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Problem Display

PID: 205305 (8/8/1P4P1/2PN1k1K/3P4/pPP1pB1p/Q6P/2bn4 w - - 0 1)

Kubbel, Arvid Ivanovich

Shakhmaty, 1925

8/8/1P4P1/2PN1k1K/3P4/pPP1pB1p/Q6P/2bn4

#3

11 + 6

6490	yacpdb	2020

SOLUTION

SOUND
Tries
- 1.Qg2?
  - threat
    - 2.Bg4#
    - 2.Qxh3#
    - 2.Qg4#
  - 1...Sf2
    - 2.Bg4+
      - 2...Sxg4
        3.Qxg4#
  - 1...hxg2!
- 1.b4?
  - threat
    - 2.Sf4
      - threat
        3.Qf7#
      - 2...Kxf4
        3.Qf7#
      - 2...Kf6
        3.Qf7#
    - 2.Sc7
      - threat
        3.Qf7#
      - 2...Kf4
        3.Qf7#
      - 2...Kf6
        3.Qf7#
    - 2.Se7+
      - 2...Kf4
        3.Qf7#
      - 2...Kf6
        3.Qf7#
  - 1...Sxc3
    - 2.Sxc3
      - threat
        3.Qf7#
      - 2...Kf4
        3.Qf7#
      - 2...Kf6
        3.Qf7#
    - 2.Se7+
      - 2...Kf4
        3.Qf7#
      - 2...Kf6
        3.Qf7#
  - 1...Sb2
    - 2.Se7+
      - 2...Kf4
        3.Qf7#
      - 2...Kf6
        3.Qf7#
  - 1...Sf2
    - 2.Se7+
      - 2...Kf4
        3.Qf7#
      - 2...Kf6
        3.Qf7#
  - 1...e2!
Keys
- 1.Qe2!
  - threat
    - 2.Qa6
      - threat
        3.Qc8#
      - 2...Ke6
        3.Qc8#
  - 1...Ke6
    - 2.Bg4+
      - 2...Kxd5
        3.Qf3#
  - 1...Sxc3
    - 2.Qf1
      - threat
        3.Qxh3#
      - 2...Ke6
        3.Qxh3#
      - 2...Sxd5
        3.Bxd5#

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