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08-14-2019 , 06:26 PM
#1
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White to get in a clear winning position in 17 moves.

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08-14-2019 , 10:20 PM
#2
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Spoiler:
I'm really curious to see how Black reacts to the h pawn marching up the file. After promoting to a Q and sitting on a8, the White K extracts himself. If allowed, the new Q can mop up pawns.
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08-15-2019 , 09:13 AM
#3
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In the 6 moves it took you to promote your pawn to a queen and move it to a8 black would have done this:



your move.
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08-15-2019 , 12:46 PM
#4
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Spoiler:
Is it 1.h4 Ka3 2.h5 Kb2 3.h6 a5 4.h7 a4 5.h8=Q a3 6.Qh5 a2 7.Qb5+ Ka1 8.Qa4 Kb2 9.Qb4+ Ka1 10.Qxc4 Kb2 11.Qxa2 Kxa2 12.c4-c5-c6 and the b/c/d pawn(s) promote?
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08-15-2019 , 04:14 PM
#5
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what if the black king instead of going to a1 goes to c1 and keeps threatening to either promote, swap your queen for a pawn or get a draw through repetition.
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08-16-2019 , 02:07 AM
#6
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Quote:
Originally Posted by xander biscuits
what if the black king instead of going to a1 goes to c1 and keeps threatening to either promote, swap your queen for a pawn or get a draw through repetition.
Spoiler:
I must be missing something, but why can't you win from there with Qa4, Qb4, Qa3, Kd1, Qc1?
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08-16-2019 , 02:20 AM
#7
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Hint 1:

Spoiler:
White king goes to c1.


Hint 2:

Spoiler:
Black tries to stalemate himself.


Hint 3:

Spoiler:
Queening the h-pawn is no good.


Full Solution (hopefully with no typos):

Spoiler:
1.Kd1 Ka3 2.Kc1 Ka2 3.h4 Ka1 4.h5 a5 5.h6 a4 6.h7 a3 7.h8=N a2 8.Ng6 fxg6 9.f7 g5 10.f8=N g4 11.Ne6 dxe6 12.d7 e5 13.d8=N e4 14.Nc6 bxc6 15.b7 c5 16.Kd1 Kb2 17.b8=Q Kxc3 18.Qe5+
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08-16-2019 , 02:24 AM
#8
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Quote:
Originally Posted by soah
Spoiler:
I must be missing something, but why can't you win from there with Qa4, Qb4, Qa3, Kd1, Qc1?
Spoiler:
a1=Q Qc1+ Ka2
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08-16-2019 , 02:36 AM
#9
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Spoiler:
1.Kd1 Ka3 (if anything else, then h4 transposes) 2.Kc1 Ka2 3.h4 Ka1 4.h5 a5 5.h6 a4 6.h7 a3 7.h8=N a2.

Now white always promotes to N then sacs, saving position from stalemate until he promotes Nc6 bc, b7 c5, Kd1 Kb2, b8=Q. Then white manoeuvres b8-a7-b7-a6 and takes c4 and wins (black goes a1-b2 with his K).
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08-16-2019 , 03:30 AM
#10
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well done to Tim and watergun with the correct solutions.

I thought it was a nice puzzle
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