MESON Chess Problem Database

Problem Display
PID: 245114 (bR1B2B1/1q2p2K/8/P4R2/pkP4Q/nN2r3/2pPr3/N7 w - - 0 1)

Haring, Jacobus

De Maasbode, 1957

bR1B2B1/1q2p2K/8/P4R2/pkP4Q/nN2r3/2pPr3/N7

#2

11 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e5+
      • 2.Be7#
      • 2.Qe7#
    • 1...e6+
      • 2.Be7#
  • Keys
    • 1.Sc1!
      • threat
        • 2.Sa2#
      • 1...e5+
        • 2.Qe7#
      • 1...e6+
        • 2.Be7#
      • 1...Sxc4
        • 2.Sxc2#
      • 1...Re5
        • 2.Sd3#
      • 1...Sb1
        • 2.Sxc2#
      • 1...Sb5
        • 2.Sxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(h);CHECK,S_CUTR(d)::B(J)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • P(h);CHECK,S_CUTR(d)::QAB(E)
      • P(h);CHECK,S_CUTR(d)::B(J)
      • S(c);N_GUARD,P_SPINS(c),XP(D)::S(A),XP(a)
      • R(d);N_GUARD::S(C)
      • S(c);N_GUARD::S(A),XP(a)
      • S(c);N_GUARD,N_SPINQ(g)::S(A),XP(a)
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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).