Donate to Remove ads

Got a credit card? use our Credit Card & Finance Calculators

Thanks to Bhoddhisatva,scotia,Anonymous,Cornytiv34,Anonymous, for Donating to support the site

Chess

cinelli
Lemon Slice
Posts: 550
Joined: November 9th, 2016, 11:33 am
Has thanked: 231 times
Been thanked: 160 times

Chess

#508906

Postby cinelli » June 22nd, 2022, 9:00 pm

Image

In this chess puzzle black’s king is surrounded and black’s only moves are b6 and g5. Can you find white’s sequence to mate in four moves?

Cinelli

GrahamPlatt
Lemon Quarter
Posts: 2053
Joined: November 4th, 2016, 9:40 am
Has thanked: 1030 times
Been thanked: 821 times

Re: Chess

#508908

Postby GrahamPlatt » June 22nd, 2022, 9:18 pm

There seems to be a mate in one - nd3. So if you want to prolong the agony, just keep moving the king back and let that b pawn advance…
Oops, edit: playing in the wrong direction! Plainly nd3 and kxb. Sorry.

Nd3… kxb
Nd3-f2 ..pb6,
(If kg3, qg1 mate)
qh1 kg3
qh2 mate

GrahamPlatt
Lemon Quarter
Posts: 2053
Joined: November 4th, 2016, 9:40 am
Has thanked: 1030 times
Been thanked: 821 times

Re: Chess

#508913

Postby GrahamPlatt » June 22nd, 2022, 9:50 pm

No. That does NOT work. N-f2 & pxn… damn. Oh, just ignore me!

GrahamPlatt
Lemon Quarter
Posts: 2053
Joined: November 4th, 2016, 9:40 am
Has thanked: 1030 times
Been thanked: 821 times

Re: Chess

#508915

Postby GrahamPlatt » June 22nd, 2022, 9:54 pm

OK

Rc7 .. then a black pawn moves
Rc1 .. the other pawn moves.
Nd3.. kxb
Qg1 mate.

9873210
Lemon Slice
Posts: 974
Joined: December 9th, 2016, 6:44 am
Has thanked: 224 times
Been thanked: 293 times

Re: Chess

#509051

Postby 9873210 » June 23rd, 2022, 2:23 pm

GrahamPlatt wrote:OK

Rc7 .. then a black pawn moves
Rc1 .. the other pawn moves.
Nd3.. kxb
Qg1 mate.

... Kh3

mc2fool
Lemon Half
Posts: 7774
Joined: November 4th, 2016, 11:24 am
Has thanked: 7 times
Been thanked: 2996 times

Re: Chess

#509060

Postby mc2fool » June 23rd, 2022, 3:12 pm


GrahamPlatt
Lemon Quarter
Posts: 2053
Joined: November 4th, 2016, 9:40 am
Has thanked: 1030 times
Been thanked: 821 times

Re: Chess

#509077

Postby GrahamPlatt » June 23rd, 2022, 5:08 pm

9873210 wrote:
GrahamPlatt wrote:OK

Rc7 .. then a black pawn moves
Rc1 .. the other pawn moves.
Nd3.. kxb
Qg1 mate.

... Kh3


Bugger. I did say ignore me!

UncleEbenezer
The full Lemon
Posts: 10658
Joined: November 4th, 2016, 8:17 pm
Has thanked: 1451 times
Been thanked: 2956 times

Re: Chess

#509083

Postby UncleEbenezer » June 23rd, 2022, 5:49 pm

GrahamPlatt wrote:
Bugger. I did say ignore me!


Did someone say something?

Couple of things to bear in mind with these problems:
  1. It ain't chess as in a game, it's chess as in a diabolical problem space.
  2. there's a gotcha (preferably several) with any obvious solution or promising line.

CryptoPlankton
Lemon Slice
Posts: 786
Joined: November 4th, 2016, 12:12 pm
Has thanked: 1543 times
Been thanked: 873 times

Re: Chess

#509097

Postby CryptoPlankton » June 23rd, 2022, 7:23 pm

From past experience of these, this doesn't feel right (doesn't use the rook) - so please point out why!

