White to move. Does White have a mating attack? How should White proceed?
Chess Daily News from Susan Polgar
Early afternoon brain teaser
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White to move. Does White have a mating attack? How should White proceed?
1. Nf6+ appears to mate quickly
Knight to f6 wins whatever the reply.
1. Nf6+ Kh8 (1… Kf8 2. Qe8#)
2. Qh3+ Rh5 (prolong the suffering)
3. Qxh5+ Bh6
4. Rg8#
nf6+ k moves h8 f8 quenn mates rook pinned bishope pineed easy win for wqhite
1. Nf6+ Kf8 (1. … Kh8 loses to 2. Rh3 Bh6 2. Qxh6+ etc…) 2. Nd7+ Kg8 (2. … Qxd7 Rb8+ Qc8 (Qd8 and Qe8) 3. RxQ#) or 2. … Rxd7 3. Rf3+ Rf7 4. Rb8 wins) 3. Nxe5 and soon Black will fall to Rb8.
See you in Vegas!!!
– Enrique
“Simple” mate in 4 (if black sac’s his rook on h5 to lengthen his pain). In the second move you shouldn’t use the wrong figure to check on the h-line….
Jochen
sorry susan, please help me edit my sub-line
1.Nf6+ Kf8
2.Nd7+ Kg8 (2. … Qxd7 2. Rb8+, 2. … Rxd7 3. Rf3+ Rf7 4. Rb8+)
3.Nxe5 and crushing
So simple, even I can solve it.
Nf6+ Kh8
Qh6+ Bxh6
Rg8++
I thought about it quite some time, and I think the best continuation is. 1Nf6+ Kf8 2. Nd7+ Kg8 3.Nxe5 and white is winning because of the threat Rb8+ and Qxf7+. Am I right or did I miss something better?
1. Nf6 + Kh8 2. Qh3 Bh6 3.Qxe6+ Rh7 4. Qf8 #
1. Nf6+ Kf8 2. Nd7+ Rxd7 3. Rf3+ Rf7 4. Rxf7+ Qxf7 5. Rb8+ Qe8 6. Rxe8 #
1. Nf6+ Kf8 2. Nd7+ Qxd7 3. Rb8 Qe8 4. Rxe8#
Etienne Goudriaan, Holland.
Nf6+ Kh7
Qh3+ and mate
Sorry, there was a mistake in the previous solution. Had skipped a move.
1. Nf6+ leads to mate.
A. If 1 .., Kf8 then 2. Qe8++mate.
B. If 1 .., , Kh8, then
2. Qh3+, Bh6
3. Qxh6+, Rh7
4. Rg8++ mate.
Ravi
This comment has been removed by the author.
Oops,
If I wrote:
1. Qh6 RxN
2. Rxg7 Rxg7
that just loses. So much for trying to be first.
The correct solution:
1. Nf6+ Kh8
2. Qh3 leads to mate
1. Nf6+ Kf8
2. Nd7+
then..
2. …QxN
3. Rb8+ with mate to follow
2. …RxN
3. Rf3+ Rf7
4. Rb8+ Qxb8
5. Qxf7#
2. …RxN
3. Rf3+ Bf6
4. Rxf6+ Kg7
5. Rg6+ Kh7/8
6. Qg8#
2. …RxN
3. Rf3+ Bf6
4. Rxf6+ Kg7
5. Rg6+ Kf8
6. Rg8#
Slower, but much better.
Did I miss any defenses this time? I also now realize that with moderation, I probably was not near first anyway….doh!
By the way, everyone who has:
1. Nf6+ Kf8
2. Qe8??
2. …Rxe8 and black wins easily.
ejhuerta said…
1. Nf6+ Kf8 (1. … Kh8 loses to 2. Rh3 Bh6 2. Qxh6+ etc…) 2. Nd7+ Kg8 (2. … Qxd7 Rb8+ Qc8 (Qd8 and Qe8) 3. RxQ#) or 2. … Rxd7 3. Rf3+ Rf7 4. Rb8 wins) 3. Nxe5 and soon Black will fall to Rb8.
This is correct, but there is no immediate mate if black closes the b file with Nb4. Then probably Rd2 or Re2 would be best, with mate eventually coming a few moves later. Susan’s question was if there is a mating attack. It seems the most accurate answer is black can delay that…
Argh, Kerry, you’re right- I “found” Qe8, too. Damn.
Then it is not a simple mate in 4. I’m sorry.
Having looked again I found 2 Nd7+, too.
If black not takes it but plays Kg8 3.Nxe5 seems to win. Whites threats 4. Nxf7 Qxf7 5.Rb8+ or even more simple directly 4. Rb8+ forces black to play Nb4 (what else?) but then white’s rook enters via d-line.
4. Rd2 and over.
I still can’t believe having overseen Rxe8, thanks for correcting.
