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Problem Display

PID: 274928 (8/1p6/4Q3/1p6/Nk6/8/2K5/8 w - - 0 1)

Onkoud, Abdelaziz

Sachova skladba, 2023

8/1p6/4Q3/1p6/Nk6/8/2K5/8

#3

3 + 3

SOLUTION

SOUND
Sets
- 1...Ka3
  - 2.Qb3#
Tries
- 1.Sc5?
  - threat
    - 2.Sxb7
      - threat
        3.Qb3#
      - 2...Ka3
        3.Qb3#
      - 2...Ka4
        3.Qb3#
  - 1...Ka5
    - 2.Sxb7+
      - 2...Ka4
        3.Qb3#
      - 2...Kb4
        3.Qb3#
  - 1...b6
    - 2.Sd3+
      - 2...Ka3
        3.Qb3#
      - 2...Ka4
        3.Qa2#
      - 2...Ka5
        3.Qa2#
    - 2.Sa6+
      - 2...Ka3
        3.Qb3#
      - 2...Ka4
        3.Qa2#
      - 2...Ka5
        3.Qa2#
    - 2.Sb7
      - threat
        3.Qb3#
      - 2...Ka3
        3.Qb3#
      - 2...Ka4
        3.Qb3#
  - 1...Kxc5!
- 1.Qe1+?
  - 1...Ka3
    - 2.Sb6
      - threat
        3.Qa5#
      - 2...Ka2
        3.Qa5#
      - 2...b4
        3.Qa1#
  - 1...Kxa4!
Keys
- 1.Qb6!
  - threat
    - 2.Sb2
      - 2...Ka3
        3.Qa5#
  - 1...Ka3
    - 2.Qxb5
      - threat
        3.Qb3#
      - 2...Ka2
        3.Qb2#
  - 1...Kxa4
    - 2.Kc3
      - threat
        3.Qa7#
      - 2...b4+
        3.Qxb4#
      - 2...Ka3
        3.Qa5#
        3.Qa7#

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