[Event "New to nuke: Opening queen tactics: Qh5-g5-# diagonal"] [Site "https://lichess.org/study/sRM1FScZ/W22evCxr"] [Result "*"] [Variant "Atomic"] [ECO "?"] [Opening "?"] [Annotator "https://lichess.org/@/Illion"] [UTCDate "2017.08.23"] [UTCTime "20:30:28"] [Source "https://lichess.org/study/sRM1FScZ/W22evCxr"] [Orientation "white"] 1. Nf3 (1. d4 Nf6 2. f3!? e6 3. Nh3 Ne4 4. fxe4?? { 4. Ng5 f5 5. fxe4 was necessary. Now black has mate. } 4... Qh4+ 5. g3 Qg4 { [%csl Rd1,Re2][%cal Rg4d1,Rg4e2,Bd8h4,Bh4g4] } 6. Ng5 Qxe2#) 1... f6 2. Nc3 Nh6 3. Ne5 fxe5 4. e4 c6?? { Defends against Nb5, Nd5 and Qd5, but white's threat lies elsewhere. 4...Ng4 5. f4 was better first to close the queen's diagonal. } 5. Qh5+ g6 6. Qg5 { Because black's e-pawn hasn't yet moved, Qg5 is immediately lethal. You might also have recognised Qe5 as another tactic, but here that "only" wins material. } { [%csl Re7,Rd8][%cal Rg5e7,Rg5d8,Bd1h5,Bh5g5] } 6... Ng4 7. Qxe7# *