White to play and win
W Leick, Vossische Zeitung 1922
The solution is easy enough: 1.g7 Rg3 2.Bxb3+! Kxb3 3.Rd3+!, deflecting the black rook away and picking up the bishop on c8, after promotion. However, there is one little extra trick. After 3...Rxd3 4.g8(Q)+ Kb2! White must not grab the bishop at once, as after 5.Qxc8? Black has perpetual check with 5...Ra3+ 6.Kb4 Rb3+, etc, since the white king cannot cross the c-file. Instead, White must interpolate the check 5.Qh8+!, fatally weakening the position of the black king, which cannot maintain control of all three of the squares a3-b3-c3. For example, after 5...Ka2 6.Qxc8, and now the checks run out after 6...Ra3+ 7.Kb4 Rb3+ 8.Kc4.
Another relatively simple, but nonetheless elegant and enjoyable study by this neglected German composer.