One of his earlier designs was a game he called 'Pagoda'. This was essentially a 3-dimensional version of noughts and crosses or tic-tac-toe, which he devised in the 1950s but never pattented. He was keen to point out that for this game to be effective it required a 4 by 4 by 4 design, that the more ubiquitous 3 by 3 by 3 version subsequently generally available was pointless as whoever took the central point had an immovable advantage. An example of DRFC's game is shown left played by his two grandsons.