Problem Display
PID: 243673 (8/8/pP1k1p2/P2NNB2/pPK3P1/8/6P1/Q7 w - - 0 1)

Burda, Josef

Solarczyk, Rudolf

Hlas l'udu, 1971

8/8/pP1k1p2/P2NNB2/pPK3P1/8/6P1/Q7

#2

10 + 4


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Tries
    • 1.Qd4?
      • 1...fxe5
        • 2.Qc5#
      • 1...a3!
    • 1.Qc1?
      • 1...Kxe5
        • 2.Qf4#
      • 1...fxe5
        • 2.Qh6#
      • 1...a3!
    • 1.Qg1?
      • 1...Kxe5
        • 2.Qh2#
      • 1...fxe5
        • 2.Qc5#
      • 1...a3!
    • 1.Qh1?
      • 1...Kxe5
        • 2.Qh2#
      • 1...fxe5
        • 2.Qh6#
      • 1...a3!
    • 1.Qxa4?
      • threat
        • 2.Sf7#
      • 1...fxe5
        • 2.Qd7#
      • 1...Kxe5!
    • 1.b5?
      • threat
        • 2.Sf7#
      • 1...fxe5
        • 2.Qa3#
      • 1...axb5+!
    • 1.b7?
      • threat
        • 2.b8Q#
        • 2.b8B#
      • 1...a3
        • 2.b8Q#
        • 2.b8B#
      • 1...fxe5!
  • Keys
    • 1.Qa3!
      • 1...Kxe5
        • 2.Qg3#
      • 1...fxe5
        • 2.b5#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • P(d);SBLOCK,XS(H)::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(H)::QAB1(A)
        • P(d);OGATEB,SBLOCK,XS(H)::QAR(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(H)::QAB(A)
        • P(d);SBLOCK,XS(H)::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(H)::QAB(A)
        • P(d);OGATEB,SBLOCK,XS(H)::QAR(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);XP(a)
      • Threat
        • S(H)
      • Vars
        • P(d);SBLOCK,XS(H)::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT,XS(H)
    • Try
      • P(C);
      • Threat
        • S(H)
      • Vars
        • P(d);SBLOCK,XS(H)::QAB(A)
      • Refutation
        • P(b);CHECK,XP(C)
    • Try
      • P(J);
      • Threat
        • P=Q
      • Vars
        • P(a);::P=Q
      • Refutation
        • P(d);XS(H)
  • Actual
    • Q(A);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(H)::QAB(A)
      • P(d);SBLOCK,XS(H)::QAB(A)+P(C)


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).