नास्तिक (heterodox)

My name is Ramesh and this is my personal blog.

Olympiad round 5 tactics

with 6 comments

White to play and win.

game2_14

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Written by Ramesh

November 17, 2008 at 7:49 pm

Posted in Chess Combinations

Tagged with , ,

6 Responses

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  1. Hmmm… I guess Rd2 for white should do the trick. Black may follow it up with …Qh1+ but very soon it will run out of checks, following which the black Queen won’t be able to protect the black knight for too long!

    Vishal Lama

    November 19, 2008 at 6:49 am

  2. Unfortunately Rd2 does not work. 1 Qh1+ Kf2 2. Qg2+ followed by mate on e2 or g1 with Q.

    Ramesh

    November 20, 2008 at 7:31 pm

  3. I guess I am missing something here. After 1…Rd2 2.Qh1+ Kf2 3.Qg2+ Ke3, I can’t see how black can save its knight. Black can’t mate with …Qe2 because of the presence of white rook, and …Qg1+ by black leads to Kxf4 by white.

    Vishal Lama

    November 20, 2008 at 10:15 pm

  4. I was sloppy. Sorry. I saw Ke1 and saw that Qg1 was a mate and you are right Ke3 wins for white. The following is the correct refutation of Rd2.

    1. Rd2 Qh1+ 2. Kf2 Nh3+
    (2… Qg2+ 3. Ke1 (3. Ke3 white wins) 3… Qg1#)
    3. Kg3
    (3. Ke2 Ng5 is ok for black)
    3… Ng5 is also ok for black

    Ramesh

    November 20, 2008 at 10:34 pm

  5. Hmmm… Rd2 for white isn’t good at all. I see a more immediate forcing sequence (which I should have noted earlier) starting with 1.Nf6+… If 1…Rxf6, then there are all sorts of back-rank threats, e.g. 2.Rd8+… Other defensive moves by black also seem like losing ones.

    Vishal Lama

    November 20, 2008 at 10:56 pm

  6. Yes! There is a forced mate.

    1. Nxf6+ Kg7
    (1… Rxf6 2. Rd8+ Kf7 3. Qd7+ Kg6 4. Rg8+ Kh5 5. Qg4#
    And this is what happened in the actual game!)
    (1… Kh8 2. Qh7#)
    (1… Kf7 2. Rd7#)
    2. Rd7+ Rf7 3. Qh7+ Kxf6 4. Rxf7+ Ke5 5. Qf5+ Kd6 6. Qd7+ Ke5 7. Rf5#

    Ramesh

    November 20, 2008 at 11:24 pm


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