Krishna's trick get's Duryodhana killed

Lord Krishna knew that if Duryodhana was not stopped then the power that passed from his mother Gandhari would make Duryodhana very powerful and impossible to kill. So when Duryodhana was going to meet his mother naked as ordered Krishna appeared at the time and teased him' Oh lord how can a fully grown man can go naked infront of his mother' getting teased Duryodhana hide his lower parts with a banana leaf and run to the place. When Gandhari asked him was he naked he said yes so when she opened the blindfold the rays that came from his mother's eyes turned all his body to diamonds except his thighs that were covered making them vulnerable. Later on Bhisma killed Duryodhana by hitting in that part.