Since... 1994!

Find mate in 4 moves

1. CELIZIN.

(White: Kc1, Nb2, a7, g7. Black: Ka1, Ba2, c2.)

mate in 4 moves

Solution

2. Siskov, 1979.

(White: Kf5, Ne7, e3, f2, g2. Black: Kh4.)

mate in 4 moves

Solution

3. Ariakov, 1977.

(White: Ke5, Qf1, Ne4. Black: Ke3, d4, e6.)

mate in 4 moves

Solution

4. Giegold, 1968.

(White: Kg2, Rb1, Nb6, Bh4, Bh5, a2, a4, d2, d6, e3, e5. Black: Kc5, a3, b7, c6, d3, d7, e4, e6, g4.)

mate in 4 moves

Solution