Despite Mamai's loss to Dmitri of Muscovy…
1380 CE
Despite Mamai's loss to Dmitri of Muscovy in 1380 and two subsequent failed attacks by Tokhtamysh, he continues to rule until his assassination in this year in Kaffa (Crimea) by the Genoese, who cannot forgive the total waste of a military unit of Genoese crossbowmen who had been slaughtered by the Russians at Kulikovo.