[Event "Szczawno Zdroj"] [Site "masterchessopen.com"] [Round "0"] [White "Keres, P."] [Black "Arlamowski, E."] [Result "1-0"] [ECO "B10"] [Opening "Caro-Kann: Two Knights, 3...dxe4"] 1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Qe2 { This ticks all the boxes for something odd but playable, and is likely to gain plenty of time on the clock. The fun idea is: } 5...Nbd7 6.Nd6# { . And yes, it did happen! } 1-0