More Sidewalk Puzzles - OzChess

**mrmip** · 04-02-2009, 03:08 AM

This is the first 'Indonesian sidewalk'-puzzle I encountered. And like first love it retains a special place in my memories. Note the similarity of the position with 'Broken mate #1'. Whether the solution is similar or not, I leave to you to decide.

White to play and mate in 3 moves:

**Just2Good** · 04-02-2009, 12:38 PM

Originally Posted by mrmip

This is the first 'Indonesian sidewalk'-puzzle I encountered. And like first love it retains a special place in my memories. Note the similarity of the position with 'Broken mate #1'. Whether the solution is similar or not, I leave to you to decide.

White to play and mate in 3 moves:

Excellent! I was so discouraged after failing to find the answer to the last mate in 3 puzzle. Ironically I had set up the correct mating pattern, however I used the wrong bishop to reinforce the a2 bishop. The bishop I used cut off the Rc8's influence allowing the king to escape to c2

Hopefully I will fare better in this puzzle.

**Brokenwall** · 04-02-2009, 02:44 PM

Hint: horizontal/vertical/diagonal.

**mrmip** · 04-02-2009, 07:06 PM

Originally Posted by Brokenwall

Hint: horizontal/vertical/diagonal.

A really murky hint, if there ever was one!
Even confused me - and I know the solution...

**Brokenwall** · 04-02-2009, 08:47 PM

Murky hint? Not really.
One of those patterns will be used in 3rd move.

**Just2Good** · 04-03-2009, 12:36 PM

Originally Posted by mrmip

This is the first 'Indonesian sidewalk'-puzzle I encountered. And like first love it retains a special place in my memories. Note the similarity of the position with 'Broken mate #1'. Whether the solution is similar or not, I leave to you to decide.

White to play and mate in 3 moves:

I have put this game up in the viewer so people can move the pieces around to try and solve the mystery!

**Just2Good** · 04-03-2009, 12:39 PM

Not a difficult puzzle at all. Here is my first attempt:

1. Ne3 Rd2 2. Ngf5 Rh2 3. Qe1#

**Simon** · 04-03-2009, 04:30 PM

Originally Posted by Arrogant-One

Not a difficult puzzle at all. Here is my first attempt:

1. Ne3 Rd2 2. Ngf5 Rh2 3. Qe1#

I think there is more to this puzzle than that AO.

**mrmip** · 04-03-2009, 07:12 PM

Originally Posted by Arrogant-One

Not a difficult puzzle at all. Here is my first attempt:

1. Ne3 Rd2 2. Ngf5 Rh2 3. Qe1#

Nice try AO, but what if instead of 2...Rh2 black produces 2...Re2/Rf2/Rc2/Rxb2? Then mates Qg2? and Rh7? are still prevented.

**Just2Good** · 04-03-2009, 09:27 PM

Originally Posted by mrmip

Nice try AO, but what if instead of 2...Rh2 black produces 2...Re2/Rf2/Rc2/Rxb2? Then mates Qg2? and Rh7? are still prevented.

Okay, well what about this variation?

1. Nf5 Rh8 (if 1...Rd7 then 2. Re5! creating a double mate threat)
2. Re7 Rh2
3. Re1+

**mrmip** · 04-03-2009, 11:21 PM

Hmmm... Something to think about AO:
1.Nf5 Rd7
2.Re5 Re7!
3.???

Rook on e7 can be taken 4 ways, but no mate...

**Just2Good** · 04-03-2009, 11:40 PM

Originally Posted by mrmip

Hmmm... Something to think about AO:
1.Nf5 Rd7
2.Re5 Re7!
3.???

Rook on e7 can be taken 4 ways, but no mate...

That little rook is turning into a brilliant defender. Okay, I request the first hint. I will crack this problem!

**Brokenwall** · 04-04-2009, 02:11 AM

Please notice my previous hint, Alex. Bcoz black rook covers both of HORIZONTAL n VERTICAL line, so u must try to make this rook only covers 1 side. So u can easily checkmate black king through uncovered side. In other variants, of course DIAGONAL attacking is needed to checkmate black king.

**Simon** · 04-04-2009, 05:31 PM

Originally Posted by Brokenwall

Hint: horizontal/vertical/diagonal.

1.Rc8 Rxc8 2.Bd4 Rf8 3.Qg1

Even if black won't play Rxc8, the first and second move are the same. After 2.Bd4 there is a double mating threat.

It was a good hint by the way, probably too helpful though

**mrmip** · 04-04-2009, 06:45 PM

Very sharp Simon - but not quite correct.
1.Rc8 Rf8
2.Bd4 Rf2!
3.??? All three mates (Rh8/Qg1/Qh3) are covered by the nimble rook.

Back to interpreting the hints....

