Open Fire!, known as Fire! (発射!) in the Japanese version, is the fourth Duel Puzzle in Yu-Gi-Oh! Ultimate Masters: World Championship 2006.


  1. Attack "Gadget Soldier" with "Amazoness Chain Master".
  2. Activate the effect of "Amazoness Chain Master" to add the opponent's "Kuriboh" to your hand.
  3. During your Main Phase 2, Normal Summon "Kuriboh".
  4. Activate "Multiply", tributing "Kuriboh" to Special Summon 4 "Kuriboh Tokens".
  5. Activate "Cannon Soldier's" effect to tribute all the "Kuriboh Tokens" and finally "Cannon Soldier", inflicting 2500 damage.

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