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Problem Display

PID: 12625 (B7/4N3/8/8/5k1P/4p2p/4Q3/4K3 w - - 0 1)

Bantysh, Nikolai Ivanovich

StrateGems, 2000

B7/4N3/8/8/5k1P/4p2p/4Q3/4K3

#3

5 + 3

SOLUTION

SOUND
Sets
- 1...Kg3
  - 2.Sg6
    - 2...h2
      - 3.Qf3#
      - 3.Qg2#
Tries
- 1.Sg6+?
  - 1...Kg3
    - 2.Kd1
      - 2...h2
        3.Qf3#
        3.Qg2#
    - 2.Kf1
      - 2...h2
        3.Qf3#
        3.Qg2#
    - 2.Bh1
      - 2...h2
        3.Qf3#
        3.Qg2#
    - 2.Bf3
      - 2...h2
        3.Qg2#
    - 2.Be4
      - 2...h2
        3.Qf3#
        3.Qg2#
    - 2.Bd5
      - 2...h2
        3.Qf3#
        3.Qg2#
    - 2.Bc6
      - 2...h2
        3.Qf3#
        3.Qg2#
    - 2.Bb7
      - 2...h2
        3.Qf3#
        3.Qg2#
    - 2.Qxe3+
      - 2...Kh2
        3.Qf2#
      - 2...Kg4
        3.Qg5#
        3.Qf3#
    - 2.h5
      - 2...h2
        3.Qf3#
        3.Qg2#
  - 1...Kf5!
- 1.Qb5?
  - threat
    - 2.Qg5#
  - 1...Kg4
    - 2.Qg5#
  - 1...Kg3!
- 1.Qxe3+?
  - 1...Kg4
    - 2.Qg5#
  - 1...Kxe3!
Keys
- 1.Sg8!
  - threat
    - 2.Qf3+
      - 2...Ke5
        3.Qf6#
  - 1...Kg3
    - 2.Sh6
      - 2...Kf4
        3.Qh2#
      - 2...Kxh4
        3.Qg4#
      - 2...h2
        3.Qg4#
  - 1...Ke5
    - 2.Qxe3+
      - 2...Kf5
        3.Qe4#
      - 2...Kd6
        3.Qe7#
  - 1...Kf5
    - 2.Qh5+
      - 2...Kf4
        3.Qg5#
      - 2...Ke6
        3.Qd5#

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