Holidays study

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Kornrade
Posts: 11
Joined: Fri Jun 15, 2012 11:18 am

Holidays study

Post by Kornrade »

[fen]4n3/2p1b1p1/1pPpkp2/4p1P1/3PPP2/Np2K3/bP6/8 w - - 0 1[/fen]
White to move and win
Probleemblad 4/2022 E531
"An easy win after locking up the black pieces? Think again."


Have fun and happy holidays!
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peter
Posts: 3580
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Holidays study

Post by peter »

Kornrade wrote: ↑Thu Dec 22, 2022 12:41 pm [fen]4n3/2p1b1p1/1pPpkp2/4p1P1/3PPP2/Np2K3/bP6/8 w - - 0 1[/fen]
White to move and win
Probleemblad 4/2022 E531
"An easy win after locking up the black pieces? Think again."


Have fun and happy holidays!
Hi Mihai!

Great to see you at work again!

Wish a very merry X-Mas to you and your beloved ones!
Peter.
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Hobacle
Posts: 244
Joined: Thu Mar 04, 2021 3:57 pm
Full name: Nott Q Suree

Re: Holidays study

Post by Hobacle »

King to c1, knight to d2, king to c3, knight to b3 then back to d2, and finally king to a3 wins. Is that right?
The main line is provided by SF10 in my mobile phone.
[pgn]
[Date "2022.12.22"]
[Result "1-0"]
[FEN "4n3/2p1b1p1/1pPpkp2/4p1P1/3PPP2/Np2K3/bP6/8 w - - 0 1"]
[SetUp "1"]

{[59] m33:} 1. f5+ Kf7 2. g6+ Kf8 3. d5 Bd8 (3... b5 4. Nxb5 Bb1 5. Na3 Bc2 6.
Nxc2) 4. Kd2 Ke7 5. Kc1 Kf8 6. Nb1 (6. Nc4) 6... Be7 7. Nd2 Bd8 8. Kd1 b5 9.
Ke2 Be7 10. Kd3 Bd8 11. Kc3 Kg8 12. Kb4 (12. Nxb3 $2 12... b4+) 12... Kf8 13. Kxb5 Be7 14. Kc4 Bd8 15. Kc3 Kg8 16. Nxb3 Kh8 17. Nd2 Bxd5 18. exd5 e4 19.
Nxe4 Be7 20. Kb4 Bd8 21. Kb5 Kg8 22. Ka6 Kh8 23. Kb7 Be7 24. Kc8 Kg8 25. Kd7
Kf8 26. b4 Bd8 27. Kxd8 Kg8 28. Kxe8 Kh8 29. b5 Kg8 30. Ke7 Kh8 31. b6 cxb6 32.
c7 Kg8 33. c8=Q# 1-0

[/pgn]
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User avatar
Ajedrecista
Posts: 2236
Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

Re: Holidays study.

Post by Ajedrecista »

Hello:
Hobacle wrote: ↑Thu Dec 22, 2022 5:20 pm King to c1, knight to d2, king to c3, knight to b3 then back to d2, and finally king to a3 wins. Is that right?
The main line is provided by SF10 in my mobile phone.
[pgn]
[Date "2022.12.22"]
[Result "1-0"]
[FEN "4n3/2p1b1p1/1pPpkp2/4p1P1/3PPP2/Np2K3/bP6/8 w - - 0 1"]
[SetUp "1"]

{[59] m33:} 1. f5+ Kf7 2. g6+ Kf8 3. d5 Bd8 (3... b5 4. Nxb5 Bb1 5. Na3 Bc2 6.
Nxc2) 4. Kd2 Ke7 5. Kc1 Kf8 6. Nb1 (6. Nc4) 6... Be7 7. Nd2 Bd8 8. Kd1 b5 9.
Ke2 Be7 10. Kd3 Bd8 11. Kc3 Kg8 12. Kb4 (12. Nxb3 $2 12... b4+) 12... Kf8 13. Kxb5 Be7 14. Kc4 Bd8 15. Kc3 Kg8 16. Nxb3 Kh8 17. Nd2 Bxd5 18. exd5 e4 19.
Nxe4 Be7 20. Kb4 Bd8 21. Kb5 Kg8 22. Ka6 Kh8 23. Kb7 Be7 24. Kc8 Kg8 25. Kd7
Kf8 26. b4 Bd8 27. Kxd8 Kg8 28. Kxe8 Kh8 29. b5 Kg8 30. Ke7 Kh8 31. b6 cxb6 32.
c7 Kg8 33. c8=Q# 1-0

