Konter a Matt jack 1, 10 and 9 nothing. At the beginning of one game, the trump suit is fixed. Additionally, three cards are always trumps: the queens of spades Q, hearts Q and diamonds Q are always trumps. This is what gave the name to the game: the two queens of hearts Q and diamonds Q are the two Kontra trumps, the queen of spades Q is the “Matt”. As a consequence, in a match, depending on which suit is the trump, there are nine or eight trumps, four possibilities, the value of the cards is as follows (from highest to lowest,
Common value auction case, where there is always a SBNE (see first-price sealed-bid auction). The following example is based on. There are two bidders participating in a second-price sealed-bid auction for an object. Each bidder "i" receives signal "si"; the signals are independent and have continuous uniform distribution on [0,1]. The valuations are: where formula_5 are constants (formula_6 means private values; formula_7 means common values). Here, there is a unique SBNE in which each player bids: This result is in contrast to the private-value case, where in SBNE each player truthfully bids his value (see second-price sealed-bid auction). This example is suggested as