This solves the deducktion game as shown at https://www.smartgames.eu/uk/one-player-games/deducktion
Rules: The board is 4 x 3 squares and you are provided with 3 green, 4 red, 5 yellow ducks. The ducks are numbered in each family.
Place all ducks on the game board. Each challenge gives specific hints about the location of some ducks. Ducks of the same colour family must form a numerically ascending chain by being placed adjacent to each other (horizontally or vertically).
lein run