MESON Chess Problem Database

Problem Display
PID: 49160 (1RRK2b1/4p3/8/1PqP4/2k1B1Q1/2r1pPp1/P1NPP3/2r5 w - - 0 1)

van Dijk, Johannes

1st HM., Reading Observer, 1907

1RRK2b1/4p3/8/1PqP4/2k1B1Q1/2r1pPp1/P1NPP3/2r5

#2

12 + 8

204 Op de Hoogte 1907

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Rxc6#
    • 1...Qc7+
      • 2.Rxc7#
    • 1...Qxc8+
      • 2.Qxc8#
    • 1...Rd3
      • 2.exd3#
    • 1...Bxd5
      • 2.Bd3#
  • Keys
    • 1.d6!
      • threat
        • 2.Ba8#
      • 1...Qc7+
        • 2.Rxc7#
      • 1...Qxc8+
        • 2.Qxc8#
      • 1...Qc6
        • 2.Rxc6#
      • 1...Rd3
        • 2.exd3#
      • 1...Bd5
        • 2.Bd3#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bh7
        • 2.Qe6#
      • 1...e5
        • 2.Qxg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(f);OGATEB::R(K),XQ(f)
    • Q(f);CHECK,OGATEB::R(K),XQ(f)
    • Q(f);CHECK,N_SPINQ(f),OGATE,XR(K)::QAR(G),XQ(f)
    • R(b);OGATE,P_PINP(I)::P(D),XR(b)
    • B(h);SBLOCK,XP(I)::QAR(G)+B(F),DCHECK
  • Actual
    • P(I);
    • Threat
      • QAR(G)+B(F)
    • Vars
      • Q(f);CHECK,OGATEB::R(K),XQ(f)
      • Q(f);CHECK,N_SPINQ(f),OGATE,XR(K)::QAR(G),XQ(f)
      • Q(f);OGATEB::R(K),XQ(f)
      • R(b);OGATE,P_PINP(I)::P(D),XR(b)
      • B(h);SBLOCK::QAR(G)+B(F),DCHECK
      • B(h);N_GUARD::QAB(G),XB(h)
      • B(h);N_GUARD::QAB(G)
      • P(g);N_GUARD::QAB(G),XB(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).