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[FEN "4r3/pq3k2/1p4p1/2p1Qn1p/2PpN3/3P4/PP3PPP/R5K1 w - - 0 1"]

It is White to move the above position.

After Ng5 check, the Black king can go only to g8 or f8.

If the Black king goes to g8, they lose their rook. After Kf8 by Black, what is White's best move?

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  • Not sure why you have tags like strategy , positional-play, and planning. Simple tactics picks of the queen in a couple of moves, when black should just resign. Unless black doesn't know how to resign, further planning is just moot.
    – John Coleman
    Sep 16, 2019 at 13:40

2 Answers 2

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White is easily winning in this position. Here is the best continuation according to Stockfish. I would trust Stockfish on this one since it should be pretty easy for a good tatictal player to figure out themselves.

 [FEN "4r3/pq3k2/1p4p1/2p1Qn1p/2PpN3/3P4/PP3PPP/R5K1 w - - 0 1"]

1. Ng5+ Kf8 2. Qh8+ Ke7 3. Re1+ Kd6 4. Qxe8 Qd7 5. Qxg6+ Kc7 6. Ne6+ Kb8 7. Qxf5 a5 8. Nxd4 Qxf5 9. Nxf5 a4

White is now two pawns and two pieces up. It is an easy stroll to victory lane from here.

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  • Stockfish may give that line initially, but it changes a bit as you play it - White has a forced mate in 6 after 4...Qd7. (It gives 5.Qb8+ Kc6 6.Nf3 Qe6 7.Rxe6+ Kd7 8.Qe8+ Kc7 9.Rc6+ Kb7 10.Qc8#.)
    – D M
    Sep 15, 2019 at 4:33
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Best is 2.Qh8+ Ke7, after which White has a choice:

  1. Go for 3.Qh7+ Kf6 4.Qxb7 Kxg5, when White has won a queen for a knight with a completely winning position.
  2. Go for 3.Re1+, which is slightly more complicated but leads to a forced mate according to Stockfish:
 [FEN "4r2Q/pq2k3/1p4p1/2p2nNp/2Pp4/3P4/PP3PPP/R5K1 w - - 0 3"]

3.Re1+ Ne3 4.Qg7+ Kd6 5.Qxb7 Re7 6.Qb8+ Kc6 7.fxe3 Rb7 8.Qa8 a5 9.exd4 cxd4 10.Qc8+ Rc7 11.Re6+ Kc5 12.Qf8+ Re7 13.Qxe7#.
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  • 2
    a) is already crushing. I don't think that over the board I would even bother working out b) once I noticed a).
    – John Coleman
    Sep 16, 2019 at 13:43
  • 2
    @John Coleman I possibly wouldn't either, but it felt wrong not to include the path to a forced mate.
    – Inertial Ignorance
    Sep 17, 2019 at 3:27

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