MESON Chess Problem Database

Problem Display
PID: 16798 (7B/2r1r3/Q7/1p1k1P2/N2b2NR/3P4/1p3PK1/2R5 w - - 0 1)

Ling, John Francis

Evening News, 1943

7B/2r1r3/Q7/1p1k1P2/N2b2NR/3P4/1p3PK1/2R5

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qxc6#
    • 1...Ra7
      • 2.Qc6#
    • 1...Rb7
      • 2.Qc6#
    • 1...Rcd7
      • 2.Qc6#
    • 1...Re5
      • 2.Sf6#
    • 1...Re6
      • 2.Qxe6#
    • 1...Red7
      • 2.Qe6#
    • 1...Rf7
      • 2.Qe6#
    • 1...Rg7
      • 2.Qe6#
    • 1...Rh7
      • 2.Qe6#
    • 1...Bc5
      • 2.Sc3#
    • 1...Be5
      • 2.Se3#
  • Tries
    • 1.Se3+?
      • 1...Rxe3
        • 2.Rxd4#
      • 1...Bxe3!
    • 1.Rc5+?
      • 1...Bxc5
        • 2.Sc3#
      • 1...Rxc5!
  • Keys
    • 1.Be5!
      • threat
        • 2.Qd6#
      • 1...Rxe5
        • 2.Sf6#
      • 1...Bxe5
        • 2.Se3#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Rcd7
        • 2.Qc6#
      • 1...Re6
        • 2.Qxe6#
      • 1...Red7
        • 2.Qe6#
      • 1...Bc5
        • 2.Sc3#
      • 1...Bb6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(e);N_GUARD::QAB1(I),XR(e)
    • R(e);N_GUARD::QAB1(I)
    • R(f);SBLOCK,S_CUTB(b)::S(F)
    • R(f);N_GUARD::QAB1(I),XR(f)
    • R(f);N_GUARD::QAB1(I)
    • R(f);N_GUARD,P_PINS(F)::QAB1(I)
    • B(b);N_GUARD,SBLOCK,S_CUTR(e)::S(E)
    • B(b);N_GUARD,S_CUTR(f)::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(f);XS(F)::R1(G),XB(b)
      • Refutation
        • B(b);XS(F)
    • Try
      • R(A);CHECK
      • Vars
        • B(b);SBLOCK,XR(A)::S(E)
      • Refutation
        • R(e);XR(A)
  • Actual
    • B(J);
    • Threat
      • QAR1(I)
    • Vars
      • R(f);SBLOCK,XB(J)::S(F)
      • B(b);N_GUARD,SBLOCK,XB(J)::S(F)
      • R(e);N_GUARD::QAB1(I),XR(e)
      • R(e);N_GUARD::QAB1(I)
      • R(f);N_GUARD::QAB1(I),XR(f)
      • R(f);N_GUARD::QAB1(I)
      • B(b);N_GUARD,SBLOCK,S_CUTR(e)::S(E)
      • B(b);N_GUARD::S(E),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).