MESON Chess Problem Database

Problem Display
PID: 240254 (2rR1qnr/5pP1/N1n1kPp1/2b1N1R1/KpP5/5Q2/8/8 w - - 0 1)

Hermanson, Halvar

Tijdschrift vd KNSB, 1948

2rR1qnr/5pP1/N1n1kPp1/2b1N1R1/KpP5/5Q2/8/8

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg7
      • 2.Sxc5#
    • 1...Qe8
      • 2.Sxc5#
    • 1...Rc7
      • 2.Sxc7#
    • 1...Rb8
      • 2.Sc7#
    • 1...Bg1
      • 2.gxf8S#
    • 1...Bf2
      • 2.gxf8S#
    • 1...Be3
      • 2.gxf8S#
    • 1...Bd4
      • 2.gxf8S#
    • 1...Bb6
      • 2.gxf8S#
    • 1...Ba7
      • 2.gxf8S#
    • 1...Sce7
      • 2.gxf8S#
    • 1...Sge7
      • 2.Sxc5#
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qd5#
      • 1...Kd6
        • 2.Qd5#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Qd6
        • 2.Qg4#
      • 1...Sce7
        • 2.Sxf8#
      • 1...Sge7
        • 2.Sdxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • Q(h);N_GUARD,XP(H)::S(F),XB(b)
    • Q(h);N_GUARD::S(F),XB(b)
    • R(g);N_GUARD::S(F),XR(g)
    • R(g);N_GUARD::S(F)
    • B(b);N_GUARD::PXQ(h)=S
    • S(c);S_CUTB(b)::PXQ(h)=S
    • S(i);S_CUTQ(h)::S(F),XB(b)
  • Actual
    • S(D);
    • Threat
      • QAB1(A)
    • Vars
      • K(d);P-FLIGHT::QAR1(A)
      • S(i);OGATE,XP(G)::QAR1(A),XS(i)
      • Q(h);SBLOCK::QAB(A)
      • S(c);S_CUTB(b)::S(D),XQ(h)
      • S(i);S_CUTQ(h)::S(D),XB(b)
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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).