Zugzwang - Black is pinned B Thelen vs F Treybal, 1927  (D66) Queen's Gambit Declined, Orthodox Defense, Bd3 line, 49 moves, 1-0 The Immortal Samisch vs Nimzowitsch, 1923   (E18) Queen's Indian, Old Main line, 7.Nc3, 25 moves, 0-1