MESON Chess Problem Database

Problem Display
PID: 219116 (q5b1/2B3Qn/r1p2p2/r3pB1p/p2N1k2/2R2N1p/7p/2b3nK w - - 0 1)

Sparke, Arthur M

British Chess Magazine, 1923

q5b1/2B3Qn/r1p2p2/r3pB1p/p2N1k2/2R2N1p/7p/2b3nK

#2

7 + 15

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf3
      • 2.Rxf3#
    • 1...h4
      • 2.Qg4#
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Qg3#
      • 1...Bd5+
        • 2.Sef3#
      • 1...c5+
        • 2.Sec6#
      • 1...Be3
        • 2.Sd3#
      • 1...Se2
        • 2.Rf3#
      • 1...Sf3
        • 2.Rxf3#
      • 1...Sg5
        • 2.Sg6#
      • 1...h4
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE,XS(C)::R1(B),XS(b)
    • P(i);N_GUARD::QAR1(G)
  • Actual
    • S(C);XP(h)
    • Threat
      • QAB1(G)
    • Vars
      • B(o);CHECK,S_CUTR(g)::B(F)+S(C)
      • P(k);CHECK,S_CUTR(g)::B(F)+S(C)
      • B(a);SBLOCK::B(F)+S(C),DCHECK
      • S(b);N_GUARD::R1(B)
      • S(b);N_GUARD::R1(B),XS(b)
      • S(m);SBLOCK::B(F)+S(C),DCHECK
      • P(i);N_GUARD::QAR1(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).