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| Feb-01-10 | | gofer: I think I have seen this one before... ...or something very similar... Black has given up 2 N for 2 pawns and a good position. But that is not quite true. It is a fantastic position! All black has to do now is stop the king from escaping to c2 and then b1 and if black can do that then the mate threats are huge! 17 ... Rac8!
1) 18 Nxd7 Rf5 19 Qb3 Rd4+ 20 Qd3 (19 Ne5 Rd4+ 20 Nd3 Bg5#) Bg5 21 Kd1 Rxd3+ 22 Bxd3 Rxc1+ 23 Rxc1 Qd2# 2) 18 Nd3 Bg5+ 19 Nf4 Bxg5 20 Kd3 Bb5#
3) 18 Nd4 dxe4 19 h4 (Nxd7 Bg5#) e3+ 20 Kd3 Bb5+ 21 Kd4 Rf5# 4) 18 Rf1 Bg5+ 19 Kd3 Bb5#
The Main Line
18 Qb3 Qd4+
i) 19 Ke1 Ba4 winning the queen (20 Qd3 Qf2+ 21 Kd2 Bg5+ 22 Qe3 Bxe3+ 23 Kd3 Bb5#)
ii) 19 Bd3 Bg5+ (20 Ke2/Ke1 Qf2+ 21 Kd1 Rxc1+ 22 Rxc1 Qxd2#) 20 Kd1 Ba4 21 Qxa4 Qxa4+ 22 Ke2 Bxc1 23 Raxc1/Rhxc1 Qf5 winning
iii) 19 Qd3 Qxd5 and black is in deep trouble still! 19 Nd3 Ba4 (20 Qc3 Rxc3 21 bxc3 Bg5+ 22 Ke1 Qxc3 23 Bd2 Qxd2#)
20 Qa2 Rf2! (21 b3 Qc3+ winning and 21 Re1 Bg5# and 21 Rf1 Rc2+ 22 Ke1 Rfxd2 23 Nxd2 Qxd3 24 Ng3/Rf2 Bc5 mating) 21 Ke1 Rxe2+ (Kxd2 Qg4+ mating)
22 Nxe2 Qxd3
23 b3 Rc2
24 Qxc2 Qxc2 winning as Ra1 is going to fall cheaply... Time to check! |
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| Feb-01-10 | | frogbert: <Great one! He must be quite a good player - well more than quite good. Have you got the game?> gm rune djurhuus became european junior champion in 1990, ahead of amongst others kramnik. these days he's only a 2400-rated gm, though. rune and i play for the same club (and we're also colleagues working for microsoft-acquired search company fast in oslo). we've hardly ever played on the net, and i don't record blitz games played otb - so the few wins i have against the club's gm and (over time) couple ims are lost for eternity. but who cares! :o) |
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Feb-01-10
 | | Jimfromprovidence: Just a footnote to this match...
...If white had not resigned and tried 21 Kd2, then we get the beautiful finish 21...Rd4#. 
click for larger view |
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| Feb-01-10 | | cyclon: Couple of adds; 17. -Rac8 18.Nxd7 Rf4 19.Qb3 Rd4+ 20.Qd3 Bg5+ three more moves are required in order to mate > 21.Kd1 Rxd3+ (Rxc1+?) 22.Bxd3 (Bd2 Rxd2X) -Rxc1+ 23.Rxc1 Qd2X. What slightly bothered me in the variation (while at the same time, as previously mentioned, admitting 20. -Be8 to be an excellent move); (17. -Rac8) 18.Qb3 Bg5+ 19.Kd3 Rf4 20.Nf3 R8c4, about the line 21.Bxf4 Bxf4, in which White plays 22.Qxc4 dxc4+ 23.Kxc4 (Kc3/c2 pawn-c4 stays alive in attacking purposes), Black can play King-hunt by 23. -e5 ( -Bxg3?! 24.Bd3 ) and that would be a new, unclear phase. |
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Feb-10-10
 | | LIFE Master AJ: Taking a quick break from my work ... I just now looked at this. I guessed 17...Rac8; (containing the White King, removing many of the King's flight squares) almost instantly. (I stll had many questions about the exact tactics, however.) |
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Mar-05-15
 | | tpstar: Will Stewart made a nice video on this game:
http://youtu.be/f4nYfr0ddrw
10. Nc3 avoids the Knight sacrifice on e5 = Opening Explorer |
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| Mar-12-15 | | SpiritedReposte: That's how you weave a mating net. |
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Oct-27-18
 | | al wazir: Well, I at least *considered* 17...Rac8.
