MESON Chess Problem Database

Problem Display
PID: 45397 (1rN1R1b1/1q1p4/2pp4/2PkN3/1p4R1/nn2B2K/B6P/2r5 w - - 0 1)

Eddy, Edwin John

Recomm., BCF 048. Ty., 1944-1945

1rN1R1b1/1q1p4/2pp4/2PkN3/1p4R1/nn2B2K/B6P/2r5

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Rd4#
    • 1...Sc2
      • 2.Bxb3#
  • Tries
    • 1.Sxd7?
      • threat
        • 2.Sf6#
        • 2.Rd4#
      • 1...dxc5
        • 2.Sf6#
        • 2.Re5#
      • 1...Rd1
        • 2.Sf6#
      • 1...Rf1
        • 2.Rd4#
      • 1...Rc4
        • 2.Sf6#
        • 2.Rg5#
      • 1...Be6
        • 2.Se7#
      • 1...Sc2
        • 2.Sf6#
        • 2.Bxb3#
      • 1...Sc4
        • 2.Sf6#
      • 1...Sb5
        • 2.Sf6#
      • 1...Qxd7!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Rd4#
      • 1...dxc5
        • 2.Re5#
      • 1...Rc4
        • 2.Rg5#
      • 1...Be6
        • 2.Se7#
      • 1...Sc2
        • 2.Bxb3#
      • 1...Sc4
        • 2.Sf4#
      • 1...Sb5
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK,XP(F)::R1(E)
    • S(b);N_GUARD,S_CUTR(a)::B(A),XS(c)
  • Tries
    • Try
      • S(G);XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::S(G)
        • R(a);::R1(E)
        • B(k);P_PINR(E),SBLOCK::S(H)
        • S(b);N_SPINS(c)::S(G)
        • S(b);::S(G)
      • Refutation
        • Q(h);P_PINR(E),XS(G)
  • Actual
    • S(G);
    • Threat
      • R1(E)
    • Vars
      • P(g);N_GUARD,XP(F)::R1(I)
      • R(a);N_SPINS(c),SBLOCK::R(E)
      • B(k);P_PINR(E),SBLOCK::S(H)
      • S(b);N_GUARD,S_CUTR(a)::B(A),XS(c)
      • S(b);N_SPINS(c),SBLOCK::S(G)
      • S(b);S_CUTQ(h)::S(G),XP(d)
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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).