MESON Chess Problem Database

Problem Display
PID: 44078 (3B4/8/p7/Rq3kN1/3P1Np1/n2R2P1/3nK3/1B6 w - - 0 1)

Eddy, Edwin John

Het Schaakleven, 1931

3B4/8/p7/Rq3kN1/3P1Np1/n2R2P1/3nK3/1B6

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Rxc5#
    • 1...Qd5
      • 2.Rxd5#
    • 1...Qe5+
      • 2.Rxe5#
    • 1...Sdc4
      • 2.Rdxa3#
    • 1...Sac4
      • 2.Rxd2#
  • Tries
    • 1.Rxb5+?
      • 1...Sxb5
        • 2.Rxd2#
      • 1...axb5!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sd6#
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Ke4
        • 2.Sd6#
      • 1...Sdc4
        • 2.Rdxa3#
      • 1...Se4
        • 2.Sh6#
      • 1...Sac4
        • 2.Rxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(d);N_PINR(C),OGATE::R(G),XQ(d)
    • Q(d);CHECK,N_PINR(C),OGATE::R1(G),XQ(d)
    • S(a);N_PINR(C)::B(A)+R(C),XS(b)
    • S(b);N_PINR(C)::B(A)+R(C),XS(a)
  • Tries
    • Try
      • R(G);CHECK,N_SPINR(C),XQ(d)
      • Vars
        • S(b);XR(G)::B(A)+R(C),XS(a)
      • Refutation
        • P(f);XR(G)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • Q(d);CHECK,N_PINR(C),OGATE::R1(G),XQ(d)
      • K(e);N_SPINQ(d),S_FLIGHT::S(H)
      • S(a);N_PINR(C)::B(A)+R(C),XS(b)
      • S(a);SBLOCK::S(H)
      • S(b);N_PINR(C)::B(A)+R(C),XS(a)
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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).