The Duke is a game that I had lying in the cupboard for quite some time because there was simply no opportunity for it - and I had practically given up on it. Then I planned it for our Mauritius vacation and played it several times with Juliana. It is definitely not Juliana's favorite game, but I had a damn good time with it. Basically, it's a much more variable chess with a certain element of chance. You start with the same - few - pieces on the board and can either move a piece with each move or bring a new piece into the game. To do this, pieces (square tiles with printed movement patterns) are turned over when activated, thus constantly changing their movement pattern. The result is a surprisingly interesting concept with very interesting strategic situations. I don't know if I'll ever get Juliana to play it again outside of beach vacations (for which it is ideal because of its very robust components), but it will definitely stay in my collection.