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RE: Chess problem 37 / Schachaufgabe 37

in #chess7 years ago (edited)


Fastest solution (found by @iceblue, but congrats also to @smartlegend for mentioning the winning move 1. Rh5! first):

1. Rxh5! gxh5 (Other moves lose as well.)
2. Bh6! Nf1 (2. ... h4, which nobody suggested, extends the check mate a little bit.)
3. h4! Ng3
4. e4 Nf1
5. b5 Ng3
6. c5! dxc5
7. b6 cxb6
8. d6 c4+
9. Kd4 Ne2+
10. Ke3 Nc3
11. d7 Nd1+
12. Kd4 c3
13. d8R#

Final position:

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Wow, now that was really something for chess epicures, where strategical elements were combined with tactics and endgame play!

Yeah. Well-done guys! {3}. h4 eases a lot of stress and is sound. Good chess.

I disagree

  1. Rxh5, Nf1
  2. Rh4, Ng3
  3. Bh6, Nxf5
  1. Rxh5 Nf1
  2. Rh4 Ng3
  3. fxg6 fxg6
  4. c5 Kf7
  5. cxd6 cxd6
  6. Rc4 Re8
  7. Bf4 Nxe2
  8. Bxd6
    And white wins (even if only after 1. ... gxh5 there follows a spectacular checkmate).
  1. Rxh5 Nf1
  2. Rh4 Ng3
  3. fxg6 Nf5
  1. Rxh5 Nf1
  2. Rh4 Ng3
  3. fxg6 Nf5
  4. Rxh7 Rxh7
  5. gxh7+ Kxh7
  6. Bf4 (idea: b4-b5-b6)
    And white has a clear advantage.

Clear advantage isn't a win and it could take more than 13 moves.

It is a winning position, black will lose for sure.

The only critical move is 1. ... gxh5, because after every other move black simply has lost the knight, while his position is still bad. Therefore it is logical and most interesting to examine first what happens after 1. ... gxh5 which ends in a forced checkmate. Nobody wrote that white will always win within 13 moves.

You wrote the "Fastest solution". I can find a faster solution if I played both sides.

As all the discussion was about 1. ... gxh5 (and that rightly so), @iceblue found the fastest solution against that move. Of course white wins also against every other black move.

  1. Rxh5, Nf1
  2. Rh4, Ng3
  3. e4, gxf5
  4. Bh6, fxe4
  5. fxe4, Nf5
  6. Rg4+, Ng7
  7. Bxg7, black resigns

Or

  1. Rxh5, Nf1
  2. Rh4, Ng3
  3. e4, Nh5
  4. Rxh5!, gxh5
  5. Bh6, black resigns
  1. Rxh5 h6
  2. Rxh6 g5
  3. Rxh8 Kxh8
  4. Ke3

is it a clear win for black?

Its a loss for black. Bishop performs better than Knight in open games like this. Besides, White also has better position and material advantage.

Right, especially as the knight is trapped anyway in his variation ... :)

I don't think anyone likes to lose a rook take a knight.

I even like to lose the queen if that is the only way to checkmate my opponent.

I still disagree

  1. Rxh5 gxh5
  2. Bh6 Nf1
  3. h4 Ng3
  4. e4 Nxf5
  5. e4xNf5
    White is risking a stalemate.

Ok, let's play a game from the start position until the end. I have white, you black. The winner gets 1000 Steem from the loser. That should make things clear. :-)

I found an even better move.
1.Rxh5 gxh5
2.Bh6 h4!

Now I can move my Knight. f1 g3 h5 g7 ...

Check my solution above: I wrote myself that 2. ... h4 extends the number of moves until chekmate, but it doesn't help in the end ...

I wish I had 1000 Steem. And I'm no grandmaster.

I allow you the help of any chess software you wish. :)

No fun using software. Found another move though.

  1. Rxh5 h6!

My friend, "Mr. disagree", the problem is solved, finished, "Ende Gelände". Try again next time and good luck! :-)
No black move helps here ... we cannot analyse every single possible black move ... if you decide for one variation I can show you how to refute it, but I have not the time to examine one hopeless move after the other. :)

If you cannot analyse every single black move then you cannot claim that a precise move is a sure victory.

I did analyze it, but I don't have the time to discuss every single useless move with you now. The challenge stands in case you think you reach at least a draw as black. We can reduce the stake to 100 Steem if you prefer it.

It' that after e4xNf4 I'm forced to move a pawn so I studing if there' someway to get a stalemate.