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Problem Display

PID: 135251 (7R/8/8/8/5K2/4BnP1/2P1k1P1/R7 w - - 0 1)

Nimzovich, Aaron Isayevich

Deutsche Schachzeitung, 1918

7R/8/8/8/5K2/4BnP1/2P1k1P1/R7

#3

7 + 2

SOLUTION

SOUND
Sets
- 1...Sg1
  - 2.Rh2
    - 2...Sh3+
      - 3.gxh3#
    - 2...Sf3
      - 3.gxf3#
Keys
- 1.Rhh1!
  - threat
    - 2.Rhb1
      - 2...Se1
        3.Rxe1#
      - 2...Sg1
        3.Re1#
      - 2...Sd2
        3.Re1#
      - 2...Sh2
        3.Re1#
      - 2...Sd4
        3.Re1#
      - 2...Sh4
        3.Re1#
      - 2...Se5
        3.Re1#
      - 2...Sg5
        3.Re1#
    - 2.Rhc1
      - 2...Se1
        3.Rxe1#
      - 2...Sg1
        3.Re1#
      - 2...Sd2
        3.Re1#
      - 2...Sh2
        3.Re1#
      - 2...Sd4
        3.Re1#
      - 2...Sh4
        3.Re1#
      - 2...Se5
        3.Re1#
      - 2...Sg5
        3.Re1#
    - 2.Rhd1
      - 2...Se1
        3.Rxe1#
      - 2...Sg1
        3.Re1#
        3.Rd2#
      - 2...Sd2
        3.Re1#
        3.Rxd2#
      - 2...Sh2
        3.Re1#
        3.Rd2#
      - 2...Sd4
        3.Re1#
        3.Rd2#
      - 2...Sh4
        3.Re1#
        3.Rd2#
      - 2...Se5
        3.Re1#
        3.Rd2#
      - 2...Sg5
        3.Re1#
        3.Rd2#
    - 2.Rhf1
      - threat
        3.Rf2#
  - 1...Sg1
    - 2.Rh2
      - 2...Sh3+
        3.gxh3#
      - 2...Sf3
        3.gxf3#

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