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Problem Display

PID: 213997 (n2k1NK1/3P4/2p5/2P2N2/5B2/3P4/8/b7 w - - 0 1)

Filaretov, Sergei P

64 Shakhmatnoe obozrenie, 1928

n2k1NK1/3P4/2p5/2P2N2/5B2/3P4/8/b7

#3

7 + 4

6490	yacpdb	2020

SOLUTION

SOUND
Sets
- 1...Bd4
  - 2.Sxd4
    - threat
      - 3.Sxc6#
    - 2...Ke7
      - 3.Bg5#
- 1...Sc7
  - 2.Bg5+
    - 2...Bf6
      - 3.Bxf6#
Tries
- 1.Sd4?
  - threat
    - 2.Sxc6#
  - 1...Ke7
    - 2.Bg5#
  - 1...Bxd4!
- 1.Sh6?
  - threat
    - 2.Sf7+
      - 2...Ke7
        3.d8Q#
    - 2.Bd6
      - threat
        3.Sf7#
  - 1...Ke7
    - 2.Bd6+
      - 2...Kf6
        3.d8Q#
        3.d8B#
      - 2...Kd8
        3.Sf7#
  - 1...Bf6
    - 2.Sf7+
      - 2...Ke7
        3.Bd6#
        3.d8Q#
    - 2.Bd6
      - threat
        3.Sf7#
  - 1...Bg7
    - 2.Sf7+
      - 2...Ke7
        3.d8Q#
  - 1...Sb6
    - 2.Sf7+
      - 2...Ke7
        3.d8Q#
  - 1...Be5!
- 1.Sg7?
  - threat
    - 2.Sge6+
      - 2...Ke7
        3.d8Q#
  - 1...Ke7
    - 2.Bd6+
      - 2...Kf6
        3.d8Q#
        3.d8B#
      - 2...Kd8
        3.Sge6#
  - 1...Bf6
    - 2.Sge6+
      - 2...Ke7
        3.Bd6#
        3.d8Q#
  - 1...Sc7
    - 2.Bg5+
      - 2...Bf6
        3.Bxf6#
  - 1...Bxg7!
Keys
- 1.d4!
  - threat
    - 2.Se7
      - threat
        3.Sxc6#
      - 2...Kxe7
        3.Bg5#
  - 1...Bxd4
    - 2.Sxd4
      - threat
        3.Sxc6#
      - 2...Ke7
        3.Bg5#
  - 1...Sb6
    - 2.cxb6
      - threat
        3.Bg5#
        3.Bc7#

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