No.1261 (GW)

Günther Weeth (Germany)

Original Retro & PG problems
JF – R2017-18

Definitions: (click to show/hide)

No.1261 Günther Weeth

original – 17.12.2017

Solution: (click to show/hide)

white Ke1 Bh4h7 Pe6 black Kb8 Ra4d5 Sf6g1 Pa2a7b7c4c7d4

-17 & #1    Proca Retractor       (4+11)

No.1261.1 Günther Weeth

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)

No.1261.2 Günther Weeth

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)

12 Responses to No.1261 (GW)

  1. Georgy EvseevGeorgy Evseev says:

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

  2. Kjell Widlert says:

    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 EvseevGeorgy Evseev says:

    BK should be on b7, shouldn’t it?

  4. Kjell Widlert says:

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

  5. Paul Rãican says:

    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 says:

      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.)

  6. Kjell Widlert says:

    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.)

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