MESON Chess Problem Database

Problem Display
PID: 110502 (8/1K6/1nB5/8/1k1B4/8/Q7/3n4 w - - 0 1)

Rago, Istvan Stefano

Dunaujvarosi Hirlap, 1955-1956

8/1K6/1nB5/8/1k1B4/8/Q7/3n4

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Qxa4#
    • 1...Sc4
      • 2.Qa4#
    • 1...Sd5
      • 2.Qa4#
    • 1...Sd7
      • 2.Qa4#
    • 1...Sa8
      • 2.Qa4#
    • 1...Sc8
      • 2.Qa4#
  • Tries
    • 1.Kxb6?
      • threat
        • 2.Qa4#
      • 1...Sc3
        • 2.Bc5#
      • 1...Sb2!
    • 1.Qb3+?
      • 1...Ka5
        • 2.Bxb6#
        • 2.Qb5#
        • 2.Qxb6#
      • 1...Kxb3!
  • Keys
    • 1.Qc2!
      • 1...Ka3
        • 2.Bc5#
      • 1...Ka5
        • 2.Qc5#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb2
        • 2.Qc3#
      • 1...Sf2
        • 2.Qc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sa4
        • 2.Qxa4#
      • 1...Sc4
        • 2.Qa4#
      • 1...Sd5
        • 2.Qa4#
      • 1...Sd7
        • 2.Qa4#
      • 1...Sa8
        • 2.Qa4#
      • 1...Sc8
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAR1(A),XS(c)
    • S(c);N_GUARD,SBLOCK::QAR1(A)
    • S(c);N_GUARD::QAR1(A)
  • Tries
    • Try
      • K(D);P-FLIGHT,XS(c)
      • Threat
        • QAR1(A)
      • Vars
        • S(a);SBLOCK::B(B)
      • Refutation
        • S(a);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::B(B)
      • K(b);S_FLIGHT::QAR2(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(a);N_GUARD::QAB1(A)
      • S(c);N_GUARD::QAR1(A),XS(c)
      • S(c);N_GUARD,SBLOCK::QAR1(A)
      • S(c);N_GUARD::QAR1(A)
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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).