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Problem Display

PID: 101524 (8/5p2/2K1pr2/4k3/1Q6/2nP1pP1/5P2/8 w - - 0 1)

Guidelli, Giorgio

Good Companions (July), 1917

8/5p2/2K1pr2/4k3/1Q6/2nP1pP1/5P2/8

#2

5 + 6

6490	yacpdb	2009

SOLUTION

SOUND
Sets
- 1...Rf4
  - 2.Qxf4#
- 1...Rf5
  - 2.Qxc3#
- 1...Rg6
  - 2.Qf4#
- 1...Rh6
  - 2.Qf4#
- 1...Sb1
  - 2.Qc5#
  - 2.Qe4#
- 1...Sd1
  - 2.Qc5#
  - 2.Qe4#
- 1...Sa2
  - 2.Qc5#
  - 2.Qe4#
- 1...Se2
  - 2.Qc5#
  - 2.Qe4#
- 1...Sa4
  - 2.Qe4#
- 1...Se4
  - 2.Qxe4#
- 1...Sb5
  - 2.Qc5#
  - 2.Qe4#
- 1...Sd5
  - 2.Qe4#
Tries
- 1.Qc4?
  - 1...Rf4
    - 2.Qxf4#
  - 1...Rg6
    - 2.Qf4#
  - 1...Rh6
    - 2.Qf4#
  - 1...Rf5
    - 2.Qxc3#
  - 1...Sb1
    - 2.Qe4#
    - 2.Qc5#
  - 1...Sd1
    - 2.Qe4#
    - 2.Qc5#
  - 1...Sa2
    - 2.Qe4#
    - 2.Qc5#
  - 1...Se2
    - 2.Qe4#
    - 2.Qc5#
  - 1...Sa4
    - 2.Qe4#
  - 1...Se4
    - 2.Qxe4#
  - 1...Sb5
    - 2.Qe4#
    - 2.Qc5#
  - 1...Sd5
    - 2.Qe4#
  - 1...Kf5!
- 1.Qg4?
  - threat
    - 2.d4#
  - 1...Rf4
    - 2.Qxf4#
  - 1...Rg6
    - 2.Qf4#
  - 1...Rh6
    - 2.Qf4#
  - 1...Se4
    - 2.Qxe4#
  - 1...Se2
    - 2.Qe4#
  - 1...Sb5
    - 2.Qe4#
  - 1...Rf5!
Keys
- 1.Qh4!
  - 1...Kf5
    - 2.Qh5#
  - 1...Rf4
    - 2.Qxf4#
  - 1...Se4
    - 2.Qxe4#
  - 1...Rf5
    - 2.d4#
  - 1...Rg6
    - 2.Qf4#
  - 1...Rh6
    - 2.Qf4#
  - 1...Sb1
    - 2.Qe4#
  - 1...Sd1
    - 2.Qe4#
  - 1...Sa2
    - 2.Qe4#
  - 1...Se2
    - 2.Qe4#
  - 1...Sa4
    - 2.Qe4#
  - 1...Sb5
    - 2.Qe4#
  - 1...Sd5
    - 2.Qe4#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 0
Sets
- R(e);N_GUARD::QAB1(D),XR(e)
- R(e);SBLOCK::QAB(D),XS(a)
- R(e);N_GUARD::QAB1(D)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD::QAR1(D),XS(a)
Tries
- Try
  - Q(D);
  - Vars
    - R(e);N_GUARD::QAB1(D),XR(e)
    - R(e);N_GUARD::QAB1(D)
    - R(e);SBLOCK::QAB(D),XS(a)
    - S(a);N_GUARD::QAR1(D)
    - S(a);N_GUARD::QAR1(D),XS(a)
  - Refutation
    - K(c);P-FLIGHT
- Try
  - Q(D);
  - Threat
    - P(B)
  - Vars
    - R(e);N_GUARD::QAB1(D),XR(e)
    - R(e);N_GUARD::QAB1(D)
    - S(a);N_GUARD::QAR1(D),XS(a)
    - S(a);N_GUARD::QAR1(D)
  - Refutation
    - R(e);
Actual
- Q(D);
- Vars
  - K(c);P-FLIGHT::QAR2(D)
  - R(e);N_GUARD::QAB1(D),XR(e)
  - S(a);N_GUARD::QAR1(D),XS(a)
  - R(e);SBLOCK::P(B)
  - R(e);N_GUARD::QAB1(D)
  - S(a);N_GUARD::QAR1(D)

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).