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: 283046 (3Nk3/4P3/1n3B2/6K1/8/7Q/8/8 w - - 0 1)

Reitman, Mark

Springaren, 1994

3Nk3/4P3/1n3B2/6K1/8/7Q/8/8

#2

5 + 2

5454	Near Snap	2026

SOLUTION

SOUND
Sets
- 1...Sd7
  - 2.Qh5#
Tries
- 1.Qg4?
  - 1...Sa4
    - 2.Qxa4#
  - 1...Sd5
    - 2.Qa4#
  - 1...Sd7
    - 2.Qh5#
  - 1...Sa8
    - 2.Qa4#
  - 1...Sc8
    - 2.Qa4#
  - 1...Sc4!
- 1.Qf5?
  - 1...Sa4
    - 2.Qb5#
  - 1...Sc4
    - 2.Qb5#
  - 1...Sd7
    - 2.Qg6#
  - 1...Sa8
    - 2.Qb5#
  - 1...Sc8
    - 2.Qb5#
  - 1...Sd5!
- 1.Qh1?
  - 1...Kd7
    - 2.Qc6#
  - 1...Sa4
    - 2.Qc6#
  - 1...Sc4
    - 2.Qc6#
  - 1...Sd7
    - 2.Qh5#
  - 1...Sa8
    - 2.Qc6#
  - 1...Sc8
    - 2.Qc6#
  - 1...Sd5!
- 1.Qb3?
  - 1...Sa4
    - 2.Qxa4#
    - 2.Qb5#
  - 1...Sc4
    - 2.Qa4#
    - 2.Qb5#
  - 1...Sd5
    - 2.Qa4#
    - 2.Qb5#
  - 1...Sd7
    - 2.Qf7#
  - 1...Sa8
    - 2.Qa4#
    - 2.Qb5#
  - 1...Sc8
    - 2.Qa4#
    - 2.Qb5#
  - 1...Kd7!
- 1.Qd3?
  - 1...Sd5
    - 2.Qb5#
  - 1...Sa4
    - 2.Qb5#
  - 1...Sd7
    - 2.Qg6#
  - 1...Sa8
    - 2.Qb5#
  - 1...Sc8
    - 2.Qb5#
  - 1...Sc4!
- 1.Qf3?
  - 1...Kd7
    - 2.Qc6#
  - 1...Sa4
    - 2.Qc6#
  - 1...Sc4
    - 2.Qc6#
  - 1...Sd7
    - 2.Qh5#
  - 1...Sa8
    - 2.Qc6#
  - 1...Sc8
    - 2.Qc6#
  - 1...Sd5!
Keys
- 1.Qe6!
  - 1...Sa4
    - 2.Qc6#
  - 1...Sc4
    - 2.Qc6#
  - 1...Sd5
    - 2.Qc6#
  - 1...Sd7
    - 2.Qf7#
  - 1...Sa8
    - 2.Qc6#
  - 1...Sc8
    - 2.Qc6#

Anticipated by 147635(1969)

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
Sets
- S(a);SBLOCK::QAB(A)
Tries
- Try
  - Q(A);
  - Vars
    - S(a);N_GUARD::QAB(A),XS(a)
    - S(a);N_GUARD::QAB(A)
    - S(a);SBLOCK::QAB(A)
  - Refutation
    - S(a);
- Try
  - Q(A);
  - Vars
    - S(a);N_GUARD::QAB(A)
    - S(a);SBLOCK::QAB(A)
  - Refutation
    - S(a);
- Try
  - Q(A);
  - Vars
    - K(b);S_CUTS(a),S_FLIGHT::QAB1(A)
    - S(a);N_GUARD::QAB(A)
    - S(a);SBLOCK::QAB(A)
  - Refutation
    - S(a);
- Try
  - Q(A);
  - Vars
    - S(a);SBLOCK::QAB1(A)
  - Refutation
    - K(b);S_FLIGHT
- Try
  - Q(A);
  - Vars
    - S(a);N_GUARD::QAB(A)
    - S(a);SBLOCK::QAB(A)
  - Refutation
    - S(a);
- Try
  - Q(A);
  - Vars
    - K(b);S_CUTS(a),S_FLIGHT::QAB1(A)
    - S(a);N_GUARD::QAB(A)
    - S(a);SBLOCK::QAB(A)
  - Refutation
    - S(a);
Actual
- Q(A);
- Vars
  - S(a);N_GUARD::QAB(A)
  - S(a);SBLOCK::QAB1(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).