MESON Chess Problem Database

Problem Display
PID: 136711 (3N2B1/2qPP3/3p3K/2P3B1/r2k4/p2P3R/2P5/4Q1b1 w - - 0 1)

Fellows, Arthur G

The Field, 1921

(First published on Sat Apr 16 1921)

3N2B1/2qPP3/3p3K/2P3B1/r2k4/p2P3R/2P5/4Q1b1

#2

11 + 6

937 Sunday Referee 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Rh4#
    • 1...dxc5
      • 2.Qa1#
      • 2.c3#
    • 1...d5
      • 2.Se6#
  • Tries
    • 1.Sb7?
      • threat
        • 2.Bf6#
        • 2.Rh4#
        • 2.Qa1#
        • 2.c3#
      • 1...Qxc5
        • 2.Rh4#
      • 1...Qxd7
        • 2.Bf6#
        • 2.Qa1#
        • 2.c3#
      • 1...dxc5
        • 2.Qa1#
        • 2.c3#
      • 1...Be3
        • 2.Qa1#
      • 1...Qa5
        • 2.Bf6#
        • 2.Rh4#
      • 1...Qb6
        • 2.Bf6#
        • 2.Rh4#
        • 2.c3#
      • 1...Qc6
        • 2.Bf6#
        • 2.Qa1#
        • 2.c3#
      • 1...Rb4
        • 2.Bf6#
        • 2.Rh4#
        • 2.c3#
      • 1...Rc4
        • 2.Bf6#
        • 2.Rh4#
      • 1...Bf2
        • 2.Bf6#
        • 2.Qa1#
        • 2.c3#
      • 1...Bh2
        • 2.Qa1#
        • 2.c3#
      • 1...d5
        • 2.Qa1#
        • 2.c3#
      • 1...Qxb7!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Bf6#
      • 1...Kxc5
        • 2.Be3#
      • 1...Qxc5
        • 2.Rh4#
      • 1...dxc5
        • 2.Qa1#
      • 1...Be3
        • 2.Bxe3#
      • 1...Bh2
        • 2.Be3#
      • 1...d5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(f);SBLOCK,XP(E)::R(D)
    • P(e);SBLOCK::S(J)
  • Tries
    • Try
      • S(J);
      • Threat
        • DUALS(4)
      • Vars
        • Q(f);XP(E)::R(D)
        • B(a);P_PINB(F)::QAB(A)
      • Refutation
        • Q(f);XS(J)
  • Actual
    • R(D);
    • Threat
      • B(F)
    • Vars
      • K(d);S_FLIGHT,XP(E)::R(D)+B(F),DCHECK
      • Q(f);SBLOCK,XP(E)::R(D)
      • P(e);SBLOCK,XP(E)::QAB(A)
      • B(a);N_GUARD,P_PINB(F)::B(F),XB(a)
      • B(a);N_GUARD::B(F)
      • P(e);SBLOCK::S(J)
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).