Broken Broken - Page 2 - OzChess

**Calvin** · 07-16-2009, 04:58 PM

Does this puzzle end with the knight going to g1 exposing a checkmate?

**mrmip** · 07-16-2009, 10:06 PM

For Calvin: In some lines it does. Also Ne1# might do.
For AO: Consider my observation that 'wK being on a8 square on otherwise empty rank is fortunate' as a hint.

**Just2Good** · 07-18-2009, 01:04 PM

1. Bf4 Bg2
2. Qb1+ Bf1
3. Rh2 checkmate

So clearly Black must play 1...Be2 and not Bg2. This also means its likely that Bg3 or Bf4 are the first move for white in this line. Is that correct?

**mrmip** · 07-19-2009, 07:10 PM

1...Bg2? is a bad defence against most white moves, as 2.Qb1+ is strong.
If you think 1.Bg3 or 1.Bf4 to be the key, then you really have to find something against black's plan 1...Be2 and 2...Kg2. (I'm not saying there is one)

BTW note the role of white pawns d4 and g5. Should one of them be missing, then 1.Bg3 Be2 2.Ng5+ (or Nd4+) Kg1 3.Nh3#( or Nxe2 ) would solve.

**Jaydon** · 07-19-2009, 07:34 PM

These puzzles are crazy.. Yet fun!

**Just2Good** · 07-19-2009, 07:37 PM

I need only the first move. Please tell me what is white's first move

**Calvin** · 07-19-2009, 09:23 PM

Originally Posted by mrmip

1...Bg2? is a bad defence against most white moves, as 2.Qb1+ is strong.
If you think 1.Bg3 or 1.Bf4 to be the key, then you really have to find something against black's plan 1...Be2 and 2...Kg2. (I'm not saying there is one)

BTW note the role of white pawns d4 and g5. Should one of them be missing, then 1.Bg3 Be2 2.Ng5+ (or Nd4+) Kg1 3.Nh3#( or Nxe2 ) would solve.

This problem is very hard, I keep trying but cannot solve it!

**mrmip** · 07-19-2009, 09:47 PM

Originally Posted by Arrogant-One

I need only the first move. Please tell me what is white's first move

Only for AO:
[spoiler]
1.Rb8!
[/spoiler]

Hope this helped

**Just2Good** · 07-20-2009, 09:06 PM

Originally Posted by mrmip

Only for AO:

Great tip. I am on my way to finding the solution, I just need a little more time.

**Fenguin** · 07-21-2009, 12:54 AM

I think I've got it!!

Spoiler for Answer to Puzzle:

**mrmip** · 07-21-2009, 05:33 AM

And what then, mr.Fenquin, after 2...Kg2 in yr line ??

**Calvin** · 07-21-2009, 08:40 PM

1. Nh4+ Bg2 2. Qb1+ Kxh2 3. Rxg2+ Kxh3 4. Qh1+

**Brokenwall** · 07-21-2009, 10:36 PM

Originally Posted by Calvin

1. Nh4+ Bg2 2. Qb1+ Kxh2 3. Rxg2+ Kxh3 4. Qh1+

Hmmm,

I'm sorry calvin, it's mate in 3 puzzle. Don't give up, keep trying, and notice Mr. Mip's hints.

**LMatheson** · 07-22-2009, 09:13 AM

[spoiler] 1.Rb8 Be2
2.Rh8! Kg2
3.Ne1++[/spoiler]

**Brokenwall** · 07-22-2009, 12:26 PM

Bravo...

Welldone Matheson.

Below are complete answers

1.Rb8! Be2
Rb8 threat 2.Qb1+ then 3.Qf1#. So Black must play 1.... Be2

2.Rh8! Kg2
Rh8 is a strong move to attack through H line. As Mr.Mip said, now Black is in zugzwang position. Here, next Black Bishop's move can't protect both threats from 3.Qf1# or 3.Bg1#, so it's better for Black to play 2.....Kg2

3.Ne1# (or Ng1#)
A strong move to check through Bishop Be4 while keeping f line through Rook Rf7. Black Bishop is pinned by the Rook Rd2 and 'Safety box' h3 has been kept by Rook Rh8.

Well, r u still interested in next 'broken Indo sidewalk puzzle #7' ??? Coming soon.

07-19-2009, 07:37 PM	#21 (permalink)
Just2Good Tin Cup Champ 2004 Join Date: Jul 2007 Location: Cairns Posts: 6,056 ICC Handle: Advantage FICS Handle: Advantage	I need only the first move. Please tell me what is white's first move __________________ . "You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete." ~ Buckminster Fuller ~

07-19-2009, 09:23 PM	#22 (permalink)
Calvin Senior Member Join Date: Jan 2009 Location: Melbourne Posts: 259	Originally Posted by mrmip 1...Bg2? is a bad defence against most white moves, as 2.Qb1+ is strong. If you think 1.Bg3 or 1.Bf4 to be the key, then you really have to find something against black's plan 1...Be2 and 2...Kg2. (I'm not saying there is one) BTW note the role of white pawns d4 and g5. Should one of them be missing, then 1.Bg3 Be2 2.Ng5+ (or Nd4+) Kg1 3.Nh3#( or Nxe2 ) would solve. This problem is very hard, I keep trying but cannot solve it!