Greetings
Jochen
Nf6, but I do not see a continual checking process until mate.
-DBI:
1. Nf6+ leads to mate.
If
A. 1 .., Kf8 then 2. Qe8mate.
if
B. 1 .., , Kh8, then
2. Qh3+, Bh6
ó 2.Rh3+ Bh6 (2.Rh5 Rxh5, etc) 3.RxB+ Rh7 4.Qg8mate )
3. Qxh6+, Rh7
4. Rg8++ mate.
ó
4. Qf8 mate
@ Last anonymous 4:45:
There are several mistakes in your variations….
After Kf8: 2. Qe8+? Rxe8 as said above. Did you read the comments before posting your own one?
After Kh8: 2. Rh3+ Bh6 3. Rxh6 Kg7 seems better then Rh7?
In your last variation Qf8 is not possible (Rh7, Kh1).
Jochen
Nf6+ Kf8
Nd7+ Qxd7
Rb8+ Qe8
Rxe8++
Nf6+ Kf8
Nd7+ Rxd7
Rf3+ Rf7
Rb8+ Qxb8
Qxf7++
Nf6+ Kf8
Nd7+ Kg8
Nxe5
Nf6+ Kh8
Qh3+ Bh6
Qxh6+ Rh7
Qf8++
i see a few mates but if black plays correct defense he might be able to escape with only losing some material. jochen you arrogent german piece of shit dont comment on my solutions. just play ball tag with your buddy vohaul.
I think (sadly) that moderation is required 🙁
or some sort of suspension system for posts that have to be moderated? The whole world sees when someone on here calls someone else names or retaliates or whatever. Susan is trying to promote chess not make it look bad. what is so hard about being civil?
Jochen,
The reason I knew to point out Rxe8 is because I made the same mistake, but (luckily) corrected it before posting a second incorrect “solution”. As so many of us have fallen for it, there must be weird optical (visualization) illusion because it is painfully obvious if given a moment’s thought. I suppose in our mind’s eye the queen is blocking the rook’s access to e8?
Kerry
After Nxe5, Rb8 forces Nb4. If Qxb8 Qxf7+ Kh8 Qxg7++; if Rb8 Kh7 Qg6++.
Nxe5 Nb4. Then,
1. Rd2! Threats are Rd8+ or Nxf7.
Black simply CAN’T PREVENT MATE by one of these routes. Bishop and Rook are pinned. Knights are remote. Only options are Queen and King moves.
Knight moves
1. Rd2 Nxc4
2. Rd8+ Kh7
3. Qg6++
1. Rd2 Nd5
2. Rxd5 mating
King moves
1. Rd2 Kf8 (also 2. Rd8+)
2. Nxf7 Qxf7
3. Rd8++
1. Rd2 Kh8
2. Nxf7+ Kh7 (2. ..Rg8 3. Ne5+ mates)
3. Rh3+ Bh6 (not 2…Rg8)
4. Rxh6+ Kg7
5. Rg6+ Kf8
6. Rd8+ Qxd8
7. Nxd8 mates by 8. Qf7++
1. Rd2 Kh7
2. Rh3+ Kg8
3. Rd8+ Bf8
4. Rg3+ Kh8
5. Rxf8+ Kh7
6. Qg6++
(2..Bh6 3. Rxh6 Kg7 4. Rg6+ Kh8 5. Nxf7+ Kh7 6. Ng5+ Kh8 7. Qf8++)
Queen moves
1. Rd2 Qe7 (or Qb8-d8)
2. Re8+ Qxe8 (2..Kh7 3. Qg6++)
3. Qxf7+ Kh8
4. Qxg7++
1. Rd2 Qxd5
2. Rd8+ Kh7
3. Qh3+ mating
1. Rd2 Qa7-b7
2. Rd8+ Kh7
3. Qg6++
1. Rd2 Qb6-c6/ Qa5
2. Rd8+ Kh7
3. Rh3+ Bh6
4. Qxf7++
Hello Kerry,
you’re right – that’s a very interesting psychological blockade.
Such things can (but shouldn’t!) easily happen in long calculations – who did never play a calculated variation, suddenly seeing that he or she had overseen something very simple (like an own pawn standing in a way or even saccing a figurine and although wanting to use it later on)? We call that “Schachblindheit” – I don’t know the english word.
Good if it happens here but on the board!
Best wishes
Jochen
Wolverine, why do you get insulting?
“German piece of shit”?
I do not know what kind of shit you are – and I do not want to know because it doesn’t matter to me where you are from.
Do you blame me because I am german (the only connection to Vohaul I see)? Do you blame me for correcting your post trying to help you?
I don’t know what I have done to you…. people starting insulting without reasons are not worth talking to.
So next time I will just laugh about your insults but though I ask you to try to keep it clean, please.