Brokenwall

Hohohohohoho... missing that title ??? Broken is back OK, here is as usual, weird indo sidewalks puzzle #6. White to move and win in 3 moves



Black : Kh1, Bf1
White :Ka8, Qa2, Qa6 ... etc

Good luck

Just2Good

Great Puzzle. Give me a bit of time to solve this one.

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"You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete."

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Just2Good

Here is the answer.

Spoiler for Answer:

1. Q6a4 Bg2 2. Qd1+ Bf1 3. Qxf1#

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"You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete."

~ Buckminster Fuller ~

Jaydon

What if 1.. Be2 instead?

Just2Good

I haven't worked that part out yet.

__________________
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"You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete."

~ Buckminster Fuller ~

Fenguin

i dun understand how a broken mate works... anyone help me out here?

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rawr

mrmip

A 'Broken' mate works just the same as normal, 'Unbroken' mate. A few observations on this one:

- The 'star' move is white's second move after black's best defence, putting black into zugzwang.

- It is a fortunate thing that white king stands on the a8- corner square on his otherwise empty row.

- The position itself is not achievable in a normal game of chess. Count of the promoted pieces and remaining pawns exceed 8.

Just2Good

Its just a chess position like any other (the one in posts 1 and 2 above). White has to move, and find a mate in 3 moves or less. If Black plays well enough to survive past the 3rd move, Black wins.

You are white. What's your winning line here?

__________________
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"You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete."

~ Buckminster Fuller ~

Simon

Okay here is my answer.

Nevermind, my answer doesn't work

Simon

Could Broken please tell me which pieces aren't needed, for exaMPLE THE MATE WOULD STILL occur if these pieces weren't on the board. That way I don't chase down false leads.

Brokenwall

Some pieces can't be removed individually due to the possibility of plural solution.

Ex: if Nb2 is removed, then 1.Rg2 will checkmate black easily.

Well, those pieces are the harmony of attacking and self blocking composition.
So we can only remove the attacking pieces, not self blocking pieces.

Ok here is the 1st murky hint : U should beat 1...Be2

Just2Good

Here is the answer

[spoiler] 1. Qac8 Be2 2. Qg4 Bxf3 3. Qg1 [/spoiler]

__________________
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"You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete."

~ Buckminster Fuller ~

Brokenwall

Great AO, it worked for 1...Be2, but how if 1...Bd3! then 2...Bxe4+.

Just2Good

I need a hint as now I don't think Qac8 is the winning move at all

__________________
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"You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete."

~ Buckminster Fuller ~

Brokenwall

Ok, here is the another hint, but it is still a murky one. Hint : if u were in the correct winning lines, the black's best defence is 1...Be2 then 2...Kg2