MESON Chess Problem Database

Problem Display
PID: 60176 (8/1BnRp3/8/P1k2bbR/Pp4rp/1PN5/2N5/K1Q5 w - - 0 1)

Westbury, Eric Ernest

5th Prize, Brisbane Courier, 1931

8/1BnRp3/8/P1k2bbR/Pp4rp/1PN5/2N5/K1Q5

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qe3#
    • 1...Bf4
      • 2.Se4#
    • 1...Sb5
      • 2.Rd5#
    • 1...Sd5
      • 2.Rxd5#
    • 1...Sa6
      • 2.Rd5#
    • 1...Se6
      • 2.Rd5#
    • 1...Sa8
      • 2.Rd5#
    • 1...Se8
      • 2.Rd5#
  • Tries
    • 1.Se4+?
      • 1...Bxe4
        • 2.Qe3#
      • 1...Rxe4!
    • 1.Qe3+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Bxe3!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Rxc7#
      • 1...Bf6+
        • 2.Scd4#
      • 1...Bxd7
        • 2.Scd4#
      • 1...Sxb5
        • 2.Rd5#
      • 1...Be4
        • 2.Qe3#
      • 1...Bf4
        • 2.Se3#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sa6
        • 2.Rd5#
      • 1...Se6
        • 2.Rd5#
      • 1...Sa8
        • 2.Rd5#
      • 1...Se8
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);P_SPINB(f),S_CUTR(b)::QAB(B)
    • B(f);P_SPINB(e),S_CUTR(b)::S(E)
    • S(g);N_GUARD::R1(J)
    • S(g);N_GUARD::R1(J),XS(g)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • B(e);P_SPINB(f),XS(E)::QAB(B)
      • Refutation
        • R(b);XS(E)
    • Try
      • Q(B);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(B),XR(b)
      • Refutation
        • B(f);P_SPINB(e),XQ(B)
  • Actual
    • S(E);
    • Threat
      • R(J),XS(g)
    • Vars
      • B(f);CHECK,N_GUARD,P_SPINB(e)::QAR(B)+S(C)
      • B(e);N_GUARD,P_SPINB(f),XR(J)::QAR(B)+S(C)
      • S(g);N_GUARD,XS(E)::R1(J)
      • B(e);P_SPINB(f),S_CUTR(b)::QAB(B)
      • B(f);P_SPINB(e),S_CUTR(b)::QAR(B)+S(C)
      • S(g);N_GUARD::R1(J),XS(g)
      • S(g);N_GUARD::R1(J)
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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).