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Problem Display

PID: 34289 (8/8/8/3P4/2N3p1/6p1/6p1/2Q1K1k1 w - - 0 1)

Loyd, Sam

The Chess Monthly (Morphy/Fiske), 1857

8/8/8/3P4/2N3p1/6p1/6p1/2Q1K1k1

#4

4 + 4

5206	Sam Loyd and His Chess Problems	1913

SOLUTION

SOUND
Keys
- 1.Kd1!
  - 1...Kf1
    - 2.Kc2+
      - 2...Ke2
        3.Qe3+
        3...Kf1
        4.Sd2#
        3.Qg1
        3...Kf3
        4.Qe3#
      - 2...Kf2
        3.Qe3+
        3...Kf1
        4.Sd2#
    - 2.Kd2+
      - 2...Kf2
        3.Qe1+
        3...Kf3
        4.Qe3#
    - 2.Qb2
      - threat
        3.Se3+
        3...Kg1
        4.Qxg2#
      - 2...Kg1
        3.Se3
        threat
        4.Qxg2#
        3...Kh1
        4.Qxg2#
        3...Kh2
        4.Qxg2#
    - 2.Qd2
      - threat
        3.Qe1#
      - 2...Kg1
        3.Se3
        threat
        4.Qxg2#
        3...Kh1
        4.Qxg2#
        3...Kh2
        4.Qxg2#
    - 2.Qe3
      - threat
        3.Sd2#
        3.Qe1#
      - 2...g1S
        3.Qxg3
        threat
        4.Sd2#
        4.Se3#
    - 2.Qc2
      - threat
        3.Se3+
        3...Kg1
        4.Qxg2#
      - 2...Kg1
        3.Se3
        threat
        4.Qxg2#
        3...Kh1
        4.Qxg2#
        3...Kh2
        4.Qxg2#
  - 1...Kh1
    - 2.Qh6+
      - 2...Kg1
        3.Sd2
        3...Kf2
        4.Qb6#
  - 1...Kh2
    - 2.Qh6+
      - 2...Kg1
        3.Sd2
        3...Kf2
        4.Qb6#

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