"To Fuse Monsters?" (モンスターを融合 (ゆうごう) するには?, Monsutā o yū Gōsuru ni wa?) is a Duel Puzzle in Yu-Gi-Oh! Duel Monsters 5 Expert 1.


The player has 1000 Life Points. Their hand contains "Blue-Eyes White Dragon", "Polymerization", "Tyhone", "Right Leg of the Forbidden One" and "Left Arm of the Forbidden One" and their field contains two copies of "Blue-Eyes White Dragon" in Attack Position.

The opponent has 3000 Life Points, "Flame Swordsman" in Defense Position" and "Alligator's Sword" in Attack Position.

The player is given the hint, Fusion is when you fuse two or more specific monsters to form a powerful monster. You must have all the monsters required for the Fusion in your hand or on your field.


  1. Activate "Polymerization" to use the three copies of "Blue-Eyes White Dragon" to Fusion Summon "Blue-Eyes Ultimate Dragon" in Attack Position.
  2. Enter the Battle Phase.
  3. Attack "Alligator's Sword" with "Blue-Eyes Ultimate Dragon".
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