Markoshiki – a logic puzzle game

Markoshiki is a logic puzzle game, similar to Sudoku or Futoshiki.
You need to fill the numbers missing from a board, split in four quadrants, which already has some numbers in it.
The rules are simple:
• Numbers grow in a clockwise direction following the arrows.
• Consecutive numbers are in the same row or column as the previous number, but in different quadrants.
• The numbers that are already in the board when you start the game cannot be modified.