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Nice endgame

Nice endgame

Posers and Puzzles

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White to move and win.

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i have 1.Bh4, but i'm struggling with ...g1(N)+

6 edits
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1. Bh4 g1 (Q,B,R)
2. e3#

1. ... h1 (Q,R)
2.e4+ Kg1
3.Kg3 ... (Q,R is going nowhere good, white wins)

1. ... Kg1
2. Kg3

i suppose white's passed pawns mean underpromotions will lose for black so long as g3 is held by king. but then i'm too lazy today to think it through, and it's taken 5 edits already 😕😴

edit6: 1... Kg1, 2. Kg3 h1(B) looks drawn. perhaps i'm on the wrong line altogether. g'night.

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Quite some bishop maneuvering required here, but all fitting in a single and simple plan. The black squared bishop goes to g3, the king helps closing a box for the promoted queen at g4, and the white squared bishop creates tempi. Black's moves are pretty forced in this sequence:
1.e3 (not e4! see move 6) Kg1 2.Bh4 h1=Q 3.Bf2+ Kh2 4.Bg3+ Kg1 5.Kg4! closes the box for the black queen) Qh2 (what else?) 6.Be4! Qh1 7.Bd5 Kf1 8.Bc4+ Kg1 9.Be2! Qh2(again, what else?) 10.Bf3 Qh1 11.Be4 Kf1 12.Bd3+ Kg1 13.Bc4 Qh2 14.Bd5 Qh1 (otherwise white takes on h2 and g2 and wins with the pawn) 15.e4! (at last) Kf1 16.Bc4+ Kg1 17.e5 Qh2 18.Bd5 Qh1 19.e6 Qh2 20.Bxh2+ Kxh2 21.Bxg2 and the pawns do the job.

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ah yes, i see now.. i was starting with the wrong key. e3 creates tempo and spacial advantage. good endgame practice. 🙂

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Originally posted by David113
[fen]3B4/8/1p6/1P5P/8/3B1K2/4P1pp/5k2[/fen]

White to move and win.
1.e3/e4+ Kg1
2.Bxb6+ Kh1

But then after a forced 3..g1(?) 4.Bxg1 hxg1(Q) I'm in trouble.

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Originally posted by David113
[fen]3B4/8/1p6/1P5P/8/3B1K2/4P1pp/5k2[/fen]

White to move and win.
How about this:

1. e4+ Kg1
2. Kg3! ..

Now 2. ..h1=Q loses to 3. Bxb6#

2. ..h1=N+ (underpromoting in the hopes of gaining enough time to promote again)
3. Kf3 Kh2
4. Bxb6 (securing the promotion square with the white K's help)

Also:
3. ..Nf2
4. Bxb6 Kany
5. Bxf2

1 edit
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Oops, forgot one line:

1. e4+ Kg1
2. Kg3! Kh1!

Now I can't get the B to d4 in time... I'll look into this afterwards.

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It seems that posting the solution did not convince the other posters, but yet they all run into problems.

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Originally posted by Mephisto2
It seems that posting the solution did not convince the other posters, but yet they all run into problems.
Yes, it does work! Sorry about that, your post was the only one I skipped over since it was difficult to read (no paragraph breaks).