MESON Chess Problem Database

Problem Display
PID: 101446 (6nq/1K2b2p/1p5p/1pP5/1R4p1/k2N4/B5Q1/R2n3r w - - 0 1)

Sparke, Arthur M

Good Companions, 1920

6nq/1K2b2p/1p5p/1pP5/1R4p1/k2N4/B5Q1/R2n3r

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Bb1#
    • 1...Sc3
      • 2.Qb2#
    • 1...Sf6
      • 2.Bb1#
      • 2.Bb3#
      • 2.Bc4#
      • 2.Bd5#
      • 2.Be6#
      • 2.Bf7#
      • 2.Bg8#
  • Tries
    • 1.Qb2+?
      • 1...Sxb2
        • 2.Bb1#
      • 1...Qxb2!
  • Keys
    • 1.Kc8!
      • threat
        • 2.Qa8#
      • 1...Sf6+
        • 2.Bg8#
      • 1...Sb2
        • 2.Bb1#
      • 1...Sc3
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);S_CUTQ(k)::R(A)+B(B)
    • S(a);N_GUARD,S_CUTQ(k)::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);XQ(C)::R(A)+B(B)
      • Refutation
        • Q(k);XQ(C)
  • Actual
    • K(G);S_FLIGHT
    • Threat
      • QAR(C)
    • Vars
      • S(j);CHECK,S_CUTQ(k)::R(A)+B(B)
      • S(a);S_CUTQ(k)::R(A)+B(B)
      • S(a);N_GUARD,S_CUTQ(k)::QAB1(C)
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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).