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Problem Display

PID: 223690 (8/8/8/K7/8/1R6/6nR/k7 w - - 0 1)

Nerong, Otto

Deutsche Schachzeitung, 1930

8/8/8/K7/8/1R6/6nR/k7

#3

3 + 2

6490	yacpdb	2020

SOLUTION

SOUND
Sets
- 1...Se3
  - 2.Rxe3
    - 2...Kb1
      - 3.Re1#
Tries
- 1.Ra3+?
  - 1...Kb1
    - 2.Rxg2
      - 2...Kc1
        3.Ra1#
  - 1...Kb2!
- 1.Re3?
  - threat
    - 2.Rxg2
      - 2...Kb1
        3.Re1#
  - 1...Kb1
    - 2.Rxg2
      - threat
        3.Re1#
      - 2...Ka1
        3.Re1#
      - 2...Kc1
        3.Re1#
  - 1...Ka2
    - 2.Rxg2+
      - 2...Ka1
        3.Re1#
      - 2...Kb1
        3.Re1#
  - 1...Kb2
    - 2.Rxg2+
      - 2...Ka1
        3.Re1#
      - 2...Kb1
        3.Re1#
      - 2...Kc1
        3.Re1#
  - 1...Sxe3!
Keys
- 1.Rf3!
  - threat
    - 2.Rxg2
      - 2...Kb1
        3.Rf1#
  - 1...Kb1
    - 2.Rxg2
      - threat
        3.Rf1#
      - 2...Ka1
        3.Rf1#
      - 2...Kc1
        3.Rf1#
  - 1...Ka2
    - 2.Rxg2+
      - 2...Ka1
        3.Rf1#
      - 2...Kb1
        3.Rf1#
  - 1...Kb2
    - 2.Rxg2+
      - 2...Ka1
        3.Rf1#
      - 2...Kb1
        3.Rf1#
      - 2...Kc1
        3.Rf1#
  - 1...Se1
    - 2.Rf1
      - 2...Kb1
        3.Rxe1#
  - 1...Se3
    - 2.Rxe3
      - 2...Kb1
        3.Re1#

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