MESON Chess Problem Database

Problem Display
PID: 150067 (B1K5/B7/4p1P1/3p3b/2Q5/1R2NkP1/4Nr1b/8 w - - 0 1)

Sparke, Arthur M

British Chess Magazine, 1921

B1K5/B7/4p1P1/3p3b/2Q5/1R2NkP1/4Nr1b/8

#2

9 + 6

14868 Pirnie Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Qf4#
    • 1...Rg2
      • 2.Sd1#
      • 2.Sf1#
      • 2.Sc2#
      • 2.Sg4#
      • 2.Sxd5#
      • 2.Sf5#
    • 1...Bxg3
      • 2.Sg1#
    • 1...Bg4
      • 2.Qxg4#
    • 1...Bxg6
      • 2.Qg4#
  • Tries
    • 1.Rb2?
      • threat
        • 2.Qf4#
      • 1...Bxg3
        • 2.Sg1#
      • 1...e5!
    • 1.Qxd5+?
      • 1...Kxe2
        • 2.Qd1#
      • 1...exd5!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Rf7#
      • 1...Rxe2
        • 2.Qf4#
      • 1...Bxg3
        • 2.Sg1#
      • 1...Bxg6
        • 2.Qg4#
      • 1...dxc4
        • 2.Rb2#
      • 1...d4
        • 2.Rb3#
      • 1...Bg4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK,XS(A)::QAR1(E)
    • B(b);N_GUARD,SBLOCK,XP(D)::S(A)
    • B(e);N_GUARD::QAB1(E),XB(e)
    • B(e);N_GUARD,XP(F)::QAB1(E)
  • Tries
    • Try
      • R(B);
      • Threat
        • QAR1(E)
      • Vars
        • B(b);N_GUARD,SBLOCK,XP(D)::S(A)
      • Refutation
        • P(f);
    • Try
      • Q(E);CHECK,XP(d)
      • Vars
        • K(c);S_FLIGHT,XS(A)::QAB1(E)
      • Refutation
        • P(f);P_SPINP(f),XQ(E)
  • Actual
    • R(B);N_PINP(d)
    • Threat
      • R(B)
    • Vars
      • R(a);SBLOCK,XS(A)::QAR1(E)
      • B(b);N_GUARD,SBLOCK,XP(D)::S(A)
      • B(e);N_GUARD,XP(F)::QAB1(E)
      • P(d);OGATEB,XQ(E)::B(H)+R(B)
      • P(d);OGATEB::B(H)+R(B)
      • B(e);N_GUARD::QAB1(E),XB(e)
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).