MESON Chess Problem Database

Problem Display
PID: 6085 (2n1n1B1/pK1P1rP1/4kN1R/3RP1B1/rb4P1/8/4Q3/8 w - - 0 1)

ten Cate, Pieter

Western Morning News, 1926

2n1n1B1/pK1P1rP1/4kN1R/3RP1B1/rb4P1/8/4Q3/8

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ke7
      • 2.dxe8Q#
      • 2.dxe8R#
    • 1...Be7
      • 2.dxc8Q#
      • 2.dxc8B#
    • 1...Scd6+
      • 2.exd6#
    • 1...Se7
      • 2.d8S#
    • 1...Sed6+
      • 2.exd6#
  • Tries
    • 1.Bxf7+?
      • 1...Ke7
        • 2.dxe8Q#
      • 1...Kxf7!
    • 1.Rd3?
      • threat
        • 2.Sxe8#
      • 1...Scd6+
        • 2.exd6#
      • 1...Sed6+
        • 2.exd6#
      • 1...Ke7
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Sxf6
        • 2.exf6#
      • 1...Sxg7
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
      • 1...Be7
        • 2.dxc8Q#
        • 2.dxc8B#
      • 1...Se7
        • 2.d8S#
      • 1...Sc7
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
      • 1...Bd6!
    • 1.Qe4?
      • threat
        • 2.Sxe8#
      • 1...Scd6+
        • 2.exd6#
      • 1...Sed6+
        • 2.exd6#
      • 1...Ke7
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Sxf6
        • 2.exf6#
      • 1...Sxg7
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
      • 1...Be7
        • 2.Qf5#
        • 2.dxc8Q#
        • 2.dxc8B#
      • 1...Se7
        • 2.d8S#
      • 1...Sc7
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
      • 1...Bd6!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Sxe8#
      • 1...Scd6+
        • 2.exd6#
      • 1...Sed6+
        • 2.exd6#
      • 1...Ke7
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Sxf6
        • 2.exf6#
      • 1...Sxg7
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#
      • 1...Bd6
        • 2.exd6#
      • 1...Be7
        • 2.dxc8Q#
        • 2.dxc8B#
      • 1...Se7
        • 2.d8S#
      • 1...Sc7
        • 2.Sh5#
        • 2.Sh7#
        • 2.Se8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_PINP(I),N_SPINR(e),P-FLIGHT::PXS(g)=Q
    • B(b);N_PINP(I),SBLOCK::PXS(f)=Q
    • S(f);CHECK,OGATE::QAR(A)+P(D),XS(f)
    • S(f);N_PINP(I),SBLOCK::P=S
    • S(g);CHECK,OGATE::QAR(A)+P(D),XS(g)
  • Tries
    • Try
      • B(K);CHECK,N_SPINP(I),XR(e)
      • Vars
        • K(c);P-FLIGHT::PXS(g)=Q
      • Refutation
        • K(c);S_FLIGHT,XB(K)
    • Try
      • R(C);
      • Threat
        • R(G)+S(F),XS(g)
      • Vars
        • S(f);CHECK,OGATE::QAR(A)+P(D),XS(f)
        • S(g);CHECK,OGATE::QAR(A)+P(D),XS(g)
        • K(c);N_PINP(I),N_SPINR(e),P-FLIGHT::PXS(g)=Q
        • S(g);OGATE,P_SPINS(g),XS(F)::QAR(A)+P(D),XS(g)
        • B(b);N_PINP(I),SBLOCK::PXS(f)=Q
        • S(f);N_PINP(I),SBLOCK::P=S
      • Refutation
        • B(b);
    • Try
      • Q(A);
      • Threat
        • R(G)+S(F),XS(g)
      • Vars
        • S(f);CHECK,OGATE::QAR(A)+P(D),XS(f)
        • S(g);CHECK,OGATE::QAR(A)+P(D),XS(g)
        • K(c);N_PINP(I),N_SPINR(e),P-FLIGHT::PXS(g)=Q
        • S(g);OGATE,P_SPINS(g),XS(F)::QAR(A)+P(D),XS(g)
        • S(f);N_PINP(I),SBLOCK::P=S
      • Refutation
        • B(b);
  • Actual
    • R(C);
    • Threat
      • R(G)+S(F),XS(g)
    • Vars
      • S(f);CHECK,OGATE::QAR(A)+P(D),XS(f)
      • S(g);CHECK,OGATE::QAR(A)+P(D),XS(g)
      • K(c);N_PINP(I),N_SPINR(e),P-FLIGHT::PXS(g)=Q
      • S(g);OGATE,P_SPINS(g),XS(F)::QAR(A)+P(D),XS(g)
      • B(b);OGATE::QAR(A)+P(D),XB(b)
      • B(b);N_PINP(I),SBLOCK::PXS(f)=Q
      • S(f);N_PINP(I),SBLOCK::P=S
HTML5 logo

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).