# No.1261 (GW)

 No.1261 Günther Weeth (Германия) Оригинальные Retro & PG задачи JF – R2017-18

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 No.1261 Günther Weeth Germany original – 17.12.2017 Solution: (click to show/hide) white Ke1 Bh4h7 Pe6 black Kb8 Ra4d5 Sf6g1 Pa2a7b7c4c7d4 -17 & #1    Proca Retractor       (4+11) Anti-Circe {no animation for Defensive Retractors (JV)} 1.Ke1:Bf2[Ke1]!, Be3-f2+ 2.Kb5:Qa5[Ke1], Rd8-d5+ (remains pinned until the three move finale!) 3.Kb4-b5, Ra3-a4+ 4.Kc3-b4, Ra4-a3+ 5.Kd2-c3, Bf2-e3+ 6.Ke1-d2, Be3-f2+ 7.Kb5:Ba6[Ke1], Kc8-b8+ 8.Kb4-b5, Ra3-a4+ 9.Kc3-b4, Ra4-a3+ 10.Kd2-c3, Bf2-e3+ 11.Ke1-d2, Be3-f2+ 12.Kb4:Pb5[Ke1]!, Ra3-a4+ 13.Kc3-b4, Bf2-e3+ 14.Ke1-d2, Be3-f2+ 15.Kc6:Ra6[Ke1], 0-0- 0+ 16.Kd5-c6, S any-f6+ (bK/bR being unable to uncapture anything!) 17.Be7-h4 – fw.1.Bg6# idea: decoy of black castling pieces in such a way as to prepare the mating system; modification of the black balance (see 12 th move) in order to prevent the black castling pieces to uncapture anything after having uncastled due to the AntiCirce convention saying that AntiCirce kings and rooks regain their castling right after capturing and going back to their rebirth squares. (Author) No.1261.1 Günther Weeth Germany version of No.1261 – 16.01.2018 Solution: (click to show/hide) white Ke1 Se4 Bh4h7 Pe6 black Kb7 Ra4d5 Sf6g1 Pa2a7c2c7d3d4 -18 & #1    Proca Retractor       (5+11) Anti-Circe no animation for Defensive Retractors (JV) 1.Ke1:Bf2[Ke1]!, Be3-f2+ 2.Kb5:Qa5[Ke1], Rd8-d5+ (remains pinned until the three move finale!) 3.Kb4-b5, Ra3-a4+ 4.Kc3-b4, Ra4-a3+ 5.Kd2-c3, Bf2-e3+ 6.Ke1-d2, Be3-f2+ 7.Kb5:Ba6[Ke1], Kc8-b8+ 8.Kb4-b5, Ra3-a4+ 9.Kc3-b4, Ra4-a3+ 10.Kd2-c3, Bf2-e3+ 11.Ke1-d2, Be3-f2+ 12.Kb4:Pb5[Ke1]!, Ra3-a4+ 13.Kc3-b4, Ra4-a3+ 14. Kd2-c3, Bf2-e3+ 15.Ke1-d2, Be3-f2+ 16.Kf5:Re5[Ke1], 0-0- 0+ (bK/bR now being unable to uncapture anything for blocking square g8!) 17.Kg4-f5, S any-f6+ 18.Be7-h4 – fw.1.Bg6# (not 12.Kc4:Pb5[Ke1]?, Qb4-a5+!) IF Black tries to parry 17.Kg4-f5 by uncapturing from g8 (Kg8xX[Ke8] or Rg8xXg6[Ra8]), THEN both [bPh7] and [wPh2] must have promoted without capture, as Black has 16 pieces and black Ps have captured all 11 missing white pieces. This is impossible. So Black must retract 17. – S-f6+, after which Black has captured only 10 of the 11 missing white pieces – so [bPh7] can have promoted on h1 or even on g1 after one capture. (But if White does not make the uncapture 12.KxPb5, then Black is free to make an uncapture from g8. This is just the same as in the original version of the problem.) (Kjell Widlert) No.1261.2 Günther Weeth Germany version of No.1261 – 10.03.2018 Solution: (click to show/hide) white Ke1 Bd4g6 Rf7 Pg4 black Kb7 Ra4d5 Sf6g1 Pa2a7c2c4c7e6 -18 & #1    Proca Retractor       (5+11) Anti-Circe no animation for Defensive Retractors (JV) 1.Ke1:Bf2[Ke1]!, Be3-f2+ 2.Kb5:Qa5[Ke1], Rd8-d5+ (remains pinned until the three move finale!) 3.Kb4-b5, Ra3-a4+ 4.Kc3-b4, Ra4-a3+ 5.Kd2-c3, Bf2-e3+ 6.Ke1-d2, Be3-f2+ 7.Kb5:Ba6[Ke1], Kc8-b8+ 8.Kb4-b5, Ra3-a4+ 9.Kc3-b4, Ra4-a3+ 10.Kd2-c3, Bf2-e3+ 11.Ke1-d2, Be3-f2+ 12.Kb4:Pb5[Ke1]!, Ra3-a4+ 13.Kc3-b4, Ra4-a3+ 14. Kd2-c3, Bf2-e3+ 15.Ke1-d2, Be3-f2+ 16.Kf5:Rg5[Ke1], 0-0- 0+ (bK/bR now being unable to uncapture anything for blocking square g8!) 17.Ke4-f5, Sd7-f6+ 18.Bf6-d4 & fw.1.Rf8#, and 17...., S any-f6+ 18.Bg7-d4 & fw.1.Rd7# RA after 16th move: White has never captured before; wPh2 was captured by a black officer; bPh7 went without capturing to h1 for promotion. bPg7 cannot have captured wPh2 as then the retraction of all eight bPP would account for 12 uncaptures. Note: Pacemaker does not confirm the solution as its program is not made for a retroanalysis referring to the way the 3 rd rook is here gained. As to logic: the 12th move shows relative purity of aim when serving two purposes simultaneously: a) the bQ’s line (5 th rank) is closed and b) the balance is modified. That first purpose could as well have been achieved by uncapturing with 12.Kb4:Bb5[Ke1] with the bPd7 promoting on d1 for a bishop. Idea: decoy of black castling pieces in such a way as to prepare the mating system; modification of the black balance (see 12th move) in order to prevent the black castling pieces to uncapture anything after having uncastled due to the AntiCirce convention saying that AntiCirce kings and rooks regain their castling right after capturing and going back to their rebirth squares. (Author) No.1261.3 Günther Weeth Germany version of No.1261 – 21.05.2018 Solution: (click to show/hide) white Ke1 Bd4h5 Rf7 Pe4 black Kb7 Ra4d5 Sf6g1 Pa2a7c2c4c7e6 -18 & #1    Proca Retractor       (5+11) Anti-Circe Calvet No forward defence no animation for Defensive Retractors (JV) 1.Ke1:Bf2[Ke1]!, Be3-f2+ 2.Kb5:Qa5[Ke1], Rd8-d5+ (remains pinned until the three move finale!) 3.Kb4-b5, Ra3-a4+ 4.Kc3-b4, Ra4-a3+ 5.Kd2-c3, Bf2-e3+ 6.Ke1-d2, Be3-f2+ 7.Kb5:Ba6[Ke1], Kc8-b8+ 8.Kb4-b5, Ra3-a4+ 9.Kc3-b4, Ra4-a3+ 10.Kd2-c3, Bf2-e3+ 11.Ke1-d2, Be3-f2+ 12.Kb4:Pb5[Ke1]!, Ra3-a4+ 13.Kc3-b4, Ra4-a3+ 14. Kd2-c3, Bf2-e3+ 15.Ke1-d2, Be3-f2+ 16.Kf5:Re5[Ke1], 0-0-0+ (bK/bR now being unable to uncapture anything for blocking square g8!) 17.Kg4-f5, S any+ 18.Bc5-d4 – fw.1.Rd7#, or 17...., Sd7- f6+ 18.Bc5-d4 - fw. 1.Rf8# RA after 16th move: White has never captured before; 10 uncaptures by bPP; wPh2 was captured by a black officer; bPh7 went without capturing to h1 for promotion. bPg7 cannot have captured wPh2 as then the retraction of all eight bPP would account for 12 uncaptures. Type “Calvet” in order to exclude a dual with 16.Kg8:Rh8[Ke1] etc. Note: Pacemaker does not confirm the solution as its program is not made for a retroanalysis referring to the way the 3 rd rook is gained. As to logic: the 12 th move shows relative purity of aim when serving two purposes simultaneously: a) the bQ’s line (5 th rank) is closed and b) the balance is modified. That first purpose could as well have been achieved by uncapturing with 12.Kb4:Bb5[Ke1] with the bPd7 promoting on d1 for a bishop. Yet no logic in terms of structure with a formulated basic plan and foreplans. Idea: decoy of black castling pieces in such a way as to prepare the mating system; modification of the black balance (see 12 th move) in order to prevent the black castling pieces to uncapture anything after having uncastled due to the AntiCirce convention saying that AntiCirce kings and rooks regain their castling right after capturing and going back to their rebirth squares. (Author)

