Possession is 9/10ths of the Law...

Richard definitely HAD the boys when they were last seen...

Henry may have benefitted from their death but didn't have them in hand to kill...

They were absolutely no weapon for Richard to use to stop Henry... the claim "these boys have more right to the throne than HE does" cuts against Richard as well...

Sir James Tyrrel, loyal servant to King Richard III, confessed to the murder of the children & burying them under a staircase in the Tower of London before he was executed...

Bones WERE found some 150 years after the confession under a stone stairway... The crown has treated them as the rightful remains ever since.

Jammer