Meson Chess Problem Database

Home
Latest Additions
- #2
- #3
- #4
- #5
- Stats
Books
- All composers (SLOW)
- By initial letter
Magazines
- PID
- General
- Matrix
- All sources/quoters (SLOW)
- By initial letter
- Awards
- Composers
- Decades
- Quoters
- Sizes
- Soundness
- Sources
- Stipulations
- Years
Contact
Back to BDS Website

Problem Display

PID: 16797 (8/8/2ppp3/P2k1p2/5Q2/4Kn2/4B3/8 w - - 0 1)

Ling, John Francis

Evening News, 1943

8/8/2ppp3/P2k1p2/5Q2/4Kn2/4B3/8

#2

4 + 6

SOLUTION

SOUND
Sets
- 1...Kc5
  - 2.Qc4#
- 1...Se1
  - 2.Qd4#
- 1...Sg1
  - 2.Qd4#
- 1...Sd2
  - 2.Qd4#
- 1...Sh2
  - 2.Qd4#
- 1...Sd4
  - 2.Qxd4#
- 1...Sh4
  - 2.Qd4#
- 1...Se5
  - 2.Qd4#
- 1...Sg5
  - 2.Qd4#
- 1...c5
  - 2.Bxf3#
- 1...e5
  - 2.Qc4#
Tries
- 1.Kxf3?
  - 1...Kc5
    - 2.Qc4#
  - 1...e5
    - 2.Qc4#
  - 1...c5!
- 1.Bf1?
  - 1...Kc5
    - 2.Qc4#
  - 1...e5
    - 2.Qc4#
  - 1...Se1
    - 2.Qd4#
  - 1...Sg1
    - 2.Qd4#
  - 1...Sd2
    - 2.Qd4#
  - 1...Sh2
    - 2.Qd4#
  - 1...Sd4
    - 2.Qxd4#
  - 1...Sh4
    - 2.Qd4#
  - 1...Se5
    - 2.Qd4#
  - 1...Sg5
    - 2.Qd4#
  - 1...c5!
- 1.Bd3?
  - 1...Kc5
    - 2.Qc4#
  - 1...e5
    - 2.Qc4#
  - 1...Se1
    - 2.Qd4#
  - 1...Sg1
    - 2.Qd4#
  - 1...Sd2
    - 2.Qd4#
  - 1...Sh2
    - 2.Qd4#
  - 1...Sd4
    - 2.Qxd4#
  - 1...Sh4
    - 2.Qd4#
  - 1...Se5
    - 2.Qd4#
  - 1...Sg5
    - 2.Qd4#
  - 1...c5!
- 1.Qe4+?
  - 1...Kc5
    - 2.Qc4#
  - 1...fxe4!
- 1.a6?
  - 1...e5
    - 2.Qc4#
  - 1...c5
    - 2.Bxf3#
  - 1...Se1
    - 2.Qd4#
  - 1...Sg1
    - 2.Qd4#
  - 1...Sd2
    - 2.Qd4#
  - 1...Sh2
    - 2.Qd4#
  - 1...Sd4
    - 2.Qxd4#
  - 1...Sh4
    - 2.Qd4#
  - 1...Se5
    - 2.Qd4#
  - 1...Sg5
    - 2.Qd4#
  - 1...Kc5!
Keys
- 1.Ba6!
  - 1...Kc5
    - 2.Qc4#
  - 1...e5
    - 2.Qc4#
  - 1...c5
    - 2.Bb7#
  - 1...Se1
    - 2.Qd4#
  - 1...Sg1
    - 2.Qd4#
  - 1...Sd2
    - 2.Qd4#
  - 1...Sh2
    - 2.Qd4#
  - 1...Sd4
    - 2.Qxd4#
  - 1...Sh4
    - 2.Qd4#
  - 1...Se5
    - 2.Qd4#
  - 1...Sg5
    - 2.Qd4#

FEATURES

Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
Sets
- K(b);P-FLIGHT::QAR1(C)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- P(d);SBLOCK::B(A),XS(a)
- P(f);SBLOCK::QAB1(C)
Tries
- Try
  - K(B);P-FLIGHT,XS(a)
  - Vars
    - K(b);P-FLIGHT::QAR1(C)
    - P(f);SBLOCK::QAB1(C)
  - Refutation
    - P(d);
- Try
  - B(A);
  - Vars
    - K(b);P-FLIGHT::QAR1(C)
    - P(f);SBLOCK::QAB1(C)
    - S(a);N_GUARD::QAR1(C)
    - S(a);N_GUARD::QAR1(C),XS(a)
  - Refutation
    - P(d);
- Try
  - B(A);
  - Vars
    - K(b);P-FLIGHT::QAR1(C)
    - P(f);SBLOCK::QAB1(C)
    - S(a);N_GUARD::QAR1(C)
    - S(a);N_GUARD::QAR1(C),XS(a)
  - Refutation
    - P(d);
- Try
  - Q(C);CHECK
  - Vars
    - K(b);P-FLIGHT::QAR1(C)
  - Refutation
    - P(c);XQ(C)
- Try
  - P(D);
  - Vars
    - P(f);SBLOCK::QAB1(C)
    - P(d);SBLOCK::B(A),XS(a)
    - S(a);N_GUARD::QAR1(C)
    - S(a);N_GUARD::QAR1(C),XS(a)
  - Refutation
    - K(b);P-FLIGHT
Actual
- B(A);
- Vars
  - K(b);P-FLIGHT::QAR1(C)
  - P(f);SBLOCK::QAB1(C)
  - P(d);OGATEB,SBLOCK::B(A)
  - S(a);N_GUARD::QAR1(C)
  - S(a);N_GUARD::QAR1(C),XS(a)

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).