### 12 комментариев: No.1261 (GW)

1. Georgy Evseev пишет:

Is 4…a4xXb3(Pb7) impossible for some reason? It looks like balance is not broken.

• Joost de Heer пишет:

Looks like a short solution: -5. X-b3 OOO -6. Kd2-c3 Bf2-e3 -7. Ke1-d2 Be3-f2 -8. Kg4xPh3 S~ -9. Be7-h4 & 1. Bg6#

• Joost de Heer пишет:

Oh wait, the black king isn’t back on c8 yet.

2. Kjell Widlert пишет:

It really looks like a cook (insolubility) to me.

A couple of other remarks:
– Move 15 should be Kc6xRb6[Ke1], not KxRa6.
– The reason Black’s P balance must be modified is that otherwise Black could defend with 16. – Kg8xX~[Ke8] or Rg8xX~[Ra8]. It took me a while to understand this…

3. Georgy Evseev пишет:

BK should be on b7, shouldn’t it?

4. Kjell Widlert пишет:

That’s true, Georgy: bK is on b7 in the composer’s diagram.

• Julia пишет:

Sorry, corrected, bKb7.

5. Paul Rãican пишет:

Two notes about the last version:
1) NFD must be added;
2) dual: 16.Kc4xRb4(Ke1)! 0-0-0 17.Kd5-c4 S any 18.Be7-h4 & 1.Bg6#

• Kjell Widlert пишет:

I agree about NFD (=No Forward Defence): without it, Black is allowed after 6.Ke1-d2 Be3-f2+ to play the forward move c1R#.

But the reported dual seems incorrect: I believe Black can play for example 16. – Rb1-b4+ instead of retracting 0-0-0. (So it is essential that bRe5 in the author’s solution is incarcerated and cannot retract to e4 or e6.)

• Paul Rãican пишет:

16. – Rb1-b4+ is impossible: wK is then already in check from bRa4.

• Kjell Widlert пишет:

Oh sorry: you are right, Paul! There really is a dual. Perhaps the composer can use it instead of his intended continuation?

6. Kjell Widlert пишет:

The version 1261.2 seems to have a dual at the end in both sub-variations:
18.Bc5-d4 instead of 18.Bg7-d4 and 18.Bf6-d4, respectively.

(I have informed the composer.)