04-02-2009, 03:08 AM	#1 (permalink)
mrmip Member Join Date: Mar 2009 Location: Kerava, Finland Posts: 64	More Sidewalk Puzzles This is the first 'Indonesian sidewalk'-puzzle I encountered. And like first love it retains a special place in my memories. Note the similarity of the position with 'Broken mate #1'. Whether the solution is similar or not, I leave to you to decide. White to play and mate in 3 moves:

04-02-2009, 12:38 PM	#2 (permalink)
Just2Good Tin Cup Champ 2004 Join Date: Jul 2007 Location: Cairns Posts: 6,056 ICC Handle: Advantage FICS Handle: Advantage	Originally Posted by mrmip This is the first 'Indonesian sidewalk'-puzzle I encountered. And like first love it retains a special place in my memories. Note the similarity of the position with 'Broken mate #1'. Whether the solution is similar or not, I leave to you to decide. White to play and mate in 3 moves: Excellent! I was so discouraged after failing to find the answer to the last mate in 3 puzzle. Ironically I had set up the correct mating pattern, however I used the wrong bishop to reinforce the a2 bishop. The bishop I used cut off the Rc8's influence allowing the king to escape to c2 Hopefully I will fare better in this puzzle. __________________ . "You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete." ~ Buckminster Fuller ~

04-02-2009, 07:06 PM	#4 (permalink)
mrmip Member Join Date: Mar 2009 Location: Kerava, Finland Posts: 64	Originally Posted by Brokenwall Hint: horizontal/vertical/diagonal. A really murky hint, if there ever was one! Even confused me - and I know the solution...

04-03-2009, 12:39 PM	#7 (permalink)
Just2Good Tin Cup Champ 2004 Join Date: Jul 2007 Location: Cairns Posts: 6,056 ICC Handle: Advantage FICS Handle: Advantage	Not a difficult puzzle at all. Here is my first attempt: 1. Ne3 Rd2 2. Ngf5 Rh2 3. Qe1# __________________ . "You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete." ~ Buckminster Fuller ~

04-03-2009, 04:30 PM	#8 (permalink)
Simon Senior Member Join Date: Nov 2008 Posts: 162	Originally Posted by Arrogant-One Not a difficult puzzle at all. Here is my first attempt: 1. Ne3 Rd2 2. Ngf5 Rh2 3. Qe1# I think there is more to this puzzle than that AO.

04-02-2009, 02:44 PM	#3 (permalink)
Brokenwall Member Join Date: Feb 2009 Location: Brokenland, Indonesia Posts: 69	Hint: horizontal/vertical/diagonal.

04-02-2009, 08:47 PM	#5 (permalink)
Brokenwall Member Join Date: Feb 2009 Location: Brokenland, Indonesia Posts: 69	Murky hint? Not really. One of those patterns will be used in 3rd move.

04-03-2009, 07:12 PM	#9 (permalink)
mrmip Member Join Date: Mar 2009 Location: Kerava, Finland Posts: 64	Originally Posted by Arrogant-One Not a difficult puzzle at all. Here is my first attempt: 1. Ne3 Rd2 2. Ngf5 Rh2 3. Qe1# Nice try AO, but what if instead of 2...Rh2 black produces 2...Re2/Rf2/Rc2/Rxb2? Then mates Qg2? and Rh7? are still prevented.

04-03-2009, 09:27 PM	#10 (permalink)
Just2Good Tin Cup Champ 2004 Join Date: Jul 2007 Location: Cairns Posts: 6,056 ICC Handle: Advantage FICS Handle: Advantage	Originally Posted by mrmip Nice try AO, but what if instead of 2...Rh2 black produces 2...Re2/Rf2/Rc2/Rxb2? Then mates Qg2? and Rh7? are still prevented. Okay, well what about this variation? 1. Nf5 Rh8 (if 1...Rd7 then 2. Re5! creating a double mate threat) 2. Re7 Rh2 3. Re1+ __________________ . "You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete." ~ Buckminster Fuller ~

04-03-2009, 11:21 PM	#11 (permalink)
mrmip Member Join Date: Mar 2009 Location: Kerava, Finland Posts: 64	Hmmm... Something to think about AO: 1.Nf5 Rd7 2.Re5 Re7! 3.??? Rook on e7 can be taken 4 ways, but no mate...

04-03-2009, 11:40 PM	#12 (permalink)
Just2Good Tin Cup Champ 2004 Join Date: Jul 2007 Location: Cairns Posts: 6,056 ICC Handle: Advantage FICS Handle: Advantage	Originally Posted by mrmip Hmmm... Something to think about AO: 1.Nf5 Rd7 2.Re5 Re7! 3.??? Rook on e7 can be taken 4 ways, but no mate... That little rook is turning into a brilliant defender. Okay, I request the first hint. I will crack this problem! __________________ . "You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete." ~ Buckminster Fuller ~

04-04-2009, 02:11 AM	#13 (permalink)
Brokenwall Member Join Date: Feb 2009 Location: Brokenland, Indonesia Posts: 69	Please notice my previous hint, Alex. Bcoz black rook covers both of HORIZONTAL n VERTICAL line, so u must try to make this rook only covers 1 side. So u can easily checkmate black king through uncovered side. In other variants, of course DIAGONAL attacking is needed to checkmate black king.

04-04-2009, 05:31 PM	#14 (permalink)
Simon Senior Member Join Date: Nov 2008 Posts: 162	Originally Posted by Brokenwall Hint: horizontal/vertical/diagonal. 1.Rc8 Rxc8 2.Bd4 Rf8 3.Qg1 Even if black won't play Rxc8, the first and second move are the same. After 2.Bd4 there is a double mating threat. It was a good hint by the way, probably too helpful though

04-04-2009, 06:45 PM	#15 (permalink)
mrmip Member Join Date: Mar 2009 Location: Kerava, Finland Posts: 64	Very sharp Simon - but not quite correct. 1.Rc8 Rf8 2.Bd4 Rf2! 3.??? All three mates (Rh8/Qg1/Qh3) are covered by the nimble rook. Back to interpreting the hints....

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