[/pgn]
The solution and the DTM looks fine to me. The problem might be published at Probleemblad Dutch magazine number 4 of 2022 (release date: 1st December, 2022) according to the OP:

http://www.probleemblad.nl/
Probleemblad wrote:Laatst verschenen:
Nummer 4
1 december 2022
It should be problem E531 according with the OP again. I did not succeed searching for the author of the problem, neither searching FEN nor the solution, not even with the GBR code (+0064.67e3e6).

E stands for 'eindspelstudies' (endgame studies) according to the free proof number:

http://www.probleemblad.nl/images/Docum ... 2013-4.pdf

So the solution of problem E531 might be published in a future issue.

Regards from Spain.

Ajedrecista.
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Kornrade
Posts: 11
Joined: Fri Jun 15, 2012 11:18 am

Re: Holidays study.

Post by Kornrade »

Ajedrecista wrote: ↑Thu Dec 22, 2022 9:09 pm

The problem might be published at Probleemblad Dutch magazine number 4 of 2022 (release date: 1st December, 2022) according to the OP
Scanned page from Probleemblad:
https://ibb.co/Q6CBLys

The only thing to add to the posted solution:
- it would be a (quite nice) draw if all pieces on the a and b columns disappeared
- even if the knight gets taken by the bishop and the b6 pawn stays protected, there is still the white b pawn to create the zugzwang

All the best!
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chessica
Posts: 1067
Joined: Thu Aug 11, 2022 11:30 pm
Full name: Esmeralda Pinto

Re: Holidays study

Post by chessica »

[fen]3bnk2/2p3p1/1pPp1pP1/3PpP2/4P3/Np6/bP6/2K5 w - - 5 6[/fen]



The Huntsman 1 ssse3:
classical evaluation enabled

Code: Select all

 1/1	00:00	 8	8k	+M28	Sa3-b1
 2/2	00:00	 19	19k	+M28	Sa3-b1 Ld8-e7
 3/3	00:00	 32	32k	+M28	Sa3-b1 Ld8-e7 Sb1-d2
 4/4	00:00	 49	49k	+M28	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8
 5/5	00:00	 69	69k	+M28	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1
 6/6	00:00	 93	93k	+M28	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1 Ld8-e7
 7/7	00:00	 120	60k	+M28	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1 Ld8-e7 Kd1-e2
 8/8	00:00	 153	77k	+M29	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1 Ld8-e7 Kd1-e2 La2-b1
 9/9	00:00	 185	93k	+M29	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1 Ld8-e7 Kd1-e2 La2-b1 Sd2xb1
 10/10	00:00	 222	111k	+M29	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1 Ld8-e7 Kd1-e2 La2-b1 Sd2xb1 b6-b5
 11/11	00:00	 258	129k	+M29	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1 Ld8-e7 Kd1-e2 La2-b1 Sd2xb1 b6-b5 Ke2-d3
 12/12	00:00	 296	148k	+M29	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1 Ld8-e7 Kd1-e2 La2-b1 Sd2xb1 b6-b5 Ke2-d3 Kf8-g8
 13/13	00:00	 340	170k	+M29	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1 Ld8-e7 Kd1-e2 La2-b1 Sd2xb1 b6-b5 Ke2-d3 Kf8-g8 Kd3-c3
 ...
 111/56	00:25	 24.164k	962k	+M28	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1 Ld8-e7 Kd1-e2 b6-b5 Ke2-d3 Kf8-g8 Kd3-c3 Le7-f8 Kc3-b4 Kg8-h8 Kb4xb5 Kh8-g8 Kb5-b4 Lf8-e7 Kb4-c3 Kg8-f8 Sd2xb3 La2-b1 Sb3-d2 Lb1-c2 Kc3xc2 Le7-d8 Kc2-b3 Kf8-g8 Kb3-b4 Kg8-h8 Kb4-b5 Ld8-e7 Kb5-a6 Le7-d8 Ka6-b7 Ld8-e7 Kb7-c8 Kh8-g8 Kc8-d7 Kg8-f8 Sd2-b3 Kf8-g8 Kd7xe7 Kg8-h8 Ke7xe8 Kh8-g8 Sb3-c5 d6xc5 d5-d6 c7xd6 c6-c7 Kg8-h8 c7-c8D Kh8-g8 Ke8-d7+
 112/56	00:29	 28.607k	962k	+M28	Sa3-b1 Ld8-e7 Sb1-d2 Le7-d8 Kc1-d1 Ld8-e7 Kd1-e2 b6-b5 Ke2-d3 Kf8-g8 Kd3-c3 Le7-f8 Kc3-b4 Kg8-h8 Kb4xb5 Kh8-g8 Kb5-b4 Lf8-e7 Kb4-c3 Kg8-f8 Sd2xb3 La2-b1 Sb3-d2 Lb1-c2 Kc3xc2 Le7-d8 Kc2-b3 Kf8-g8 Kb3-b4 Kg8-h8 Kb4-b5 Ld8-e7 Kb5-a6 Le7-d8 Ka6-b7 Ld8-e7 Kb7-c8 Kh8-g8 Kc8-d7 Kg8-f8 Sd2-b3 Kf8-g8 Kd7xe7 Kg8-h8 Ke7xe8 Kh8-g8 Sb3-c5 d6xc5 d5-d6 c7xd6 c6-c7 Kg8-h8 c7-c8D Kh8-g8 Ke8-d7+
Stockfish 15.1:
classical evaluation enabled

