MESON Chess Problem Database

Problem Display
PID: 16542 (k7/p5R1/3BpPp1/P1p3q1/8/8/6N1/6KB w - - 0 1)

Neale, Harry R

Chess, 1941

k7/p5R1/3BpPp1/P1p3q1/8/8/6N1/6KB

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1+
      • 2.Se1#
    • 1...Qe3+
      • 2.Sxe3#
    • 1...Qf4
      • 2.Sxf4#
    • 1...Qh4
      • 2.Sxh4#
    • 1...Qxf6
      • 2.Sf4#
    • 1...Qh6
      • 2.Sh4#
    • 1...Qxg2+
      • 2.Bxg2#
  • Keys
    • 1.a6!
      • threat
        • 2.Rg8#
      • 1...Qc1+
        • 2.Se1#
      • 1...Qe3+
        • 2.Sxe3#
      • 1...Qxg2+
        • 2.Bxg2#
      • 1...Qxf6
        • 2.Sf4#
      • 1...Qh6
        • 2.Sh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(b);CHECK,N_PINS(C)::B(B)+S(C)
    • Q(b);CHECK,N_PINS(C)::B(B)+S(C),XQ(b)
    • Q(b);N_PINS(C)::B(B)+S(C),XQ(b)
    • Q(b);N_PINS(C),XP(F)::B(B)+S(C)
    • Q(b);N_PINS(C),SBLOCK::B(B)+S(C)
    • Q(b);CHECK,OGATE,P_SPINQ(b),XS(C)::B(B),XQ(b)
  • Actual
    • P(D);
    • Threat
      • R(G)
    • Vars
      • Q(b);CHECK,N_PINS(C)::B(B)+S(C)
      • Q(b);CHECK,N_PINS(C)::B(B)+S(C),XQ(b)
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(C)::B(B),XQ(b)
      • Q(b);N_PINS(C),XP(F)::B(B)+S(C)
      • Q(b);N_PINS(C),SBLOCK::B(B)+S(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).