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Problem Display

PID: 87665 (1K2N1Bn/Q4p2/2P3p1/3Pk1p1/4P1P1/3P1n1N/8/8 w - - 0 1)

Mladenovic, Slobodan

The Problemist, 1972

1K2N1Bn/Q4p2/2P3p1/3Pk1p1/4P1P1/3P1n1N/8/8

#2

10 + 6

6490	yacpdb	2009

SOLUTION

SOUND
Sets
- 1...Se1
  - 2.Qa1#
- 1...Sg1
  - 2.Qa1#
- 1...Sd2
  - 2.Qa1#
- 1...Sh2
  - 2.Qa1#
- 1...Sd4
  - 2.Qc7#
- 1...Sh4
  - 2.Qa1#
- 1...f5
  - 2.Qg7#
Tries
- 1.Ka8?
  - 1...f5
    - 2.Qg7#
  - 1...Se1
    - 2.Qa1#
  - 1...Sg1
    - 2.Qa1#
  - 1...Sd2
    - 2.Qa1#
  - 1...Sh2
    - 2.Qa1#
  - 1...Sd4
    - 2.Qb8#
    - 2.Qc7#
  - 1...Sh4
    - 2.Qa1#
  - 1...f6!
- 1.Kc8?
  - 1...f5
    - 2.Qg7#
  - 1...Se1
    - 2.Qa1#
  - 1...Sg1
    - 2.Qa1#
  - 1...Sd2
    - 2.Qa1#
  - 1...Sh2
    - 2.Qa1#
  - 1...Sd4
    - 2.Qb8#
    - 2.Qc7#
  - 1...Sh4
    - 2.Qa1#
  - 1...f6!
- 1.Bxf7?
  - 1...Se1
    - 2.Qa1#
  - 1...Sg1
    - 2.Qa1#
  - 1...Sd2
    - 2.Qa1#
  - 1...Sh2
    - 2.Qa1#
  - 1...Sd4
    - 2.Qc7#
  - 1...Sh4
    - 2.Qa1#
  - 1...Sxf7!
- 1.Bh7?
  - 1...Se1
    - 2.Qa1#
  - 1...Sg1
    - 2.Qa1#
  - 1...Sd2
    - 2.Qa1#
  - 1...Sh2
    - 2.Qa1#
  - 1...Sd4
    - 2.Qc7#
  - 1...Sh4
    - 2.Qa1#
  - 1...f5
    - 2.Qg7#
  - 1...f6!
- 1.Qe3?
  - 1...Se1
    - 2.d4#
  - 1...Sg1
    - 2.d4#
  - 1...Sd2
    - 2.d4#
  - 1...Sh2
    - 2.d4#
  - 1...Sd4
    - 2.Qg3#
  - 1...Sh4
    - 2.d4#
  - 1...f5
    - 2.exf5#
  - 1...f6!
Keys
- 1.Qc5!
  - 1...f6
    - 2.d6#
  - 1...Se1
    - 2.Qc3#
  - 1...Sg1
    - 2.Qc3#
  - 1...Sd2
    - 2.Qc3#
  - 1...Sh2
    - 2.Qc3#
  - 1...Sd4
    - 2.Qd6#
  - 1...Sh4
    - 2.Qc3#
  - 1...f5
    - 2.d6#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 7
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- S(a);N_GUARD::QAB(G)
- S(a);SBLOCK::QAB(G)
- P(e);OGATE::QAB(G)
Tries
- Try
  - K(H);P-FLIGHT
  - Vars
    - P(e);OGATE::QAB(G)
    - S(a);N_GUARD::QAB(G)
  - Refutation
    - P(e);
- Try
  - K(H);P-FLIGHT
  - Vars
    - P(e);OGATE::QAB(G)
    - S(a);N_GUARD::QAB(G)
  - Refutation
    - P(e);
- Try
  - B(J);XP(e)
  - Vars
    - S(a);N_GUARD::QAB(G)
    - S(a);SBLOCK::QAB(G)
  - Refutation
    - S(f);XB(J)
- Try
  - B(J);
  - Vars
    - S(a);N_GUARD::QAB(G)
    - S(a);SBLOCK::QAB(G)
    - P(e);OGATE::QAB(G)
  - Refutation
    - P(e);
- Try
  - Q(G);
  - Vars
    - S(a);N_GUARD::P(A)
    - S(a);OGATE,SBLOCK::QAB(G)
    - P(e);OGATE::QAR(G)+P(C),XP(e)
  - Refutation
    - P(e);
Actual
- Q(G);
- Vars
  - P(e);::QAR(G)+P(E)
  - S(a);N_GUARD::QAB(G)
  - S(a);SBLOCK::QAB1(G)

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).