MESON Chess Problem Database

Problem Display
PID: 101374 (1R2B1b1/5nKp/5R2/2B3p1/r1k1P3/p1rN3Q/2p2P2/b1n5 w - - 0 1)

Sparke, Arthur M

Good Companions, 1919

1R2B1b1/5nKp/5R2/2B3p1/r1k1P3/p1rN3Q/2p2P2/b1n5

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Rxb4#
    • 1...Ra5
      • 2.Rb4#
    • 1...Ra6
      • 2.Rb4#
    • 1...Ra7
      • 2.Rb4#
    • 1...Ra8
      • 2.Rb4#
    • 1...Sb3
      • 2.Bb5#
  • Keys
    • 1.Ba7!
      • threat
        • 2.Rc6#
      • 1...Rxd3
        • 2.Qc8#
      • 1...Rxa7
        • 2.Rb4#
      • 1...Sxd3
        • 2.Qe6#
      • 1...Rb3
        • 2.Rc8#
      • 1...Rb4
        • 2.Rxb4#
      • 1...Ra5
        • 2.Rb4#
      • 1...Ra6
        • 2.Rb4#
      • 1...Sb3
        • 2.Bb5#
      • 1...Se5
        • 2.Sxe5#
      • 1...Sd6
        • 2.Se5#
      • 1...Sd8
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD::R1(H),XR(f)
    • R(f);N_GUARD::R1(H)
    • S(b);SBLOCK::B(I)
  • Actual
    • B(E);
    • Threat
      • R(F)
    • Vars
      • R(e);P_PINR(F),SBLOCK,XS(B)::QAR(C)
      • R(f);N_GUARD,XB(E)::R1(H)
      • S(b);SBLOCK,XS(B)::QAB(C)
      • R(e);P_PINR(F),SBLOCK::R(H)
      • R(f);N_GUARD::R1(H),XR(f)
      • R(f);N_GUARD::R1(H)
      • S(b);SBLOCK::B(I)
      • S(i);N_GUARD::S(B),XS(i)
      • S(i);N_GUARD::S(B)
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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).