Siege Solitaire

Remove all of the enemy troops before your reserves run out.

Infantry does double damage to artillery and half damage to tanks. Additionally, when they die the card below them immediately attacks.

Artillery does double damage to tanks and half damage to infantry. Additionally, any leftover damage after a kill will be split between the two other piles.

Tanks do double damage to infantry and half damage to artillery. Additionally, after every kill, they get to attack again.