[Event "Teters 2016"] [Site "BCC"] [Date "2016-07-28"] [White "Jason Barnett"] [Black "Rod Jacobs"] [WhiteElo ""] [BlackElo "1659"] [Result "0-1"] 1.Nc3 {The Dunst. (It has many other names.) Apparently it often transposes into the French, Caro-Kann or closed Sicilian. Not having seen it before, I tried to turn it into a Queen's pawn game where White has broken Purdy's maxim of never in such openings blocking your Queen's Bishop pawn (it being needed for leverage in the centre.) (RJ)} d5 2.d4 Nf6 3.h3 e6 4.a3 {The engines don't see anything wrong with this or White's preceding move, but they allow White to fall behind in development. (RJ)} c5 5.Nf3 Nc6 6.e3 Bd6 7.Bb5 O-O 8.Bxc6 bxc6 9.dxc5 Bxc5 10.b4 {These manoeuvres leave White weak on his queenside white squares. A bit dangerous when Black is left with the only white squared bishop.(RJ)} Bd6 11.Qd4 Qc7 {Preparing to meet a possible 12. e4 with .....e5. (RJ)} 12.e4? {White shouldn't be thinking about opening the game up when he is behind in development and not castled, and particularly with Ba6 threatened. (RJ)} e5 13.Qd3 d4 14.Ne2 a5 15.Rb1 Ba6 16.Qd2 Nxe4 17.Qd1 Bxe2 18.Qxe2 Nc3 19.Qd3 Nxb1 20.Qb3 axb4 {Happy to go into 21. Qxb1 ba with a nasty passed pawn and Rfb8 threatened. RJ)} 21.axb4 Nc3 22.Bb2 Nd5 23.Ba3? Rxa3 24.Qxa3 Bxb4+ {#R}