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Problem Display

PID: 213040 (b7/1k6/N1NP1p2/1K3B2/8/3n4/8/8 w - - 0 1)

van der Leeden, Wijnand J

Land og Folk, 1975

b7/1k6/N1NP1p2/1K3B2/8/3n4/8/8

#2

5 + 4

15148	Sadier Collection	2020

SOLUTION

SOUND
Sets
- 1...Sc1
  - 2.Sc5#
- 1...Se1
  - 2.Sc5#
- 1...Sb2
  - 2.Sc5#
- 1...Sf2
  - 2.Sc5#
- 1...Sb4
  - 2.Sc5#
- 1...Sf4
  - 2.Sc5#
- 1...Sc5
  - 2.Sxc5#
- 1...Se5
  - 2.Sc5#
Tries
- 1.Bh3?
  - 1...Sc1
    - 2.Sc5#
  - 1...Se1
    - 2.Sc5#
  - 1...Sb2
    - 2.Sc5#
  - 1...Sf2
    - 2.Sc5#
  - 1...Sb4
    - 2.Sc5#
  - 1...Sf4
    - 2.Sc5#
  - 1...Sc5
    - 2.Sxc5#
  - 1...Se5
    - 2.Sc5#
  - 1...f5!
- 1.Bg4?
  - 1...Sc1
    - 2.Sc5#
  - 1...Se1
    - 2.Sc5#
  - 1...Sb2
    - 2.Sc5#
  - 1...Sf2
    - 2.Sc5#
  - 1...Sb4
    - 2.Sc5#
  - 1...Sf4
    - 2.Sc5#
  - 1...Sc5
    - 2.Sxc5#
  - 1...Se5
    - 2.Sc5#
  - 1...f5!
- 1.Be6?
  - 1...Sc1
    - 2.Sc5#
  - 1...Se1
    - 2.Sc5#
  - 1...Sb2
    - 2.Sc5#
  - 1...Sf2
    - 2.Sc5#
  - 1...Sb4
    - 2.Sc5#
  - 1...Sf4
    - 2.Sc5#
  - 1...Sc5
    - 2.Sxc5#
  - 1...Se5
    - 2.Sc5#
  - 1...f5!
- 1.Bd7?
  - 1...Sc1
    - 2.Sc5#
  - 1...Se1
    - 2.Sc5#
  - 1...Sb2
    - 2.Sc5#
  - 1...Sf2
    - 2.Sc5#
  - 1...Sb4
    - 2.Sc5#
  - 1...Sf4
    - 2.Sc5#
  - 1...Sc5
    - 2.Sxc5#
  - 1...Se5
    - 2.Sc5#
  - 1...f5!
Keys
- 1.d7!
  - threat
    - 2.d8S#

FEATURES

Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 8
Sets
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
Tries
- Try
  - B(B);
  - Vars
    - S(a);N_GUARD::S(C)
    - S(a);N_GUARD::S(C),XS(a)
  - Refutation
    - P(b);
- Try
  - B(B);
  - Vars
    - S(a);N_GUARD::S(C)
    - S(a);N_GUARD::S(C),XS(a)
  - Refutation
    - P(b);
- Try
  - B(B);
  - Vars
    - S(a);N_GUARD::S(C)
    - S(a);N_GUARD::S(C),XS(a)
  - Refutation
    - P(b);
- Try
  - B(B);
  - Vars
    - S(a);N_GUARD::S(C)
    - S(a);N_GUARD::S(C),XS(a)
  - Refutation
    - P(b);
Actual
- P(E);
- Threat
  - P=S

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).