MESON Chess Problem Database

Problem Display
PID: 205772 (1R2Q1b1/B7/5r2/2n2n1B/3rN3/4k2N/3R3K/8 w - - 0 1)

Eddy, Edwin John

Morning Post, 1925

1R2Q1b1/B7/5r2/2n2n1B/3rN3/4k2N/3R3K/8

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Re2#
  • Tries
    • 1.Sef2+?
      • 1...Re4
        • 2.Rd3#
      • 1...Re6
        • 2.Re2#
      • 1...Be6
        • 2.Re2#
      • 1...Se4
        • 2.Re2#
        • 2.Rd3#
      • 1...Se6
        • 2.Re2#
        • 2.Rd3#
      • 1...Se7
        • 2.Re2#
      • 1...Kxd2!
    • 1.Sxc5+?
      • 1...Re4
        • 2.Rd3#
      • 1...Re6
        • 2.Re2#
      • 1...Be6
        • 2.Re2#
      • 1...Se7
        • 2.Re2#
      • 1...Kxd2!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qf4#
      • 1...Rxd2+
        • 2.Sef2#
      • 1...Rxe4
        • 2.Qc3#
      • 1...Rd3
        • 2.Re2#
      • 1...Sd3
        • 2.Re2#
      • 1...Se6
        • 2.Rb3#
      • 1...Sg3
        • 2.Qxd4#
      • 1...Sh4
        • 2.Qxd4#
      • 1...Sd6
        • 2.Qxd4#
      • 1...Sh6
        • 2.Qxd4#
      • 1...Se7
        • 2.Qxd4#
      • 1...Sg7
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • S(c);P_SPINR(b),SBLOCK::R1(A)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • R(b);P_SPINR(b),P_SPINS(c)::R1(A)
        • R(e);P_SPINR(e)::R1(A)
        • B(f);P_SPINB(f)::R1(A)
        • S(d);P_SPINS(d)::R1(A)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • S(D);CHECK,XS(c)
      • Vars
        • R(b);P_SPINR(b)::R1(A)
        • R(e);P_SPINR(e)::R1(A)
        • B(f);P_SPINB(f)::R1(A)
        • S(d);P_SPINS(d)::R1(A)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • R(b);CHECK,N_GUARD,P_SPINS(c),SBLOCK,XR(A)::QAR(H)+S(D)
      • R(b);OGATE,P_SPINR(b),P_SPINS(c),SBLOCK,XS(D)::QAR2(H)
      • R(b);P_SPINS(c),SBLOCK::R1(A)
      • S(c);P_SPINR(b),SBLOCK::R1(A)
      • S(c);N_GUARD,P_SPINR(b),S_CUTB(f)::R(G)
      • S(d);N_GUARD::QAB1(H),XR(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).