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: 135127 (3qk3/3Nn3/4Q3/4R2K/7P/8/8/8 w - - 0 1)

Visbeen, Frank

Probleemblad, 1981

3qk3/3Nn3/4Q3/4R2K/7P/8/8/8

#2

5 + 3

5454	Near Snap	2010
6490	yacpdb	2010

SOLUTION

SOUND
Sets
- 1...Qa5
  - 2.Qxe7#
- 1...Qb6
  - 2.Qxe7#
- 1...Qc7
  - 2.Qxe7#
- 1...Qxd7
  - 2.Qg8#
- 1...Qa8
  - 2.Qxe7#
- 1...Qb8
  - 2.Qxe7#
- 1...Qc8
  - 2.Qxe7#
Tries
- 1.Kg4?
  - 1...Qa5
    - 2.Qxe7#
  - 1...Qb6
    - 2.Qxe7#
  - 1...Qc7
    - 2.Qxe7#
  - 1...Qa8
    - 2.Qxe7#
  - 1...Qb8
    - 2.Qxe7#
  - 1...Qc8
    - 2.Qxe7#
  - 1...Qxd7!
- 1.Kh6?
  - 1...Qxd7
    - 2.Qg8#
  - 1...Qa5
    - 2.Qxe7#
  - 1...Qc7
    - 2.Qxe7#
  - 1...Qa8
    - 2.Qxe7#
  - 1...Qb8
    - 2.Qxe7#
  - 1...Qc8
    - 2.Qxe7#
  - 1...Qb6!
- 1.Re1?
  - 1...Qxd7
    - 2.Qg8#
  - 1...Qb6
    - 2.Qxe7#
  - 1...Qc7
    - 2.Qxe7#
  - 1...Qa8
    - 2.Qxe7#
  - 1...Qb8
    - 2.Qxe7#
  - 1...Qc8
    - 2.Qxe7#
  - 1...Qa5+!
- 1.Re2?
  - 1...Qxd7
    - 2.Qg8#
  - 1...Qb6
    - 2.Qxe7#
  - 1...Qc7
    - 2.Qxe7#
  - 1...Qa8
    - 2.Qxe7#
  - 1...Qb8
    - 2.Qxe7#
  - 1...Qc8
    - 2.Qxe7#
  - 1...Qa5+!
- 1.Re3?
  - 1...Qxd7
    - 2.Qg8#
  - 1...Qb6
    - 2.Qxe7#
  - 1...Qc7
    - 2.Qxe7#
  - 1...Qa8
    - 2.Qxe7#
  - 1...Qb8
    - 2.Qxe7#
  - 1...Qc8
    - 2.Qxe7#
  - 1...Qa5+!
- 1.Re4?
  - 1...Qxd7
    - 2.Qg8#
  - 1...Qb6
    - 2.Qxe7#
  - 1...Qc7
    - 2.Qxe7#
  - 1...Qa8
    - 2.Qxe7#
  - 1...Qb8
    - 2.Qxe7#
  - 1...Qc8
    - 2.Qxe7#
  - 1...Qa5+!
Keys
- 1.Kg5!
  - 1...Qxd7
    - 2.Qg8#
  - 1...Qa5
    - 2.Qxe7#
  - 1...Qb6
    - 2.Qxe7#
  - 1...Qc7
    - 2.Qxe7#
  - 1...Qa8
    - 2.Qxe7#
  - 1...Qb8
    - 2.Qxe7#
  - 1...Qc8
    - 2.Qxe7#

This anticipates 15389(1983)

FEATURES

Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
Sets
- Q(b);N_GUARD,P_PINR(B)::QAR1(D),XS(a)
- Q(b);N_GUARD::QAR1(D),XS(a)
- Q(b);SBLOCK,XS(E)::QAR2(D)
Tries
- Try
  - K(C);S_FLIGHT
  - Vars
    - Q(b);N_GUARD::QAR1(D),XS(a)
  - Refutation
    - Q(b);P_PINQ(D),XS(E)
- Try
  - K(C);P-FLIGHT
  - Vars
    - Q(b);SBLOCK,XS(E)::QAR2(D)
    - Q(b);N_GUARD::QAR1(D),XS(a)
  - Refutation
    - Q(b);P_PINQ(D)
- Try
  - R(B);
  - Vars
    - Q(b);SBLOCK,XS(E)::QAR2(D)
    - Q(b);N_GUARD::QAR1(D),XS(a)
  - Refutation
    - Q(b);CHECK
- Try
  - R(B);
  - Vars
    - Q(b);SBLOCK,XS(E)::QAR2(D)
    - Q(b);N_GUARD::QAR1(D),XS(a)
  - Refutation
    - Q(b);CHECK
- Try
  - R(B);
  - Vars
    - Q(b);SBLOCK,XS(E)::QAR2(D)
    - Q(b);N_GUARD::QAR1(D),XS(a)
  - Refutation
    - Q(b);CHECK
- Try
  - R(B);
  - Vars
    - Q(b);SBLOCK,XS(E)::QAR2(D)
    - Q(b);N_GUARD::QAR1(D),XS(a)
  - Refutation
    - Q(b);CHECK
Actual
- K(C);P-FLIGHT
- Vars
  - Q(b);SBLOCK,XS(E)::QAR2(D)
  - Q(b);N_GUARD,P_PINR(B)::QAR1(D),XS(a)
  - Q(b);N_GUARD::QAR1(D),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).