Poisoned sword
Hamlet engages in swordplay with Laertes, whose sword is poisoned. Hamlet is wounded first, but later switches swords and stabs Laertes. So the plan to kill Hamlet both succeeds and backfires at the same time.
Poisoned sword
does* and it's a duel that was set up before by Laertes and Claudius to kill Hamlet. For Laertes because Claudius told him that Hamelt murdered his brother and for Claudius so Hamlet doesn't spill the secret that Claudius murdered Senior Hamlet.
Polonius, Ophelia, Gertrude, Hamlet, Claudius, and Laertes.
Technically, King Cladius Kills Gertrude in Hamlet, but not intentionally. King Cladius poisons the wine for Hamlet to drink but he refuses it to keep fencing Laertes but when hamlet makes the second strike the Queen wants to drink to him and when she does she drinks from the poisoned cup and dies.
Hamlet kills Claudius by stabbing him with the poisoned sword Laertes carried and by forcing Claudius to drink the dregs of the poisoned drink which killed Gertrude.
Because by that point King Claudius knows that Hamlet knows the truth about king Hamlet's death, so he tries to get rid of Hamlet using Laertes.
First, Laertes stabs Hamlet with it. Then Hamlet takes it from Laertes and stabs Laertes with it. Then Hamlet stabs Claudius with it before forcing the poisoned wine down Claudius' throat.
Hamlet is told by the ghost of his father that he was murdered by Hamlet's uncle Claudius who is now the king and Hamlet's stepfather. In the process of pursuing his revenge, Hamlet kills Polonius, Claudius's counsellor and the father of Hamlet's girlfriend Ophelia. Ophelia goes mad and dies, and her brother Laertes comes vowing vengeance for his father's death. Laertes and Claudius plot Hamlet's death, but although Hamlet is mortally wounded, their plot misfires, killing Hamlet's mother and Laertes. Hamlet kills Claudius before he, too, expires.
Hamlet didn't write any letters to Laertes--ah, you mean "Did Claudius read the letter Hamlet wrote to Claudius out loud to Laertes?" I confess that it is difficult to phrase this question so it is unambiguous. Yes, Claudius reads the letter he got from Hamlet out loud to Laertes and asks whether Laertes can explain it.
does* and it's a duel that was set up before by Laertes and Claudius to kill Hamlet. For Laertes because Claudius told him that Hamelt murdered his brother and for Claudius so Hamlet doesn't spill the secret that Claudius murdered Senior Hamlet.
Polonius, Ophelia, Gertrude, Hamlet, Claudius, and Laertes.
Claudius and Laertes plot to kill Hamlet.
As he is dying, Laertes tells Hamlet.
Laertes conspires with King Claudius
In the final scene, Laertes and Claudius have set in motion plans to have Hamlet killed. The question is, Will they succeed? and Will Hamlet ever get around to killing Claudius? The moment Hamlet is touched by Laertes's sword, we know the answer to the first question is "yes". There are still a few moments of suspense before we find out the answer to the second.
Laertes is the son of Polonius and brother to Ophelia whom Hamlet loves. King Claudius poisons Laertes's sword with the intent to kill Hamlet in the tragedy play by Shakespeare titled Hamlet.
They have different motives. Claudius wants to keep his crime a secret, and Laertes wants revenge for his father's death.
Claudius knew. That's why he conspired with Laertes to kill Hamlet first.