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Problem Display

PID: 174695 (6RB/1Q6/8/b1p5/1p6/1Pn5/p1KN2pp/k6b w - - 0 1)

Lawton, Howard

Busmen's Chess Review, 1960

6RB/1Q6/8/b1p5/1p6/1Pn5/p1KN2pp/k6b

#3

6 + 9

SOLUTION

SOUND
Sets
- 1...c4
  - 2.bxc4
    - threat
      - 3.Sb3#
    - 2...b3+
      - 3.Sxb3#
Keys
- 1.Qg7!
  - 1...g1Q
    - 2.Qxg1+
      - 2...hxg1Q
        3.Rxg1#
      - 2...hxg1S
        3.Rxg1#
      - 2...hxg1B
        3.Rxg1#
      - 2...hxg1R
        3.Rxg1#
  - 1...g1S
    - 2.Qxg1+
      - 2...hxg1Q
        3.Rxg1#
      - 2...hxg1S
        3.Rxg1#
      - 2...hxg1B
        3.Rxg1#
      - 2...hxg1R
        3.Rxg1#
  - 1...g1B
    - 2.Qxg1+
      - 2...hxg1Q
        3.Rxg1#
      - 2...hxg1S
        3.Rxg1#
      - 2...hxg1B
        3.Rxg1#
      - 2...hxg1R
        3.Rxg1#
  - 1...g1R
    - 2.Qxg1+
      - 2...hxg1Q
        3.Rxg1#
      - 2...hxg1S
        3.Rxg1#
      - 2...hxg1B
        3.Rxg1#
      - 2...hxg1R
        3.Rxg1#
  - 1...Bb6
    - 2.Qxc3+
      - 2...bxc3
        3.Bxc3#
  - 1...Bc7
    - 2.Qxc3+
      - 2...bxc3
        3.Bxc3#
  - 1...Bd8
    - 2.Qxc3+
      - 2...bxc3
        3.Bxc3#
  - 1...c4
    - 2.bxc4
      - threat
        3.Sb3#
      - 2...b3+
        3.Sxb3#

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