Meson Chess Problem Database

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Problem Display

PID: 247475 (6b1/3Q1pB1/p2p3r/3k4/5p2/1K1p1P1p/4P3/1R6 w - - 0 1)

Colle, B

British Chess Magazine, 1931

6b1/3Q1pB1/p2p3r/3k4/5p2/1K1p1P1p/4P3/1R6

#3

6 + 9

SOLUTION

SOUND
Sets
- 1...Kc5
  - 2.Qc7+
    - 2...Kb5
      - 3.Ka3#
    - 2...Kd5
      - 3.Qc4#
- 1...Re6
  - 2.Qb7+
    - 2...Kc5
      - 3.Rc1#
- 1...a5
  - 2.Kc3
    - threat
      - 3.Rb5#
    - 2...Kc5
      - 3.Rb5#
      - 3.Qb5#
Tries
- 1.Ra1?
  - threat
    - 2.Ra5#
  - 1...Kc5
    - 2.Qc7+
      - 2...Kb5
        3.Ra5#
      - 2...Kd5
        3.Qc4#
  - 1...Rf6
    - 2.Ra5+
      - 2...Kd4
        3.Qa7#
  - 1...f6!
- 1.Qc8?
  - threat
    - 2.Qc4#
  - 1...Rf6
    - 2.Bxf6
      - threat
        3.Qc4#
    - 2.Qc4+
      - 2...Ke5
        3.Qe4#
  - 1...f6!
- 1.Qb7+?
  - 1...Kc5
    - 2.Rc1#
  - 1...Ke6!
- 1.e4+?
  - 1...Kc5
    - 2.Kc3
      - threat
        3.Bd4#
        3.Qc8#
        3.Qc7#
    - 2.Qc7+
      - 2...Kb5
        3.Ka3#
  - 1...fxe4 ep!
Keys
- 1.Ba1!
  - threat
    - 2.Qc8
      - threat
        3.Qc4#
  - 1...Kc5
    - 2.Qc7+
      - 2...Kb5
        3.Ka3#
      - 2...Kd5
        3.Qc4#
  - 1...Re6
    - 2.Qb7+
      - 2...Kc5
        3.Rc1#
  - 1...d2
    - 2.Qc8
      - threat
        3.Qc4#
      - 2...d1Q+
        3.Rxd1#
      - 2...d1B+
        3.Rxd1#
  - 1...a5
    - 2.Kc3
      - threat
        3.Rb5#
      - 2...Kc5
        3.Rb5#
        3.Qb5#
      - 2...Ke5
        3.Kc4#

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