MESON Chess Problem Database

Problem Display
PID: 70881 (2Q3K1/1p6/1rNp4/1p1kN3/2RPR1p1/2npn3/P1BbP1p1/8 w - - 0 1)

Storm, Fredrik

1st Comm., Aftenposten, 1942

2Q3K1/1p6/1rNp4/1p1kN3/2RPR1p1/2npn3/P1BbP1p1/8

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe4
      • 2.Se7#
    • 1...dxe2
      • 2.Sb4#
      • 2.Se7#
  • Tries
    • 1.Sxg4?
      • threat
        • 2.Qe6#
      • 1...Kxc4
        • 2.Bb3#
      • 1...Sxe4
        • 2.Se7#
      • 1...Sxc4
        • 2.Sf6#
      • 1...bxc4
        • 2.Sf6#
      • 1...Kxe4!
    • 1.Qe6+?
      • 1...Kxe4
        • 2.Sxd3#
        • 2.Sg6#
      • 1...Kxe6!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Qe6#
      • 1...Kxc4
        • 2.Bb3#
      • 1...Kxe4
        • 2.Qe6#
      • 1...Sxe4
        • 2.Se7#
      • 1...Sxc4
        • 2.Sdb4#
      • 1...bxc4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK,XR(F)::S(H)
  • Tries
    • Try
      • S(G);XP(f)
      • Threat
        • QAB1(I)
      • Vars
        • K(h);OGATEB,S_FLIGHT,XR(D)::B(B)
        • S(c);SBLOCK,XR(F)::S(H)
        • S(e);SBLOCK,XR(D)::S(G)
        • P(g);SBLOCK,XR(D)::S(G)
      • Refutation
        • K(h);P_SPINP(d),S_FLIGHT,XR(F)
    • Try
      • Q(I);CHECK
      • Refutation
        • K(h);S_FLIGHT,XQ(I)
  • Actual
    • S(G);XP(d)
    • Threat
      • QAB1(I)
    • Vars
      • K(h);OGATEB,S_FLIGHT,XR(D)::B(B)
      • K(h);S_FLIGHT,XR(F)::QAR2(I)
      • S(c);SBLOCK,XR(F)::S(H)
      • S(e);SBLOCK,XR(D)::S(G)
      • P(g);SBLOCK,XR(D)::S(G)
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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).