Meson Chess Problem Database

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Problem Display

PID: 211724 (8/8/8/1Bn5/2P5/3kBK2/8/2R5 w - - 0 1)

Lewis, Robert Tony

The Problemist, 1986

8/8/8/1Bn5/2P5/3kBK2/8/2R5

#2

5 + 2

SOLUTION

SOUND
Sets
- 1...Sb3
  - 2.c5#
- 1...Sa4
  - 2.c5#
- 1...Se4
  - 2.c5#
- 1...Sa6
  - 2.c5#
- 1...Se6
  - 2.c5#
- 1...Sb7
  - 2.c5#
- 1...Sd7
  - 2.c5#
Tries
- 1.Ba6?
  - 1...Sb3
    - 2.c5#
  - 1...Sa4
    - 2.c5#
  - 1...Se4
    - 2.c5#
  - 1...Se6
    - 2.c5#
  - 1...Sb7
    - 2.c5#
  - 1...Sd7
    - 2.c5#
  - 1...Sxa6!
- 1.Be8?
  - 1...Sb3
    - 2.Bg6#
  - 1...Sa4
    - 2.Bg6#
  - 1...Sa6
    - 2.Bg6#
  - 1...Se6
    - 2.Bg6#
  - 1...Sb7
    - 2.Bg6#
  - 1...Sd7
    - 2.Bg6#
  - 1...Se4!
Keys
- 1.Bc6!
  - 1...Sb3
    - 2.Be4#
  - 1...Sa4
    - 2.Be4#
  - 1...Se4
    - 2.Bxe4#
  - 1...Sa6
    - 2.Be4#
  - 1...Se6
    - 2.Be4#
  - 1...Sb7
    - 2.Be4#
  - 1...Sd7
    - 2.Be4#

FEATURES

Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
Sets
- S(b);OGATE::B(E)+P(D)
Tries
- Try
  - B(E);
  - Vars
    - S(b);OGATE::B(E)+P(D)
  - Refutation
    - S(b);XB(E)
- Try
  - B(E);
  - Vars
    - S(b);N_GUARD::B(E)
  - Refutation
    - S(b);
Actual
- B(E);
- Vars
  - S(b);N_GUARD::B(E)
  - S(b);N_GUARD::B(E),XS(b)

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).