MESON Chess Problem Database

Problem Display
PID: 277886 (5Br1/5NqN/3nPPk1/1p3R2/5pP1/2QKpp2/8/1B6 w - - 0 1)

Lacny, Ludovit

Pat a Mat, 2014

5Br1/5NqN/3nPPk1/1p3R2/5pP1/2QKpp2/8/1B6

#2

10 + 8

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh7
      • 2.Se5#
      • 2.Rg5#
  • Tries
    • 1.Kd4?
      • threat
        • 2.Rg5#
      • 1...Qxf6+
        • 2.Rxf6#
      • 1...Sxf5+
        • 2.Bxf5#
      • 1...Kxh7
        • 2.Rh5#
      • 1...Qxh7
        • 2.Se5#
      • 1...Sxf7
        • 2.Rh5#
      • 1...Se4!
    • 1.Se5+?
      • 1...Kh6
        • 2.Rh5#
      • 1...Kxh7!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Se5#
      • 1...Qxf6
        • 2.Rh6#
        • 2.Qxf6#
      • 1...Qxf7
        • 2.Rh6#
      • 1...Qxh7
        • 2.Rg5#
      • 1...Sxf7
        • 2.Kd4#
      • 1...Qh6
        • 2.Rxh6#
      • 1...Sc4
        • 2.Kd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);P-FLIGHT,P_SPINP(G)
      • Threat
        • B(A)+R(E),DCHECK
      • Vars
        • Q(g);CHECK,OGATE,XP(G)::B(A)+R(E),DCHECK,XQ(g)
        • S(e);CHECK,OGATE,P_SPINS(e),XR(E)::B(A),XS(e)
        • K(f);S_FLIGHT,XS(I)::B(A)+R(E),DCHECK
        • Q(g);N_PINP(G),SBLOCK,XS(I)::S(H)
        • S(e);N_GUARD,XS(H)::B(A)+R(E)
      • Refutation
        • S(e);
    • Try
      • S(H);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINQ(g)::R1(E)
      • Refutation
        • K(f);S_FLIGHT,XS(I)
  • Actual
    • R(E);
    • Threat
      • S(H)
    • Vars
      • Q(g);N_GUARD,XS(H)::R1(E)
      • Q(g);SBLOCK,XS(I)::R1(E)
      • S(e);N_GUARD,XS(H)::B(A)+K(C)
      • Q(g);N_GUARD::R1(E),XQ(g)
      • S(e);N_GUARD::B(A)+K(C)
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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).