Why did he did so?

[soheil_hooshdaran]

How do you explain this combination?
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "1k1r4/p1p5/1bp2P2/4q3/4NPbr/3P2P1/PP1Q1PB1/5RK1 b - - 0 1"] 1... Rh1+ 2. Bxh1 Qh5 3. Bg2 Rh8 4. Re1 Bf3 5. Nd6 cxd6 6. Bxf3 Qxf3 * *

[Barry Sandercock]

What combination ?

[soheil_hooshdaran]

I editted my post

[Barry Sandercock]

That's better. Black just makes use of the open h file and plays a routine setup to mate with Queen and Rook.

[Roger de Coverly]

How do you explain this combination?

Should the Black King be on c8? Otherwise the immediate 5. .. Qh1 is mate.

It's a Dragon style attack against a King and fianchettoed Bishop. As Fischer put it, open the h file, sac, sac, mate.

[Ian Thompson]

How do you explain this combination?

1... Rh1+ 2. Bxh1 Qh5 3. Bg2 Rh8 4. Re1 Bf3 5. Nd6 cxd6 6. Bxf3 Qxf3 *

I'd have played 5...Qh1+ if I'd been black.

[Christopher Kreuzer]

How do you explain this combination?
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "1k1r4/p1p5/1bp2P2/4q3/4NPbr/3P2P1/PP1Q1PB1/5RK1 b - - 0 1"] 1... Rh1+ 2. Bxh1 Qh5 3. Bg2 Rh8 4. Re1 Bf3 5. Nd6 cxd6 6. Bxf3 Qxf3 * *

Are you sure you haven't posted this before? It looks very familiar.

1...Rh1+ is a forcing move, and the rook on h4 needs to move anyway to prevent White playing gxh4. If 2. Kxh1, then 2...Qh5+ transposes to a later point in the game line.

3.Bg2 is needed to prevent Black playing 3...Qxh1+, 4...Bf3+ and 5...Rh8, with mate on h1.

There is a similar threat after 4.Bf3. If the position is correct (maybe the Black king is on b7 or c8?), then Black missed a slightly quicker win with 5...Qh1+.

[soheil_hooshdaran]

thx folks

[soheil_hooshdaran]

What's the motif for this combination?
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "k2r3r/1pB2bp1/p3Rn2/3p3p/Bbp5/2N2P2/PPP3PP/R4K2 w - - 0 1"] 1. Rxa6+ bxa6 2. Bc6+ Ka7 3. Nb5+ axb5 4. a4 *

[Michael Farthing]

The motif is sheer poetry. That is beautiful.
More seriously the black king is already limited to the a file. At each stage of the combination one of the three men between the killer rook on a1 and its victim on a8 is moved out of the way and poor black at each stage has only one move. Oh it is so cruel!!

[soheil_hooshdaran]

Would you please explain this to me?
What is the motif?
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "1k1r4/p1p3b1/Qpn1p2p/2P1q1p1/4P3/2N1B1P1/P4P1P/1KR5 b - - 0 1"] 1... Rd1 2. Rxd1 Qxc3 3. Qb5 Nb4 4. Rd8+ Kb7 5. c6+ Nxc6 6. Rd3 Qe1+ 7. Bc1 Qxe4 8. f3 Qg6 *

[Roger de Coverly]

What is the motif?

You could describe the initial move, .. Rd1 as a deflection sacrifice. The rest of it is a long variation where Black gains material as the R on d3 remains pinned and White cannot escape the pin. Black would still have work to do to convert to a win.

[soheil_hooshdaran]

Please help me understand this very complicated combination
[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "5rk1/pppqn1pp/5p2/2Pn4/3Pr1P1/1B6/P1PB2P1/R2Q1RK1 w - - 0 1"] 1. Qf3 Rxd4 2. Rad1 c6 3. c3 Rxg4 4. c4 Nc7 5. Bf4 Qc8 6. Bxc7 *

[Roger de Coverly]

Please help me understand this very complicated combination

Black started to grab pawns and a piece dropped off through an overload on the Queen. There would appear to be plausible alternatives for Black, for example an exchange sacrifice with Rxd2.

[Michael Farthing]

Surely the knight on d5 would then fall also? An extra defence of the knight still falls foul of c4, which though it releases the knight pin against the king does not release its pin against the queen.