Spoiler:

1. Kb6 g5
2. Nd3 Kxg2
3. N(d3)f2 Kg3
4. Qg1#

9873210
Lemon Slice
Posts: 974
Joined: December 9th, 2016, 6:44 am
Has thanked: 224 times
Been thanked: 293 times

Re: Chess

#509101

Postby 9873210 » June 23rd, 2022, 8:04 pm

CryptoPlankton wrote:From past experience of these, this doesn't feel right (doesn't use the rook) - so please point out why!

Spoiler:

1. Kb6 g5
2. Nd3 Kxg2
3. N(d3)f2 Kg3
4. Qg1#



3 ... P(e3)xN(f2)


now what?

perhaps:

If this were chess there is a mate in 6 with the queen taking all the e,f, and g pawns ending on e3 mate.
1. Qa1 g5 (or b6)
2. Qxe5 b6
3. Ka6 b5
4. Qxg5 b4
5. Qxf4 b3
6. Qxe3 mate

Which suggests:
1. Qd8 g5 (or b6)
2. Rd7 b6
3. Rd2 p(e3)xR(d2)
4. Qd4 mate

CryptoPlankton
Lemon Slice
Posts: 786
Joined: November 4th, 2016, 12:12 pm
Has thanked: 1543 times
Been thanked: 873 times

Re: Chess

#509106

Postby CryptoPlankton » June 23rd, 2022, 8:27 pm

9873210 wrote:
CryptoPlankton wrote:From past experience of these, this doesn't feel right (doesn't use the rook) - so please point out why!

Spoiler:

1. Kb6 g5
2. Nd3 Kxg2
3. N(d3)f2 Kg3
4. Qg1#



3 ... P(e3)xN(f2)


now what?

perhaps:

If this were chess there is a mate in 6 with the queen taking all the e,f, and g pawns ending on e3 mate.
1. Qa1 g5 (or b6)
2. Qxe5 b6
3. Ka6 b5
4. Qxg5 b4
5. Qxf4 b3
6. Qxe3 mate

Which suggests:
1. Qd8 g5 (or b6)
2. Rd7 b6
3. Rd2 p(e3)xR(d2)
4. Qd4 mate

Thank you! Not sure what all the "mate in six" preamble was about, but I like the solution.

I'll blame COVID (fifth day) this time!

CP

9873210
Lemon Slice
Posts: 974
Joined: December 9th, 2016, 6:44 am
Has thanked: 224 times
Been thanked: 293 times

Re: Chess

#509110

Postby 9873210 » June 23rd, 2022, 8:39 pm

CryptoPlankton wrote:
9873210 wrote:
CryptoPlankton wrote:From past experience of these, this doesn't feel right (doesn't use the rook) - so please point out why!

Spoiler:

1. Kb6 g5
2. Nd3 Kxg2
3. N(d3)f2 Kg3
4. Qg1#



3 ... P(e3)xN(f2)


now what?

perhaps:

If this were chess there is a mate in 6 with the queen taking all the e,f, and g pawns ending on e3 mate.
1. Qa1 g5 (or b6)
2. Qxe5 b6
3. Ka6 b5
4. Qxg5 b4
5. Qxf4 b3
6. Qxe3 mate

Which suggests:
1. Qd8 g5 (or b6)
2. Rd7 b6
3. Rd2 p(e3)xR(d2)
4. Qd4 mate

Thank you! Not sure what all the "mate in six" preamble was about, but I like the solution.

I'll blame COVID (fifth day) this time!

