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Problem Display

PID: 135903 (8/P2p2Qp/3P1PnB/2pP3R/B1p1k3/2Pn4/6P1/5K2 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Springaren, 2009

8/P2p2Qp/3P1PnB/2pP3R/B1p1k3/2Pn4/6P1/5K2

#3

11 + 7

SOLUTION

SOUND
Sets
- 1...Sh4
  - 2.Qxh7+
    - 2...Sf5
      - 3.Qxf5#
    - 2...Sg6
      - 3.Qxg6#
- 1...Se7
  - 2.Qg4+
    - 2...Sf4
      - 3.Qf3#
  - 2.Qxh7+
    - 2...Sf5
      - 3.Qxf5#
    - 2...Sg6
      - 3.Qxg6#
- 1...Sf8
  - 2.Qg3
    - threat
      - 3.Qe3#
      - 3.Qf3#
    - 2...Se5
      - 3.Rxe5#
  - 2.Qg4+
    - 2...Sf4
      - 3.Qf3#
- 1...Sh8
  - 2.Qg3
    - threat
      - 3.Qe3#
      - 3.Qf3#
    - 2...Se5
      - 3.Rxe5#
  - 2.Qg4+
    - 2...Sf4
      - 3.Qf3#
  - 2.Qxh7+
    - 2...Sg6
      - 3.Qxg6#
Tries
- 1.Qe7+?
  - 1...Sde5
    - 2.Bc2+
      - 2...Kxd5
        3.a8Q#
        3.a8B#
  - 1...Sge5
    - 2.Bc2
      - 2...Kxd5
        3.a8Q#
        3.a8B#
  - 1...Sxe7!
Keys
- 1.Bc2!
  - threat
    - 2.f7
      - 2...Sf4
        3.Re5#
        3.Qe5#
      - 2...Se5
        3.Rxe5#
        3.Qxe5#
      - 2...Sh4
        3.Re5#
        3.Qe5#
        3.Qg4#
      - 2...Se7
        3.Re5#
        3.Qe5#
        3.Qg4#
      - 2...Sf8
        3.Re5#
        3.Qe5#
        3.Qg4#
      - 2...Sh8
        3.Re5#
        3.Qe5#
        3.Qg4#
  - 1...Sf4
    - 2.Qg4
      - 2...Ke3
        3.Qe2#
    - 2.Qe7+
      - 2...Se6
        3.Qxh7#
  - 1...Se5
    - 2.Qe7
      - 2...Kxd5
        3.a8Q#
        3.a8B#

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