MESON Chess Problem Database

Problem Display
PID: 16063 (3Q3R/5N2/4Ppk1/2N4p/8/8/4K3/8 w - - 0 1)

Murarasu, Ion

Probleemblad, 2000

3Q3R/5N2/4Ppk1/2N4p/8/8/4K3/8

#2

6 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kg7
      • 2.Qg8#
    • 1...f5
      • 2.Qg5#
  • Tries
    • 1.Kf3?
      • 1...Kf5
        • 2.Qd3#
      • 1...Kg7
        • 2.Qg8#
      • 1...f5
        • 2.Qg5#
      • 1...h4!
    • 1.Se4?
      • threat
        • 2.Qxf6#
      • 1...Kg7
        • 2.Qxf6#
        • 2.Qg8#
      • 1...f5
        • 2.Qg5#
        • 2.Qf6#
        • 2.Qg8#
      • 1...Kf5!
    • 1.Sd7?
      • threat
        • 2.Qxf6#
      • 1...Kg7
        • 2.Qxf6#
        • 2.Qg8#
      • 1...f5
        • 2.Qg5#
        • 2.Qf6#
        • 2.Qg8#
      • 1...Kf5!
    • 1.Rh6+?
      • 1...Kg7
        • 2.Qh8#
      • 1...Kf5!
    • 1.Qd3+?
      • 1...Kg7
        • 2.Qh7#
        • 2.Qg3#
      • 1...f5!
  • Keys
    • 1.Qd4!
      • 1...Kf5
        • 2.Qe4#
      • 1...Kg7
        • 2.Qg1#
      • 1...h4
        • 2.Qg4#
      • 1...f5
        • 2.Rh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::QAR1(E)
    • P(b);OGATE::QAR1(E)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB(E)
        • K(c);P-FLIGHT::QAR1(E)
        • P(b);OGATE::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • S(B);
      • Threat
        • QAR1(E),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(B);
      • Threat
        • QAR1(E),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • Q(E);
    • Vars
      • K(c);S_FLIGHT::QAB1(E)
      • K(c);P-FLIGHT,P_SPINP(b)::QAR(E)
      • P(a);N_GUARD::QAR2(E)
      • P(b);SBLOCK::R1(F)
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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).