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Problem Display

PID: 172360 (R2K4/pk6/1N6/8/1P1Q4/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1997

R2K4/pk6/1N6/8/1P1Q4/8/8/8

#2

5 + 2

6490	yacpdb	2018

SOLUTION

COOKED
Sets
- 1...axb6
  - 2.Qe4#
  - 2.Qd5#
Tries
- 1.Sa4?
  - 1...Ka6
    - 2.Qb6#
  - 1...Kc6
    - 2.Qd7#
  - 1...a5
    - 2.Qe4#
    - 2.Qd5#
  - 1...a6
    - 2.Qe4#
    - 2.Qd5#
  - 1...Kxa8!
- 1.Sc4?
  - 1...Ka6
    - 2.Qb6#
  - 1...Kc6
    - 2.Qd7#
  - 1...a5
    - 2.Qe4#
    - 2.Qd5#
  - 1...a6
    - 2.Qe4#
    - 2.Qd5#
  - 1...Kxa8!
- 1.Sd7?
  - 1...Ka6
    - 2.Qb6#
  - 1...Kxa8
    - 2.Qe4#
    - 2.Qd5#
  - 1...a5
    - 2.Qe4#
    - 2.Qd5#
  - 1...a6
    - 2.Qe4#
    - 2.Qd5#
  - 1...Kc6!
- 1.Rxa7+?
  - 1...Kc6
    - 2.Qc5#
  - 1...Kb8
    - 2.Sd7#
  - 1...Kxa7!
- 1.Rb8+?
  - 1...Ka6
    - 2.Qd3#
    - 2.Qc4#
  - 1...Kc6
    - 2.Qc5#
    - 2.Qd5#
    - 2.Qd7#
  - 1...Kxb8!
- 1.Qc5?
  - 1...axb6
    - 2.Qd5#
    - 2.Qc8#
  - 1...a5
    - 2.Qc7#
  - 1...a6
    - 2.Qc7#
  - 1...Ka6!
- 1.Qd6?
  - 1...axb6
    - 2.Qd5#
  - 1...a5
    - 2.Qc7#
  - 1...a6
    - 2.Qc7#
  - 1...Ka6!
Keys
- 1.Sc8!
  - 1...Ka6
    - 2.Qb6#
  - 1...Kc6
    - 2.Qd7#
  - 1...Kxa8
    - 2.Qxa7#
  - 1...a5
    - 2.Qe4#
    - 2.Qd5#
  - 1...a6
    - 2.Qe4#
    - 2.Qd5#
- 1.Qc4!
  - 1...Kxb6
    - 2.Rb8#
  - 1...axb6
    - 2.Qd5#
    - 2.Qe4#
    - 2.Qc8#
  - 1...a5
    - 2.Qc7#
  - 1...a6
    - 2.Qc7#

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