MESON Chess Problem Database

Problem Display
PID: 62902 (2bK1k1N/3n1PN1/2BP3P/5p2/6p1/B7/4q2b/8 w - - 0 1)

Jarman, CP

Chess, 1944

2bK1k1N/3n1PN1/2BP3P/5p2/6p1/B7/4q2b/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Se6#
    • 1...Qf1
      • 2.Se6#
    • 1...Qd3
      • 2.Se6#
    • 1...Qf3
      • 2.Se6#
    • 1...Qb5
      • 2.Se6#
    • 1...Qa6
      • 2.Se6#
    • 1...Qb2
      • 2.Se6#
    • 1...Qc2
      • 2.Se6#
    • 1...Qd2
      • 2.Se6#
    • 1...Qf2
      • 2.Se6#
    • 1...Qg2
      • 2.Se6#
    • 1...Qe6
      • 2.Sxe6#
    • 1...Qe7+
      • 2.dxe7#
    • 1...Qe8+
      • 2.fxe8Q#
      • 2.fxe8R#
    • 1...Be5
      • 2.Se6#
    • 1...Se5
      • 2.d7#
  • Keys
    • 1.Bd5!
      • threat
        • 2.Sg6#
      • 1...Qe7+
        • 2.dxe7#
      • 1...Qe8+
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Qe6
        • 2.Sxe6#
      • 1...Se5
        • 2.d7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 12
  • Sets
    • Q(a);N_GUARD::S(F)
    • Q(a);N_GUARD::S(F),XQ(a)
    • Q(a);CHECK,OGATE::P(C),XQ(a)
    • Q(a);CHECK,OGATE::PXQ(a)=Q
    • B(b);S_CUTQ(a)::S(F)
    • S(e);OGATE::B(A)+P(C)
  • Actual
    • B(B);
    • Threat
      • S(H)
    • Vars
      • Q(a);CHECK,OGATE::P(C),XQ(a)
      • Q(a);CHECK,OGATE::PXQ(a)=Q
      • Q(a);N_GUARD::S(F),XQ(a)
      • S(e);OGATE::B(A)+P(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).