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Problem Display

PID: 238394 (8/n4p2/3Q2R1/8/4pN2/4kn2/N3P1K1/6b1 w - - 0 1)

Brock, David Thurston

Dubuque Chess Journal, 1874

8/n4p2/3Q2R1/8/4pN2/4kn2/N3P1K1/6b1

#3

6 + 6

6490	yacpdb	2021

SOLUTION

SOUND
Sets
- 1...Bh2
  - 2.Qc5+
    - 2...Kd2
      - 3.Qc1#
    - 2...Kxf4
      - 3.e3#
    - 2...Sd4
      - 3.Qc1#
- 1...Sd2
  - 2.Sc3
    - threat
      - 3.Sd1#
  - 2.Sb4
    - threat
      - 3.Sc2#
  - 2.Qc5+
    - 2...Kxf4
      - 3.Qg5#
- 1...Sh2
  - 2.Sc3
    - threat
      - 3.Sd1#
  - 2.Sb4
    - threat
      - 3.Sc2#
  - 2.Qc5+
    - 2...Kd2
      - 3.Qc1#
    - 2...Kxf4
      - 3.Qg5#
- 1...Sd4
  - 2.Qc5
    - threat
      - 3.Qc1#
    - 2...Kd2
      - 3.Qc1#
    - 2...Kxf4
      - 3.Qg5#
- 1...Sg5
  - 2.Kf1
    - threat
      - 3.Sg2#
  - 2.Sc3
    - threat
      - 3.Sd1#
  - 2.Sb4
    - threat
      - 3.Sc2#
  - 2.Qc5+
    - 2...Kd2
      - 3.Qc1#
    - 2...Kxf4
      - 3.Qxg5#
Tries
- 1.Qa3+?
  - 1...Kd2
    - 2.Qc1#
  - 1...Kd4
    - 2.Qc3#
  - 1...Kxf4!
- 1.Qc5+?
  - 1...Kd2
    - 2.Qc1#
  - 1...Sd4
    - 2.Qc1#
  - 1...Kxf4!
Keys
- 1.Qb6+!
  - 1...Kd2
    - 2.Qb2+
      - 2...Kd1
        3.Qc1#
      - 2...Ke1
        3.Qc1#
      - 2...Ke3
        3.Sd5#
  - 1...Kxf4
    - 2.e3+
      - 2...Ke5
        3.Qc5#
      - 2...Kf5
        3.Qf6#
      - 2...Bxe3
        3.Qf6#
  - 1...Sd4
    - 2.Qc5
      - threat
        3.Qc1#
      - 2...Kd2
        3.Qc1#
      - 2...Kxf4
        3.Qg5#

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