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Problem Display

PID: 278101 (3B4/5pn1/7p/1K3pN1/R3pk2/5P2/2N2P2/8 w - - 0 1)

Dowd, Steven B

Phenix, 2007

3B4/5pn1/7p/1K3pN1/R3pk2/5P2/2N2P2/8

#4

7 + 6

SOLUTION

SOUND
Keys
- 1.Sd4!
  - threat
    - 2.Se2+
      - 2...Ke5
        3.f4+
        3...Kd5
        4.Rd4#
        3...Kd6
        4.Rd4#
    - 2.Kc6
      - threat
        3.Se2+
        3...Ke5
        4.Ra5#
        4.f4#
        3.Sh3+
        3...Ke5
        4.f4#
        3.Kd5
        threat
        4.Se2#
        4.Sh3#
        3...hxg5
        4.Bc7#
      - 2...Ke5
        3.Sxf7+
        3...Kf4
        4.Bc7#
      - 2...f6
        3.Sh3+
        3...Ke5
        4.Bc7#
        4.f4#
      - 2...Sh5
        3.Se2+
        3...Ke5
        4.Ra5#
        3.Sxf7
        threat
        4.Bc7#
        3...exf3
        4.Sc2#
        4.Se2#
        4.Sb3#
        4.Sb5#
        4.Se6#
      - 2...Se6
        3.Se2+
        3...Ke5
        4.Sxf7#
  - 1...Ke5
    - 2.Sc6+
      - 2...Kf4
        3.Ra3
        threat
        4.Sh3#
        3...exf3
        4.Ra4#
        3...hxg5
        4.Bc7#
        3...e3
        4.Ra4#
  - 1...f6
    - 2.Sh3+
      - 2...Ke5
        3.Bc7+
        3...Kd5
        4.Sf4#
  - 1...Se6
    - 2.Se2+
      - 2...Ke5
        3.Sxf7+
        3...Kd5
        4.Sc3#

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