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Problem Display

PID: 70106 (3Q4/8/3N4/8/2B1P3/6P1/3k2K1/8 w - - 0 1)

Borisenko, Ivan Dmitrovich

Shevchenko, Vitaly Ivanovich

Shinkarenko, Gennady Viktorovich

StrateGems, 2006

3Q4/8/3N4/8/2B1P3/6P1/3k2K1/8

#3

6 + 1

SOLUTION

SOUND
Sets
- 1...Ke3
  - 2.Sf5+
    - 2...Kxe4
      - 3.Qd5#
  - 2.Sf7
    - 2...Kxe4
      - 3.Qd3#
Keys
- 1.Ba2!
  - threat
    - 2.Sc4+
      - 2...Kc1
        3.Qd2#
      - 2...Ke1
        3.Qd2#
      - 2...Kc2
        3.Qd2#
      - 2...Ke2
        3.Qd2#
      - 2...Kc3
        3.Qd2#
  - 1...Kc1
    - 2.Sc4
      - 2...Kc2
        3.Qd2#
  - 1...Kd1
    - 2.Sc4+
      - 2...Kc1
        3.Qd2#
      - 2...Ke1
        3.Qd2#
      - 2...Kc2
        3.Qd2#
      - 2...Ke2
        3.Qd2#
  - 1...Ke1
    - 2.Sc4
      - 2...Ke2
        3.Qd2#
  - 1...Kc2
    - 2.Sc4
      - threat
        3.Qd2#
      - 2...Kc1
        3.Qd2#
      - 2...Kc3
        3.Qd2#
  - 1...Ke2
    - 2.Sc4
      - 2...Ke1
        3.Qd2#
  - 1...Kc3
    - 2.Sc4
      - threat
        3.Qd2#
      - 2...Kc2
        3.Qd2#
      - 2...Kb4
        3.Qa5#
  - 1...Kd3
    - 2.Sc4+
      - 2...Kc2
        3.Qd2#
      - 2...Ke2
        3.Qd2#
      - 2...Kc3
        3.Qd2#
      - 2...Kxe4
        3.Bb1#
  - 1...Ke3
    - 2.Sc4+
      - 2...Ke2
        3.Qd2#
      - 2...Kxe4
        3.Bb1#

This is after

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