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Problem Display

PID: 255839 (Q7/8/8/5p2/5ppR/8/3K1kB1/8 w - - 0 1)

van Rey, Loek

Probleemblad, 1984

Q7/8/8/5p2/5ppR/8/3K1kB1/8

#4

4 + 4

SOLUTION

SOUND
Keys
- 1.Qa1!
  - threat
    - 2.Bh1
      - threat
        3.Qe1#
      - 2...Kg3
        3.Qe1#
  - 1...Kxg2
    - 2.Qh1+
      - 2...Kf2
        3.Rh2+
        3...Kg3
        4.Qg2#
      - 2...Kg3
        3.Ke1
        3...f3
        4.Qh2#
  - 1...Kg3
    - 2.Qh1
      - threat
        3.Ke1
        3...f3
        4.Qh2#
        3.Bf1
        3...Kf2
        4.Qg2#
        3...f3
        4.Qh2#
        3.Bf3
        3...Kf2
        4.Qg2#
        3...gxf3
        4.Qh2#
        3.Bd5
        threat
        4.Qe1#
        4.Qh2#
        3...Kf2
        4.Qg2#
        4.Qe1#
        3.Bc6
        threat
        4.Qe1#
        4.Qh2#
        3...Kf2
        4.Qg2#
        4.Qe1#
        3.Bb7
        threat
        4.Qe1#
        4.Qh2#
        3...Kf2
        4.Qg2#
        4.Qe1#
        3.Ba8
        threat
        4.Qe1#
        4.Qh2#
        3...Kf2
        4.Qg2#
        4.Qe1#
      - 2...Kf2
        3.Qh2
        3...f3
        4.Bh3#
        3...g3
        4.Rxf4#
      - 2...f3
        3.Qh2+
        3...Kf2
        4.Bh3#
  - 1...f3
    - 2.Qh1
      - 2...Kg3
        3.Qh2+
        3...Kf2
        4.Bh3#
      - 2...fxg2
        3.Qe1+
        3...Kf3
        4.Qe3#
      - 2...f4
        3.Rxg4
        3...fxg2
        4.Qxg2#

FEATURES

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Developed and maintained by Brian Stephenson.
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