But after 18. Nf3, I didn't see any way for black to make progress. And still don't. |
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| Oct-27-18 | | devere: <al wazir: Well, I at least *considered* 17...Rac8. But after 18. Nf3, I didn't see any way for black to make progress. And still don't.> After 17...Rac8 18.Nf3 Rxf3 forces checkmate. |
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| Oct-27-18 | | Walter Glattke: Won ending possible with 17.-Bg5+ 18.Kd3 Bb5+ 19.Kc2 Rac8+ 19.Kb1 Rxc1+ 20.Qxc1 Bxc1 ( threatens Bxb5 Qxb2#) 21.Rxc1 Bxe2 22.Nd7 Rf1 or 22.-Rf2 23.Rc8+ Kf7 24.Rf8+ Ke7 - 17.-Rac8 allows several answers. |
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| Oct-27-18 | | Walter Glattke: Correction: 22.Nxe2 Qxe2 all one move later, 22.Nd7 Rd8 23.Rc7 Qb7 --- 19.Kb3 Bc4+ 20..bxc4 dxc4+ 21.Ka2 Bf6 22.Ng4 seems to be better for white. |
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| Oct-27-18 | | fmouse: wew, never was that far from solving |
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| Oct-27-18 | | mel gibson: I thought 17... Q-d4 but I was wrong.
Stockfish 9 says:
17... Rac8
(17. .. Rac8 (♖a8-c8
♕d1-b3 ♗e7-g5+ ♔d2-d1 ♕f2-d4+ ♘e5-d3 ♗d7-a4 ♗c1xg5 ♗a4xb3+ ♔d1-e1 ♗b3-c2
♘d3-b4 ♗c2-g6 ♖h1-f1 ♖f8xf1+ ♘g3xf1 a7-a5 ♘b4-d3 ♗g6xd3 ♖a1-d1 ♕d4-e5
♖d1xd3 ♕e5xg5 g2-g3 ♕g5-e5 g3-g4 ♖c8-c1+ ♔e1-f2 ♖c1-c2 ♘f1-g3 ♕e5-f4+
♔f2-e1 d5-d4 ♗e2-f3 ♖c2-c1+ ♗f3-d1 e6-e5 a3-a4 ♔g8-f7 b2-b4 a5xb4 a4-a5
♕f4xg4 ♘g3-e2 ♕g4-h4+ ♔e1-d2) +8.02/31 )
score for Black +8.02 depth 31 |
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| Oct-27-18 | | yadasampati: I found 17. ... Rc8 and 18. ... Bg5+
It took me a while to understand 19. ... Rf4, because what to do after 20. Be3? It looks like 20. ... Rf3! is the refutation |
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| Oct-27-18 | | JimNorCal: In 2010 this was a Sunday puzzle? |
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| Oct-27-18 | | stacase: Got the first two moves - didn't understand the rest. |
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Oct-27-18
 | | thegoodanarchist: <stacase: Got the first two moves - didn't understand the rest.> Maybe you need a "stay"cation. |
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| Oct-27-18 | | PJs Studio: 20...Be8. Picturesque. |
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Oct-27-18
 | | Breunor: Really love the pun although its pretty obvious! Good game too! :-) |
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Oct-27-18
 | | Check It Out: This one was a bit over my pay grade. |
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Oct-27-18
 | | agb2002: Black has two pawns for two knights.
White threatens Nxd7.
Black has Qf4+ (to recover a piece), Rac8 (to cut the white king), Qd4+ (to touch e5, allow Ba4, etc.). I haven't found the time to analyze this position. I'd probably try 17... Rac8. For example, 18.Nxd7 Bg5+ 19.Kd3 Rf4 20.Bxf4 Qxf4 21.Nf1 Qc4#. |
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| Oct-27-18 | | BxChess: A possible continuation:
21. Nf5 Bg6 22. Be3 Bxf5+ 23. Kd2 Rd4+ 24. Qd3 Bxe3+ 25. Kd1 Rxd3+ 26. Nd2 Rxd2#
Its surprising how many pins leave white helpless. As <SpiritedReposte> said: That's how you weave a mating net. |
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| Oct-27-18 | | saturn2: <agb2002 18. Nxd7 Bg5+ 19. Kd3 Rf4> Maybe white avoids mate here by 20. Be3 instead of <20.Bxf4> |
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Oct-27-18
| | al wazir: <devere: After 17...Rac8 18.Nf3 Rxf3 forces checkmate.> Of course. It's obvious. Thanks. |
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May-22-22
 | | GrahamClayton: With his pieces severely restricted by Kengis's pawns on d4 and e5, Djurhuus is almost forced to sacrifice a piece for two pawns with 13...Nde5 in order to get some space and freedom to move. |
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