Code: Select all

1/1	00:00	 8	4k	+M28	Sa3-c4
 2/2	00:00	 20	10k	+M28	Sa3-c4 b6-b5
...
 137/56	00:43	 58.829k	1.340k	+M28	Sa3-c4 b6-b5 Sc4-d2 Ld8-e7 Kc1-d1 Kf8-g8 Kd1-e2 Kg8-h8 Ke2-d3 Le7-d8 Kd3-c3 Ld8-e7 Kc3-b4 Kh8-g8 Kb4xb5 Le7-f8 Kb5-c4 Kg8-h8 Kc4-c3 Kh8-g8 Sd2xb3 La2-b1 Sb3-d2 Lb1-a2 Kc3-b4 Lf8-e7 Kb4-b5 Le7-d8 Kb5-a6 La2xd5 e4xd5 e5-e4 Sd2xe4 Ld8-e7 Ka6-b7 Le7-f8 Kb7-c8 Lf8-e7 Kc8-d7 Le7-f8 Kd7xe8 Kg8-h8 Ke8-f7 Lf8-e7 Kf7xe7 Kh8-g8 b2-b4 Kg8-h8 b4-b5 Kh8-g8 b5-b6 c7xb6 c6-c7 Kg8-h8 c7-c8D+
 138/56	00:50	 67.555k	1.338k	+M28	Sa3-c4 b6-b5 Sc4-d2 Ld8-e7 Kc1-d1 Kf8-g8 Kd1-e2 Kg8-h8 Ke2-d3 Le7-d8 Kd3-c3 Ld8-e7 Kc3-b4 Kh8-g8 Kb4xb5 Le7-f8 Kb5-c4 Kg8-h8 Kc4-c3 Kh8-g8 Sd2xb3 La2-b1 Sb3-d2 Lb1-a2 Kc3-b4 Lf8-e7 Kb4-b5 Le7-d8 Kb5-a6 La2xd5 e4xd5 e5-e4 Sd2xe4 Ld8-e7 Ka6-b7 Le7-f8 Kb7-c8 Lf8-e7 Kc8-d7 Le7-f8 Kd7xe8 Kg8-h8 Ke8-f7 Lf8-e7 Kf7xe7 Kh8-g8 b2-b4 Kg8-h8 b4-b5 Kh8-g8 b5-b6 c7xb6 c6-c7 Kg8-h8 c7-c8D+
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