Why did he did so?

[soheil_hooshdaran]

I first played Qa5, then I got hint and it said I should find a double attack

[soheil_hooshdaran]

This combination is very complicated
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "New game"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "4r3/p3P1kp/5pp1/qN1Q4/1b6/8/PP2RKPP/8 w - - 0 1"] [PlyCount "7"] 1. Qd7 Kf7 2. a3 Qb6+ (2... a6 3. Nd4 Bc5 4. Qd5+ Kg7 5. Kf3 Bb6 6. Ne6+ Kg8 7. Nf4+ Qxd5+ 8. Nxd5 Bd4 9. Nc7) 3. Kf1 Rxe7 (3... Bxe7 4. Nc7 Qb8 5. Nd5) 4. Qd5+ *

Would you please help streamline it?

[soheil_hooshdaran]

How can this combination be made understandable?
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "New game"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "r1b1kb1r/1p4pp/2n5/pBPQN3/4n3/2P1P3/PP4qP/RN1K3R w kq - 0 0"] [PlyCount "25"] 1. Bxc6+ Ke7 2. Qf7+ Kd8 3. Rf1 Bxc5 (3... Qxb2 4. Qe8+ Kc7 5. Rf7+ Kb8 6. Bxb7 ) 4. Qd5+ Kc7 5. Rf7+ Kb8 6. Bxb7 Bg4+ 7. Nxg4 Qxg4+ 8. Kc2 Ra7 9. Nd2 Nd6 ( 9... Nxd2 10. Qe5+) 10. Qxc5 Nxf7 11. Be4 Qd7 12. Qb6+ Kc8 13. Nb3 *

[soheil_hooshdaran]

What is this combination based on?
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "New game"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "1krq4/1bppn3/1p2pN2/1P2P3/5rP1/3B4/P7/K1RQ3R w - - 0 1"] [PlyCount "13"] 1. Rh8 Qxh8 2. Nxd7+ Ka7 3. Qb3 Nc6 4. Rxc6 (4. bxc6 Bxc6) 4... Qh1+ 5. Bb1 Qf3 6. Rc3 Qxg4 7. Bc2 *

[Roger de Coverly]

What is this combination based on?

Trying to set up Qa4 mate or Qa3 mate, I should imagine.

[soheil_hooshdaran]

What's this combination based on?

[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "4r1k1/5ppp/qnPb1n2/1R4P1/3P4/rPN5/1KPPB2P/2R1Q3 b - - 0 1"] [PlyCount "5"] 1... Ra2+ 2. Nxa2 Qa3+ 3. Kb1 (3. Kc3 Na4+ 4. Kd3 Nb2+ 5. Kc3 Ne4#) 3... Ra8 *

[MartinCarpenter]

A combination of square clearance (a3 for the Q check) and deflecting the c3 knight from going to a4.

[soheil_hooshdaran]

What is this combination based on?
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "2r5/7p/1p2k3/p2pPp1b/Pn1P2r1/1PN1K3/4BR1P/2R5 b - - 0 1"] 1... f4+ 2. Kd2 f3 *

[soheil_hooshdaran]

What is the motiv for this combination?

[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "r1q4r/pp2nk2/2pR1b1p/3p2p1/5B2/6P1/PPPQ1PBP/4R1K1 w - - 0 1"] 1. Rxf6+ Kxf6 2. Qc3+ Kf7 3. Rxe7+ Kxe7 4. Qg7+ *

[MartinCarpenter]

Bishops rule

[soheil_hooshdaran]

What's the logic behid this combination?
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "3qb3/1kr2n1p/1p1p1pp1/pPnPp3/P1N1P1P1/K3NP2/2RQB2P/8 w - - 0 1"] 1. Nxb6 *

[IM Jack Rudd]

There's a cute checkmate: 1.Nxb6 Kxb6 2.Qxa5+! Kxa5 3.Nc4#.

Obviously, black can play 2...Kb7 instead, but then 3.b6 is a lethal double attack.

[Richard Bates]

What is the logic behind asking people to explain the "logic" behind winning combinations?

[John McKenna]

Combinations are the next logical step in translating Seirawan's "Winning Chess" series. Openings, Strategies then Tactics to come, I fear.

[soheil_hooshdaran]

Combinations are the next logical step in translating Seirawan's "Winning Chess" series. Openings, Strategies then Tactics to come, I fear.

It has nothing to do with Winning Chess. I am a chess player and a FIDE Instuctor