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Problem Display

PID: 225141 (1RK5/R7/r7/k7/N2pp3/p3p3/1PPb4/8 w - - 0 1)

Taffs, Anthony John

US Problem Bulletin, 1966

1RK5/R7/r7/k7/N2pp3/p3p3/1PPb4/8

#3

6 + 7

SOLUTION

SOUND
Sets
- 1...Kxa4
  - 2.Rxa6+
    - 2...Ba5
      - 3.b3#
- 1...Bc1
  - 2.Sc5
    - threat
      - 3.Rxa6#
      - 3.b4#
  - 2.b4+
    - 2...Kxa4
      - 3.Rxa6#
Tries
- 1.Rb6?
  - threat
    - 2.Raxa6#
  - 1...Kxa4
    - 2.Raxa6+
      - 2...Ba5
        3.b3#
    - 2.b3+
      - 2...Ka5
        3.Raxa6#
  - 1...Rxa7!
- 1.b4+?
  - 1...Kxa4
    - 2.Rxa6#
  - 1...Bxb4!
Keys
- 1.c4!
  - threat
    - 2.Sc5
      - threat
        3.Rxa6#
        3.Rb5#
    - 2.Rxa6+
      - 2...Kxa6
        3.Ra8#
    - 2.Rb5+
      - 2...Kxa4
        3.b3#
  - 1...Kxa4
    - 2.Rxa6+
      - 2...Ba5
        3.b3#
    - 2.b3+
      - 2...Ka5
        3.Rb5#
  - 1...Rxa7
    - 2.Rb5+
      - 2...Kxa4
        3.b3#
      - 2...Ka6
        3.Sc5#
  - 1...axb2
    - 2.Sc5
      - threat
        3.Rxa6#
        3.Rb5#
    - 2.Rxa6+
      - 2...Kxa6
        3.Ra8#
  - 1...dxc4 ep
    - 2.Sc5
      - threat
        3.Rxa6#
        3.b4#
  - 1...Bc1
    - 2.Sc5
      - threat
        3.Rxa6#
        3.Rb5#
        3.b4#
    - 2.Rxa6+
      - 2...Kxa6
        3.Ra8#
    - 2.Rb5+
      - 2...Kxa4
        3.Rxa6#
        3.b3#
  - 1...Bb4
    - 2.Rxa6+
      - 2...Kxa6
        3.Ra8#
  - 1...a2
    - 2.Sc5
      - threat
        3.Rxa6#
        3.Rb5#
    - 2.Rxa6+
      - 2...Kxa6
        3.Ra8#

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