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Problem Display

PID: 224984 (8/2K5/8/3p4/n1pNkpR1/6R1/5B2/8 w - - 0 1)

Lehner, Sigmund Franz Josef

New York Round Table, 1869

8/2K5/8/3p4/n1pNkpR1/6R1/5B2/8

#3

5 + 5

6490	yacpdb	2020

SOLUTION

SOUND
Tries
- 1.Rxf4+?
  - 1...Ke5
    - 2.Be3
      - threat
        3.Rg5#
    - 2.Rgg4
      - threat
        3.Rf5#
  - 1...Kxf4!
Keys
- 1.Be3!
  - threat
    - 2.Bxf4
      - threat
        3.Bd6#
      - 2...Kxd4
        3.Bd6#
    - 2.Rxf4+
      - 2...Kd3
        3.Bc1#
      - 2...Ke5
        3.Rg5#
  - 1...Kd3
    - 2.Bxf4+
      - 2...Kxd4
        3.Bd6#
      - 2...Ke4
        3.Bd6#
  - 1...Ke5
    - 2.Rxf4
      - threat
        3.Rg5#
  - 1...Sc3
    - 2.Rxf4+
      - 2...Kd3
        3.Bc1#
      - 2...Ke5
        3.Rg5#
  - 1...Sb2
    - 2.Rxf4+
      - 2...Kd3
        3.Bc1#
      - 2...Ke5
        3.Rg5#
  - 1...Sc5
    - 2.Rxf4+
      - 2...Kd3
        3.Bc1#
      - 2...Ke5
        3.Rg5#
  - 1...Sb6
    - 2.Rxf4+
      - 2...Kd3
        3.Bc1#
      - 2...Ke5
        3.Rg5#
  - 1...c3
    - 2.Bxf4
      - threat
        3.Bd6#
      - 2...Kxd4
        3.Bd6#

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