On the contrary, puzzles can be half the fun, especially if your players are idiots
There is a Young Black Dragon in my world who was literally never meant to be a major issue for any players but currently has EIGHT player character deaths attributed to him, because the first (level 8) party TPKd when they tried to move deeper into his territory to ambush him after he stole one of their bags, and they all drowned in a bog (trying to help each other and the ones who went to help also getting into trouble). Then there was a oneshot where a second (level 5) party went to his lair to avenge the first one and they also TPK’d because he got a surprise round against them.
On the contrary, puzzles can be half the fun, especially if your players are idiots
There is a Young Black Dragon in my world who was literally never meant to be a major issue for any players but currently has EIGHT player character deaths attributed to him, because the first (level 8) party TPKd when they tried to move deeper into his territory to ambush him after he stole one of their bags, and they all drowned in a bog (trying to help each other and the ones who went to help also getting into trouble). Then there was a oneshot where a second (level 5) party went to his lair to avenge the first one and they also TPK’d because he got a surprise round against them.