Puzzle game type; one partial deck (16 cards); no redeal)

	Game time: Quick
	Difficulty level: Easy
	Skill level: Mostly skill
	Chance of winning: High; about 1 in 3; 33.3%

Object of the game: To exchange places of the black and the red Jacks and obtain four columns of Jacks in alternating colors in the fewest possible moves.

Solitaire Rules

Tableau

(16 cards in 4 rows of 4)

• You can interchange Jack positions as often as you please until you obtain the desired result.

• To switch the position of two Jacks, click on a Jack and drag the card to the location you wish to place it.

• Jacks (Knights) move according to the chess rule: "from corner to diagonally-opposite corner of a rectangle three squares by two"; in other words, Jacks move one place up, down or sideways plus one place diagonally.

• The game is won if all the Jacks are arranged in alternating color, as shown in the following scheme:
  JJ JJ
  JJ JJ
  JJ JJ
  JJ JJ

• The game is considered won if you finish the game within 8 moves.

Scoring

• The game starts at: - 52.

• 10 points are awarded for each card correctly placed.

• 5 points are deducted for each move.

• The highest score obtainable is 108.