Chess study with zugzwang positions – Study by Peter Krug

Review of a chess study by Peter Krug, which he published in 2007, but which was noted as cooked in the Harold van der Heijden database, only because Peter Krug did not state the chess study up to the sixth move, but played through to mate. For comparison, there is the chess study by Theodorus Kok, where White also plays 1. Na8 as the key move. Here, too, the study should stop earlier and then it would be correct.