The philosophical meeting in Swiss Davos, happening on the turn March and April the year 1929, became a contribution to renewed analysing of foundations Kritik der reinen Vernunft. Kant in its own opus magnum places arguments which into different – at first sight, irreducible to himself - the manner lay out Cassirer and Heidegger. Favoured problems determine the content of my article, wherein – using the addition Zu Odebrechts und Cassirers Kritik des Kantbuches placed into Kant und das Problem der Metaphysik, the spacious Peter E. Gordon's work Continental Divide. Heidegger, Cassirer, Davos and determining the creature of my pronouncement the translation of Andrzej J. Noras Expositions and the disputation in Davos - I make the comparative analysis the tenet of marburgian neo-Kantianist with theorems the author Sein und Zeit.