MESON Chess Problem Database

Problem Display
PID: 66325 (qr6/p6p/5B1K/b5p1/1p1Q1p2/3P3R/1ppkP2P/5RNr w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1931

qr6/p6p/5B1K/b5p1/1p1Q1p2/3P3R/1ppkP2P/5RNr

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.dxe4#
    • 1...Bb6
      • 2.Qxb4#
    • 1...c1S
      • 2.Qxb2#
    • 1...f3
      • 2.Bxg5#
    • 1...g4
      • 2.Qxf4#
  • Keys
    • 1.e4!
      • threat
        • 2.Qf2#
      • 1...Qxe4
        • 2.dxe4#
      • 1...Rxh2
        • 2.Rxh2#
      • 1...fxe4 ep
        • 2.Qxe3#
      • 1...c1S
        • 2.Qxb2#
      • 1...Bb6
        • 2.Qxb4#
      • 1...f3
        • 2.Bxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(k);OGATE::QAR(G)+P(E),XQ(k)
    • B(g);N_GUARD,S_CUTR(l)::QAB(G),XP(e)
    • P(c);OGATEB::QAR2(G),XP(b)
    • P(f);OGATEB::B(H),XP(h)
    • P(h);N_GUARD::QAB(G),XP(f)
  • Actual
    • P(C);
    • Threat
      • QAR2(G)
    • Vars
      • Q(k);OGATE,XP(C)::QAR(G)+P(E),XQ(k)
      • R(a);OGATE,P_PINR(F),XP(D)::R(F),XR(a)
      • P(f);EP,N_GUARD,XP(C)::QAB1(G),XP(f)
      • P(c);OGATEB::QAR2(G),XP(b)
      • B(g);N_GUARD,S_CUTR(l)::QAB(G),XP(e)
      • P(f);OGATEB::B(H),XP(h)
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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).