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Problem Display

PID: 209312 (1Nb5/Nqbpp1B1/np1k4/1Bp1rp2/1P2pK2/8/2R4p/4Q3 w - - 0 1)

Gamza, Grigory Stepanovich

Suomen Shakki, 1991

1Nb5/Nqbpp1B1/np1k4/1Bp1rp2/1P2pK2/8/2R4p/4Q3

#3

8 + 13

SOLUTION

SOUND
Sets
- 1...Kd5
  - 2.Bc4+
    - 2...Kd4
      - 3.Sb5#
      - 3.Qd2#
      - 3.Qc3#
      - 3.Qa1#
      - 3.Qd1#
      - 3.Qe3#
    - 2...Kd6
      - 3.Sb5#
      - 3.Bxe5#
- 1...Re6
  - 2.Rd2+
    - 2...Qd5
      - 3.Sxc8#
  - 2.Qd2+
    - 2...Qd5
      - 3.Sxc8#
  - 2.Qd1+
    - 2...Qd5
      - 3.Sxc8#
- 1...e6
  - 2.Bf8+
    - 2...Kd5
      - 3.Rd2#
      - 3.Qd2#
      - 3.Qd1#
Tries
- 1.Bxe5+?
  - 1...Kd5
    - 2.Bc4#
  - 1...Ke6!
Keys
- 1.Qg3!
  - threat
    - 2.Bxe5+
      - 2...Kd5
        3.Bc4#
      - 2...Ke6
        3.Qg8#
  - 1...Kd5
    - 2.Bc4+
      - 2...Kd4
        3.Sb5#
        3.Qc3#
        3.Qe3#
      - 2...Kd6
        3.Sb5#
        3.Bxe5#
    - 2.Rd2+
      - 2...Ke6
        3.Qg6#
  - 1...Ke6
    - 2.Qg6+
      - 2...Kd5
        3.Rd2#
  - 1...cxb4
    - 2.Bxe5+
      - 2...Kd5
        3.Qb3#
      - 2...Ke6
        3.Qg8#
  - 1...Qd5
    - 2.Sxc8+
      - 2...Ke6
        3.Qg6#
  - 1...Rd5
    - 2.Qg6+
      - 2...e6
        3.Bf8#
  - 1...Re6
    - 2.Kxf5+
      - 2...Kd5
        3.Bc4#
        3.Rd2#
      - 2...Re5+
        3.Qxe5#
    - 2.Rd2+
      - 2...Qd5
        3.Sxc8#
  - 1...c4
    - 2.Bxe5+
      - 2...Kd5
        3.Bxc4#
      - 2...Ke6
        3.Qg8#
  - 1...e6
    - 2.Bf8+
      - 2...Kd5
        3.Rd2#

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