Since... 1994!

Find mate in 6 moves

(White: Kg1, Qd5, Ra1, Rf1, Ba4, a2, b2, c2, e4, f2, g2, h2. Black: Ke7, Qf6, Ra8, Rg8, a6, b5, c5, d7, e5, f7, h7.)

mate in 6 (Black moves)

Solution

Sevitov, 1938

(White: Ke8, Nd7, Be5, b5, e4, f2. Black: Ke6.)

mate in 6 (White moves)

Solution