MESON Chess Problem Database

Problem Display
PID: 74403 (bBN4r/2n4p/4p1PQ/5kPR/Rn3P2/8/3rPN1K/8 w - - 0 1)

Saarenheimo, Eero Johannes

Tijdschrift vd KNSB, 1938

bBN4r/2n4p/4p1PQ/5kPR/Rn3P2/8/3rPN1K/8

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Se7#
    • 1...Sc2
      • 2.Se7#
    • 1...Sd3
      • 2.Sd6#
      • 2.Se7#
    • 1...Sbd5
      • 2.Sd6#
    • 1...Sba6
      • 2.Se7#
    • 1...Sb5
      • 2.Se7#
    • 1...Scd5
      • 2.e4#
    • 1...Sca6
      • 2.Se7#
    • 1...Se8
      • 2.Se7#
  • Tries
    • 1.Qf8+?
      • 1...Kxg6
        • 2.Rh6#
      • 1...Rxf8!
    • 1.gxh7?
      • threat
        • 2.Qf6#
      • 1...Kxf4
        • 2.g6#
      • 1...Sbd5
        • 2.Sd6#
      • 1...Scd5
        • 2.e4#
      • 1...Se8
        • 2.Se7#
      • 1...Rf8!
  • Keys
    • 1.g7!
      • threat
        • 2.Qf6#
      • 1...Kxf4
        • 2.g6#
      • 1...Rf8
        • 2.gxf8Q#
        • 2.gxf8R#
      • 1...Sbd5
        • 2.Sd6#
      • 1...Scd5
        • 2.e4#
      • 1...Se8
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • S(b);::S(K)
    • S(b);S_CUTR(a)::S(K)
    • S(e);::S(K)
    • S(e);S_CUTB(g)::P(A)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);S_FLIGHT,XP(H)::R1(G)
      • Refutation
        • R(h);XQ(I)
    • Try
      • P(H);XP(f)
      • Threat
        • QAR1(I)
      • Vars
        • K(c);P-FLIGHT,P_SPINS(b),XP(E)::QAB(I)+P(F)
        • S(b);S_CUTR(a)::S(K)
        • S(e);S_CUTB(g)::P(A)
        • S(e);::S(K)
      • Refutation
        • R(h);
  • Actual
    • P(H);
    • Threat
      • QAR1(I)
    • Vars
      • K(c);P-FLIGHT,P_SPINS(b),XP(E)::QAB(I)+P(F)
      • R(h);OGATE::PXR(h)=Q
      • S(b);S_CUTR(a)::S(K)
      • S(e);S_CUTB(g)::P(A)
      • S(e);::S(K)
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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).