White to play and mate in 4 - #18
Tijdschrift N. S. B. - 1912
1.Nc5 Kd6 2. Rd7 chk Kc5 3. b4 chk
1.... Kd4 2. Nf5 chk Kd5 3. Bd1
1.... g2 2. Nb5 g1 D 3. Bf3 chk
1.... __ 2. __ g1 N 3. Bd1
1.... a6 2. Kb6 Kd4 3. Nf5 chk
1.... __ 2. __ ~ 3. Rd7
