MESON Chess Problem Database

Problem Display
PID: 21990 (b7/q2rp3/4Q3/rpP1N2K/3k4/3N3R/1P6/3R4 w - - 0 1)

Bonner Feast, Frederick

Birmingham Post, 1923

b7/q2rp3/4Q3/rpP1N2K/3k4/3N3R/1P6/3R4

#2

8 + 7

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sf3#
      • 2.Sc6#
    • 1...Qxc5
      • 2.Sf2#
    • 1...Rd5
      • 2.Qg4#
    • 1...Rb7
      • 2.Sf3#
      • 2.Sc6#
    • 1...Bf3+
      • 2.Sxf3#
    • 1...Bc6
      • 2.Sxc6#
    • 1...b4
      • 2.Qc4#
  • Tries
    • 1.Sc1+?
      • 1...Ke4
        • 2.Sg6#
      • 1...Kxc5!
    • 1.Se1+?
      • 1...Ke4
        • 2.Sg6#
      • 1...Kxc5!
    • 1.Sb4+?
      • 1...Ke4
        • 2.Sg6#
      • 1...Kxc5!
    • 1.Sf4+?
      • 1...Ke4
        • 2.Seg6#
      • 1...Kxc5!
  • Keys
    • 1.c6!
      • threat
        • 2.Sf3#
      • 1...Ke4
        • 2.Sf3#
      • 1...Bxc6
        • 2.Sxc6#
      • 1...Qc5
        • 2.Sf2#
      • 1...Rd5
        • 2.Qg4#
      • 1...b4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(d);P_PINS(F),SBLOCK,XP(E)::R(A)+S(C)
    • R(e);P_PINS(F),SBLOCK,S_CUTB(g)::QAR(H)
    • B(g);CHECK,N_GUARD::S(F),XB(g)
    • B(g);N_GUARD::S(F),XB(g)
    • P(c);N_GUARD::QAR1(H)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(H)+S(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(H)+S(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(H)+S(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(H)+S(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
  • Actual
    • P(E);
    • Threat
      • S(F)
    • Vars
      • K(a);P-FLIGHT::QAR(H)+S(F)
      • B(g);XP(E)::S(F),XB(g)
      • Q(d);P_PINS(F),SBLOCK::R(A)+S(C)
      • R(e);P_PINS(F),SBLOCK::QAR(H)
      • P(c);N_GUARD,P_PINS(F)::QAR1(H)
HTML5 logo

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).