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Problem Display

PID: 33287 (8/8/1p6/3p4/k2B4/3Q4/8/4K3 w - - 0 1)

Lebedev, Aleksandr N

Shakhmatny Listok, 1928

8/8/1p6/3p4/k2B4/3Q4/8/4K3

#3

3 + 3

3296	Shakhmatny zadachi miniaturi	1987

SOLUTION

SOUND
Sets
- 1...Ka5
  - 2.Qb3
    - 2...Ka6
      - 3.Qxb6#
    - 2...b5
      - 3.Qa3#
Tries
- 1.Qc4+?
  - 1...Ka3
    - 2.Qb5
      - 2...Ka2
        3.Qb2#
  - 1...dxc4!
- 1.Qb5+?
  - 1...Ka3
    - 2.Kd1
      - 2...Ka2
        3.Qb2#
    - 2.Kf1
      - 2...Ka2
        3.Qb2#
    - 2.Kd2
      - 2...Ka2
        3.Qb2#
    - 2.Ke2
      - 2...Ka2
        3.Qb2#
    - 2.Kf2
      - 2...Ka2
        3.Qb2#
  - 1...Kxb5!
- 1.Qb3+?
  - 1...Ka5
    - 2.Kd1
      - 2...Ka6
        3.Qxb6#
      - 2...b5
        3.Qa3#
    - 2.Kf1
      - 2...Ka6
        3.Qxb6#
      - 2...b5
        3.Qa3#
    - 2.Kd2
      - 2...Ka6
        3.Qxb6#
      - 2...b5
        3.Qa3#
    - 2.Ke2
      - 2...Ka6
        3.Qxb6#
      - 2...b5
        3.Qa3#
    - 2.Kf2
      - 2...Ka6
        3.Qxb6#
      - 2...b5
        3.Qa3#
  - 1...Kxb3!
- 1.Qc3?
  - 1...b5
    - 2.Bc5
      - threat
        3.Qb4#
        3.Qa3#
      - 2...b4
        3.Qxb4#
  - 1...Kb5!
Keys
- 1.Qb1!
  - 1...Ka3
    - 2.Qb5
      - 2...Ka2
        3.Qb2#
  - 1...Ka5
    - 2.Qb3
      - 2...Ka6
        3.Qxb6#
      - 2...b5
        3.Qa3#
  - 1...b5
    - 2.Bc5
      - threat
        3.Qa2#
        3.Qb4#
      - 2...Ka5
        3.Qa2#
        3.Qa1#
      - 2...b4
        3.Qxb4#

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