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Problem Display

PID: 176796 (8/6B1/8/p7/3R4/2P5/1k6/2RK4 w - - 0 1)

Fahrmeier, Edmund

Schach-Echo, 1963

8/6B1/8/p7/3R4/2P5/1k6/2RK4

#3

5 + 2

6490	yacpdb	2018

SOLUTION

SOUND
Sets
- 1...Ka2
  - 2.Kc2
    - threat
      - 3.Ra4#
    - 2...Ka3
      - 3.Ra1#
    - 2...a4
      - 3.Rxa4#
- 1...Ka3
  - 2.Kc2
    - threat
      - 3.Ra1#
    - 2...Ka2
      - 3.Ra4#
Tries
- 1.Rb1+?
  - 1...Ka2
    - 2.Kc2
      - threat
        3.Ra4#
      - 2...Ka3
        3.Ra1#
      - 2...a4
        3.Rxa4#
  - 1...Ka3
    - 2.Kc2
      - threat
        3.Ra1#
      - 2...Ka2
        3.Ra4#
    - 2.Rd2
      - 2...Ka4
        3.Ra2#
      - 2...a4
        3.Bf8#
  - 1...Kxc3
    - 2.Ra4+
      - 2...Kd3
        3.Rb3#
    - 2.Rdb4+
      - 2...Kd3
        3.R1b3#
    - 2.Rf4+
      - 2...Kd3
        3.Rb3#
    - 2.Rg4+
      - 2...Kd3
        3.Rb3#
    - 2.Rh4+
      - 2...Kd3
        3.Rb3#
  - 1...Kxb1!
- 1.Rd2+?
  - 1...Ka3
    - 2.Rb1
      - 2...Ka4
        3.Ra2#
      - 2...a4
        3.Bf8#
  - 1...Kb3!
Keys
- 1.Ra1!
  - 1...Kxa1
    - 2.Kc2
      - threat
        3.Ra4#
      - 2...Ka2
        3.Ra4#
      - 2...a4
        3.Rxa4#
  - 1...Kb3
    - 2.Kc1
      - 2...Kxc3
        3.Ra3#
      - 2...a4
        3.Rb4#
  - 1...Kxc3
    - 2.Rda4+
      - 2...Kb3
        3.R1a3#
      - 2...Kd3
        3.R1a3#
  - 1...a4
    - 2.Rdxa4
      - 2...Kb3
        3.Rb4#

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