MESON Chess Problem Database

Problem Display
PID: 44845 (3B4/2N5/NRqk1n2/4p3/2br2B1/5p2/5p2/1R1Q2bK w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

Recomm., BCF 043. Ty., 1942-1943

3B4/2N5/NRqk1n2/4p3/2br2B1/5p2/5p2/1R1Q2bK

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb6
      • 2.Rxb6#
    • 1...Bd5
      • 2.Sb5#
    • 1...Sd5
      • 2.Se8#
  • Tries
    • 1.Qxd4+?
      • 1...Bd5
        • 2.Sb5#
        • 2.Qc5#
        • 2.Qb4#
      • 1...Sd5
        • 2.Se8#
        • 2.Qc5#
      • 1...exd4!
  • Keys
    • 1.Qxf3!
      • threat
        • 2.Rxc6#
        • 2.Qxc6#
      • 1...Qxb6
        • 2.Rxb6#
      • 1...Rxg4
        • 2.Qxc6#
      • 1...Sxg4
        • 2.Qxc6#
      • 1...Be6
        • 2.Qxc6#
      • 1...e4
        • 2.Qg3#
        • 2.Qf4#
      • 1...Re4
        • 2.Qa3#
      • 1...Rd5
        • 2.Qxf6#
      • 1...Bb5
        • 2.Sxb5#
      • 1...Bd5
        • 2.Sb5#
      • 1...Se4
        • 2.Qf8#
      • 1...Sd5
        • 2.Se8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_SPINQ(g),OGATE,XR(F)::R(A),XQ(g)
    • B(d);N_GUARD,N_SPINR(e),SBLOCK::S(G)
    • S(i);N_GUARD,N_SPINR(e),SBLOCK::S(G)
  • Tries
    • Try
      • Q(B);CHECK,XR(e)
      • Refutation
        • P(f);XQ(B)
  • Actual
    • Q(B);N_PINR(e),P_SPINQ(B),XP(c)
    • Threat
      • DUALS(2)
    • Vars
      • Q(g);N_PINQ(B),N_SPINQ(g),OGATE,XR(F)::R(A),XQ(g)
      • R(e);XB(D)::QAR1(B),XQ(g)
      • S(i);XB(D)::QAR1(B),XQ(g)
      • B(d);::QAR1(B),XQ(g)
      • R(e);N_PINQ(B)::QAB(B)
      • R(e);N_PINQ(B)::QAR2(B),XS(i)
      • B(d);N_GUARD::S(G),XB(d)
      • B(d);N_GUARD::S(G)
      • S(i);N_PINQ(B)::QAB(B)
      • S(i);N_GUARD,N_PINQ(B)::S(G)
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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).