why is nc5 a inacuracy ?

"this was very bad "

• The move was bad, but caused by not using enough time.
  You have a winning position, you have plenty of time, use that time to make sure you convert a win.

@tpr said ^

And 5-7 minutes on 1 puzzle is not boring?

it is , but i read that they are important for improvement , i wish i could do them faster

"i read that they are important for improvement"

• Puzzles are overrated.

"i wish i could do them faster"

• No, play slower.

@tpr said ^

"i read that they are important for improvement"

• Puzzles are overrated.

"i wish i could do them faster"

• No, play slower.

can you explain why they are overrated ?

why they are overrated ?

• In a real game nobody tells your there is a tactic, or for whom.
  In a puzzle you get the perspective of the winning side, like in the example above you are the victim of a double attacK;
  The puzzle does not teach you how to reach such a position either.

Here is another example.
You have the advantage of the bishop's pair, you have 12 minutes on your clock.
You miss a very simple tactic: a discovered attack from your opponent.