Meson Chess Problem Database

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Problem Display

PID: 138722 (k7/b7/8/PN6/Q7/5K1B/8/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2010

k7/b7/8/PN6/Q7/5K1B/8/8

#2

5 + 2

SOLUTION

SOUND
Sets
- 1...Bb8
  - 2.Qe4#
Tries
- 1.Qc2?
  - 1...Kb7
    - 2.Qc8#
  - 1...Kb8
    - 2.Qc8#
  - 1...Bg1
    - 2.Qc8#
  - 1...Bf2
    - 2.Qc8#
  - 1...Be3
    - 2.Qc8#
  - 1...Bd4
    - 2.Qc8#
  - 1...Bb6
    - 2.Qc8#
  - 1...Bb8
    - 2.Qe4#
    - 2.Qc6#
  - 1...Bc5!
- 1.Qc4?
  - 1...Kb7
    - 2.Qc8#
  - 1...Kb8
    - 2.Qc8#
  - 1...Bg1
    - 2.Qc8#
  - 1...Bf2
    - 2.Qc8#
  - 1...Be3
    - 2.Qc8#
  - 1...Bd4
    - 2.Qc8#
  - 1...Bb6
    - 2.Qc8#
  - 1...Bb8
    - 2.Qd5#
    - 2.Qe4#
    - 2.Qc6#
  - 1...Bc5!
Keys
- 1.Qg4!
  - 1...Kb7
    - 2.Qc8#
  - 1...Kb8
    - 2.Qc8#
  - 1...Bc5
    - 2.Qc8#
  - 1...Bg1
    - 2.Qc8#
  - 1...Bf2
    - 2.Qc8#
  - 1...Be3
    - 2.Qc8#
  - 1...Bd4
    - 2.Qc8#
  - 1...Bb6
    - 2.Qc8#
  - 1...Bb8
    - 2.Qe4#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 0
Sets
- B(a);SBLOCK::QAB(C)
Tries
- Try
  - Q(C);
  - Vars
    - K(b);S_FLIGHT::QAB1(C)
    - K(b);P-FLIGHT::QAR1(C)
    - B(a);N_GUARD::QAR2(C)
  - Refutation
    - B(a);
- Try
  - Q(C);
  - Vars
    - K(b);S_FLIGHT::QAB1(C)
    - K(b);P-FLIGHT::QAR1(C)
    - B(a);N_GUARD::QAR2(C)
  - Refutation
    - B(a);
Actual
- Q(C);
- Vars
  - K(b);S_FLIGHT::QAB1(C)
  - K(b);P-FLIGHT::QAR1(C)
  - B(a);N_GUARD::QAR2(C)
  - B(a);SBLOCK::QAB(C)

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).