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Problem Display

PID: 196998 (5N2/8/8/5n1k/Q4K2/8/8/8 w - - 0 1)

Hannemann, Knud Harald

Skakbladet, 1919

5N2/8/8/5n1k/Q4K2/8/8/8

#2

3 + 2

6490	yacpdb	2019

SOLUTION

SOUND
Tries
- 1.Qd1+?
  - 1...Kh4
    - 2.Qg4#
    - 2.Qh1#
  - 1...Kh6!
- 1.Qc2?
  - 1...Kh4
    - 2.Qh2#
  - 1...Se3
    - 2.Qh7#
    - 2.Qh2#
  - 1...Sg3
    - 2.Qh7#
    - 2.Qh2#
  - 1...Sd4
    - 2.Qh7#
    - 2.Qh2#
  - 1...Sh4
    - 2.Qh7#
  - 1...Sd6
    - 2.Qh7#
    - 2.Qh2#
  - 1...Sh6
    - 2.Qh2#
  - 1...Se7
    - 2.Qh7#
    - 2.Qh2#
  - 1...Sg7
    - 2.Qh7#
    - 2.Qh2#
  - 1...Kh6!
- 1.Qd7?
  - 1...Kh6
    - 2.Qh7#
  - 1...Se3
    - 2.Qh3#
    - 2.Qh7#
  - 1...Sg3
    - 2.Qh3#
    - 2.Qh7#
  - 1...Sd4
    - 2.Qh3#
    - 2.Qh7#
  - 1...Sh4
    - 2.Qh7#
  - 1...Sd6
    - 2.Qh3#
    - 2.Qh7#
  - 1...Sh6
    - 2.Qh3#
  - 1...Se7
    - 2.Qh3#
  - 1...Sg7
    - 2.Qh3#
  - 1...Kh4!
- 1.Qe8+?
  - 1...Kh6
    - 2.Qg6#
  - 1...Kh4!
- 1.Qe4?
  - 1...Kh4
    - 2.Qh1#
  - 1...Sh4
    - 2.Qh7#
  - 1...Se3
    - 2.Qh1#
    - 2.Qh7#
  - 1...Sg3
    - 2.Qh7#
  - 1...Sd4
    - 2.Qh1#
    - 2.Qh7#
  - 1...Sd6
    - 2.Qh1#
    - 2.Qh7#
  - 1...Sh6
    - 2.Qh1#
  - 1...Se7
    - 2.Qh1#
    - 2.Qh7#
  - 1...Sg7
    - 2.Qh1#
    - 2.Qh7#
  - 1...Kh6!
Keys
- 1.Qa1!
  - 1...Kh4
    - 2.Qh1#
  - 1...Kh6
    - 2.Qh8#
  - 1...Se3
    - 2.Qh8#
    - 2.Qh1#
  - 1...Sg3
    - 2.Qh8#
  - 1...Sd4
    - 2.Qh1#
  - 1...Sh4
    - 2.Qh8#
  - 1...Sd6
    - 2.Qh8#
    - 2.Qh1#
  - 1...Sh6
    - 2.Qh1#
  - 1...Se7
    - 2.Qh8#
    - 2.Qh1#
  - 1...Sg7
    - 2.Qh1#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
Sets
Tries
- Try
  - Q(A);CHECK
  - Refutation
    - K(b);P-FLIGHT
- Try
  - Q(A);
  - Vars
    - K(b);P-FLIGHT::QAR2(A)
    - S(a);OGATE,SBLOCK::QAR2(A)
    - S(a);N_GUARD,SBLOCK::QAR(A)
  - Refutation
    - K(b);P-FLIGHT
- Try
  - Q(A);
  - Vars
    - K(b);P-FLIGHT::QAR1(A)
    - S(a);N_GUARD,SBLOCK::QAR2(A)
    - S(a);OGATE,SBLOCK::QAR2(A)
    - S(a);OGATE::QAR2(A)
  - Refutation
    - K(b);P-FLIGHT
- Try
  - Q(A);CHECK
  - Vars
    - K(b);P-FLIGHT::QAR1(A)
  - Refutation
    - K(b);P-FLIGHT
- Try
  - Q(A);
  - Vars
    - K(b);P-FLIGHT::QAR(A)
    - S(a);OGATE,SBLOCK::QAR2(A)
    - S(a);OGATE::QAR2(A)
    - S(a);N_GUARD,SBLOCK::QAR(A)
  - Refutation
    - K(b);P-FLIGHT
Actual
- Q(A);
- Vars
  - K(b);P-FLIGHT::QAR(A)
  - K(b);P-FLIGHT::QAR2(A)
  - S(a);N_GUARD::QAR(A)
  - S(a);N_GUARD,SBLOCK::QAR(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).