(difficult) Mate in 6 Puzzle, Theme: Blackburne's Mate checkmatesblog Updated: May 23, 2016, 9:36 AM | 2 This is a mate in 6 puzzle. The theme is: 'Blackburne's mate'. This is an example of the Blackburne's mate: The puzzle: Did you like this puzzle? And did you solve it? Let it know in the comments if you want.