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Problem Display

PID: 276645 (K7/8/pp2R2p/3Ppk2/R3p1pP/1BB3P1/3P1p2/1b4b1 w - - 0 1)

Korolkov, Vladimir Aleksandrovich

Stella Polaris, 1970

K7/8/pp2R2p/3Ppk2/R3p1pP/1BB3P1/3P1p2/1b4b1

#4

9 + 10

SOLUTION

COOKED
Keys
- 1.Bb4!
  - threat
    - 2.Be7
      - threat
        3.Rf6#
  - 1...e3
    - 2.Be7
      - threat
        3.Rf6#
      - 2...e4
        3.d4
        threat
        4.Rf6#
        3...exd4 ep
        4.Rf4#
- 1.d4!
  - threat
    - 2.dxe5
      - threat
        3.Rf6#
  - 1...exd4
    - 2.Bxd4
      - threat
        3.Rf6#
      - 2...e3
        3.Ba1
        threat
        4.Rf4#
        4.Rf6#
        3.Bb2
        threat
        4.Rf4#
        4.Rf6#
        3.Bc3
        threat
        4.Rf4#
        4.Rf6#
    - 2.Rc4
      - threat
        3.Rc7
        threat
        4.Rf7#
        3.Rc8
        threat
        4.Rf8#
  - 1...exd4 ep
    - 2.Bd1
      - threat
        3.Bxg4#
      - 2...h5
        3.Re4
        threat
        4.R4xe5#
        3...Kxe4
        4.Rxe5#
  - 1...f1Q
    - 2.dxe5
      - threat
        3.Rf6#
      - 2...Bd4
        3.Rf6+
        3...Kxe5
        4.Bxd4#
  - 1...f1S
    - 2.dxe5
      - threat
        3.Rf6#
      - 2...Bd4
        3.Rf6+
        3...Kxe5
        4.Bxd4#
  - 1...f1B
    - 2.dxe5
      - threat
        3.Rf6#
      - 2...Bd4
        3.Rf6+
        3...Kxe5
        4.Bxd4#
  - 1...f1R
    - 2.dxe5
      - threat
        3.Rf6#
      - 2...Bd4
        3.Rf6+
        3...Kxe5
        4.Bxd4#

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