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Problem Display

PID: 3638 (2nB4/1b3B1K/2R1N3/8/1k1Np3/p1p5/p7/8 w - - 0 1)

Prevorovsky, Emil

Sach, 1941

2nB4/1b3B1K/2R1N3/8/1k1Np3/p1p5/p7/8

#3

6 + 7

SOLUTION

SOUND
Sets
- 1...Ka4
  - 2.Rc4#
Tries
- 1.Ba5+?
  - 1...Ka4
    - 2.Bxc3
      - threat
        3.Sc5#
        3.Rc4#
  - 1...Kxa5!
Keys
- 1.Sc5!
  - threat
    - 2.Sd3+
      - 2...Ka4
        3.Bb3#
        3.Rc4#
      - 2...exd3
        3.Rc4#
  - 1...Bxc6
    - 2.Sa6+
      - 2...Ka4
        3.Bb3#
  - 1...Sb6
    - 2.Rxb6+
      - 2...Ka5
        3.Sdb3#
        3.Rb1#
        3.Rb2#
        3.Rb3#
        3.Rb5#
        3.Rxb7#
      - 2...Kxc5
        3.Sb3#
  - 1...a1S
    - 2.Sd3+
      - 2...Ka4
        3.Rc4#
      - 2...exd3
        3.Rc4#
  - 1...Ba6
    - 2.Sxa6+
      - 2...Ka4
        3.Bb3#
        3.Rc4#
  - 1...Ba8
    - 2.Sd3+
      - 2...Ka4
        3.Bb3#
        3.Rc4#
        3.Ra6#
      - 2...exd3
        3.Rc4#
    - 2.Sa6+
      - 2...Ka4
        3.Bb3#
        3.Rc4#
  - 1...Sd6
    - 2.Rb6+
      - 2...Ka5
        3.Sdb3#
        3.Rb1#
        3.Rb2#
        3.Rb3#
        3.Rb5#
        3.Rxb7#
      - 2...Kxc5
        3.Sb3#
      - 2...Sb5
        3.Rxb5#
  - 1...e3
    - 2.Sd3+
      - 2...Ka4
        3.Bb3#
        3.Rc4#

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