We have prepared a short series of Sudoku puzzles for you, featuring Bratislava and Slovak emblems. We’re kicking things off with a fun UFO sudokuwhich combines four different constraints at once, but it shouldn’t take you much time. You can print it out from PDF or solve online.
Instructions: Classic sudoku rules apply. In the thermometer, digits must strictly increase starting from the bulb to the tip. The digits on the lines must form a palindrome and be read the same in both directions. Cells with a circle must contain an odd digit, and cells with a square must contain an even digit.