07-19-2009, 09:47 PM	#23 (permalink)
mrmip Member Join Date: Mar 2009 Location: Kerava, Finland Posts: 64	Originally Posted by Arrogant-One I need only the first move. Please tell me what is white's first move Only for AO: [spoiler] 1.Rb8! [/spoiler] Hope this helped

07-20-2009, 09:06 PM	#24 (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 Only for AO: Great tip. I am on my way to finding the solution, I just need a little more time. __________________ . "You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete." ~ Buckminster Fuller ~

07-21-2009, 12:54 AM	#25 (permalink)
Fenguin BHCC/CJCC Member Join Date: Dec 2008 Location: Mt Waverley Posts: 123 ICC Handle: Fenguins	I think I've got it!! Spoiler for Answer to Puzzle: 1.Bb7 Be2 2. Nh5 if 2... BxN you have Re1# and if 2...Bd3 or c4 or f1 you have Ng3#!!! __________________ rawr

07-16-2009, 04:58 PM	#16 (permalink)
Calvin Senior Member Join Date: Jan 2009 Location: Melbourne Posts: 259	Does this puzzle end with the knight going to g1 exposing a checkmate?

07-16-2009, 10:06 PM	#17 (permalink)
mrmip Member Join Date: Mar 2009 Location: Kerava, Finland Posts: 64	For Calvin: In some lines it does. Also Ne1# might do. For AO: Consider my observation that 'wK being on a8 square on otherwise empty rank is fortunate' as a hint.

07-19-2009, 07:10 PM	#19 (permalink)
mrmip Member Join Date: Mar 2009 Location: Kerava, Finland Posts: 64	1...Bg2? is a bad defence against most white moves, as 2.Qb1+ is strong. If you think 1.Bg3 or 1.Bf4 to be the key, then you really have to find something against black's plan 1...Be2 and 2...Kg2. (I'm not saying there is one) BTW note the role of white pawns d4 and g5. Should one of them be missing, then 1.Bg3 Be2 2.Ng5+ (or Nd4+) Kg1 3.Nh3#( or Nxe2 ) would solve.

07-19-2009, 07:34 PM	#20 (permalink)
Jaydon SCTC Join Date: Aug 2008 Location: Queensland, Gold Coast Posts: 1,097 ICC Handle: Aussieboy007 FICS Handle: Bermusia	These puzzles are crazy.. Yet fun!

07-21-2009, 05:33 AM	#26 (permalink)
mrmip Member Join Date: Mar 2009 Location: Kerava, Finland Posts: 64	And what then, mr.Fenquin, after 2...Kg2 in yr line ??

07-21-2009, 08:40 PM	#27 (permalink)
Calvin Senior Member Join Date: Jan 2009 Location: Melbourne Posts: 259	1. Nh4+ Bg2 2. Qb1+ Kxh2 3. Rxg2+ Kxh3 4. Qh1+

07-21-2009, 10:36 PM	#28 (permalink)
Brokenwall Member Join Date: Feb 2009 Location: Brokenland, Indonesia Posts: 69	Originally Posted by Calvin 1. Nh4+ Bg2 2. Qb1+ Kxh2 3. Rxg2+ Kxh3 4. Qh1+ Hmmm, I'm sorry calvin, it's mate in 3 puzzle. Don't give up, keep trying, and notice Mr. Mip's hints.

07-22-2009, 09:13 AM	#29 (permalink)
LMatheson Siberian Chess Cub Join Date: Jul 2008 Posts: 318	[spoiler] 1.Rb8 Be2 2.Rh8! Kg2 3.Ne1++[/spoiler] Last edited by Just2Good : 07-22-2009 at 01:55 PM Reason: Added spoiler tags [spoiler] and [/spoiler]

07-22-2009, 12:26 PM	#30 (permalink)
Brokenwall Member Join Date: Feb 2009 Location: Brokenland, Indonesia Posts: 69	Bravo... Welldone Matheson. Below are complete answers 1.Rb8! Be2 Rb8 threat 2.Qb1+ then 3.Qf1#. So Black must play 1.... Be2 2.Rh8! Kg2 Rh8 is a strong move to attack through H line. As Mr.Mip said, now Black is in zugzwang position. Here, next Black Bishop's move can't protect both threats from 3.Qf1# or 3.Bg1#, so it's better for Black to play 2.....Kg2 3.Ne1# (or Ng1#) A strong move to check through Bishop Be4 while keeping f line through Rook Rf7. Black Bishop is pinned by the Rook Rd2 and 'Safety box' h3 has been kept by Rook Rh8. Well, r u still interested in next 'broken Indo sidewalk puzzle #7' ??? Coming soon.

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