/; Big = /5, 6, 7, 8/; Small = /1, 2, 3, 4/.
Grid control: Click at a cell reveals the value chooser. Click at the selected value changes the state of the cell. More details about grid control are at the help page.