MESON Chess Problem Database

Problem Display
PID: 222858 (n7/1N6/5B2/2Nk1P1R/B5pK/3P1q1n/1p4Q1/3R4 w - - 0 1)

McHardy, JK

British Chess Magazine, 1930

n7/1N6/5B2/2Nk1P1R/B5pK/3P1q1n/1p4Q1/3R4

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxe4#
    • 1...b1S
      • 2.Qa2#
    • 1...g3
      • 2.Qxf3#
  • Keys
    • 1.Se4!
      • threat
        • 2.Sc3#
      • 1...Qf2+
        • 2.Sxf2#
      • 1...Qg3+
        • 2.Sxg3#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qxd3
        • 2.Sed6#
      • 1...Qxf5
        • 2.Sec5#
      • 1...b1S
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(b);OGATE::QAB1(B),XQ(b)
    • P(a);OGATE::QAB(B)
    • P(d);N_GUARD::QAB(B),XQ(b)
  • Actual
    • S(F);N_PINQ(b)
    • Threat
      • S(F)
    • Vars
      • Q(b);CHECK::QAB(B)+S(F),XQ(b)
      • Q(b);OGATE,P_SPINQ(b),XS(F)::QAB1(B),XQ(b)
      • Q(b);P_SPINQ(b),XP(C)::QAB(B)+S(F)
      • Q(b);P_SPINQ(b),XP(G)::QAB(B)+S(F)
      • P(a);OGATE::QAB(B)
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).