CP


It's how I would play this position in a real game, particularly if I had time trouble. When I wrote that I did not have the answer. The mate in 6 showed me how to use the queen and I stumbled into the mate in 4. Some people may be interested in the thought process rather than just the answer.

mc2fool
Lemon Half
Posts: 7774
Joined: November 4th, 2016, 11:24 am
Has thanked: 7 times
Been thanked: 2996 times

Re: Chess

#509112

Postby mc2fool » June 23rd, 2022, 8:50 pm

9873210 wrote:
Which suggests:
1. Qd8 g5 (or b6)
2. Rd7 b6
3. Rd2 p(e3)xR(d2)
4. Qd4 mate

Close, but 4. Qd4 e5xQ ! :D

9873210
Lemon Slice
Posts: 974
Joined: December 9th, 2016, 6:44 am
Has thanked: 224 times
Been thanked: 293 times

Re: Chess

#509113

Postby 9873210 » June 23rd, 2022, 9:05 pm

mc2fool wrote:
9873210 wrote:
Which suggests:
1. Qd8 g5 (or b6)
2. Rd7 b6
3. Rd2 p(e3)xR(d2)
4. Qd4 mate

Close, but 4. Qd4 e5xQ ! :D

Rats, 4. Qxb6 mate mate in 6 was so much easier.

GoSeigen
Lemon Quarter
Posts: 4336
Joined: November 8th, 2016, 11:14 pm
Has thanked: 1583 times
Been thanked: 1561 times

Re: Chess

#509123

Postby GoSeigen » June 23rd, 2022, 10:38 pm

Simplistic, but does this work?

Spoiler:

1. Rc7 ...
2. Rc1 ...
3. Nd3+ KxB
4. Qg1 mate


GS

mc2fool
Lemon Half
Posts: 7774
Joined: November 4th, 2016, 11:24 am
Has thanked: 7 times
Been thanked: 2996 times

Re: Chess

#509129

Postby mc2fool » June 23rd, 2022, 11:05 pm

GoSeigen wrote:Simplistic, but does this work?

Spoiler:

1. Rc7 ...
2. Rc1 ...
3. Nd3+ KxB
4. Qg1 mate


GS

Nope. 4. Qg1 Kxh3 :D

GoSeigen
Lemon Quarter
Posts: 4336
Joined: November 8th, 2016, 11:14 pm
Has thanked: 1583 times
Been thanked: 1561 times

Re: Chess

#509137

Postby GoSeigen » June 24th, 2022, 6:26 am

mc2fool wrote:
GoSeigen wrote:Simplistic, but does this work?

Spoiler:

1. Rc7 ...
2. Rc1 ...
3. Nd3+ KxB
4. Qg1 mate


GS

Nope. 4. Qg1 Kxh3 :D


Aargh. Cunning puzzle.

GS

cinelli
Lemon Slice
Posts: 550
Joined: November 9th, 2016, 11:33 am
Has thanked: 231 times
Been thanked: 160 times

Re: Chess

#509378

Postby cinelli » June 24th, 2022, 8:29 pm

The solution:

The prize goes to 9873210 for the correct solution:

1 Qd8! b6 or g5
2 Rd7! g5 or b6
3 Rd2! exd2
4 Qxb6 mate

I think the rook sacrifice is brilliant as it not only gives black a move, it also frees the diagonal from b3 to the king. This is a problem by Fritz Giegold.


Cinelli

cinelli
Lemon Slice
Posts: 550
Joined: November 9th, 2016, 11:33 am
Has thanked: 231 times
Been thanked: 160 times

Re: Chess

#526681

Postby cinelli » August 31st, 2022, 7:53 pm

Chess enthusiasts might be interested in the recent Radio 4 programme Reunion which brought together participants in the 1997 chess match between supercomputer Deep Blue and world champion Garry Kasparov.

https://www.bbc.co.uk/sounds/play/m001bkvt

Cinelli

swill453
Lemon Half
Posts: 7943
Joined: November 4th, 2016, 6:11 pm
Has thanked: 982 times
Been thanked: 3625 times

Re: Chess

#532798

Postby swill453 » September 27th, 2022, 5:43 pm

Snorvey wrote:How do you cheat in a face to face game? There have been suggestions (by Eon Musk!) of some sort of signalling device up his bum, with a mate elsewhere on a computer anal(!)ysing the game and sending him which moves to play. Neimann has offered to play naked and was actually scanned by security before taking his seat.

Sounds like something out of the pawn industry.

Scott.


Return to “Games, Puzzles and Riddles”

Who is online

Users browsing this forum: No registered users and 1 guest