MESON Chess Problem Database

Problem Display
PID: 231289 (5b2/8/3p4/1ppP4/3k4/2R5/1PP1p2B/Q2bK2B w - - 0 1)

van Dijk, Johannes

De Maasbode, 1927

5b2/8/3p4/1ppP4/3k4/2R5/1PP1p2B/Q2bK2B

#2

8 + 7

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qa7#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qd2#
        • 2.Qe3#
        • 2.Qf4#
      • 1...Bxc2
        • 2.Qe3#
      • 1...c4
        • 2.Qe3#
      • 1...Bh6!
    • 1.Qa2?
      • threat
        • 2.Rd3#
      • 1...c4
        • 2.Qa7#
      • 1...Bxc2!
    • 1.b3?
      • threat
        • 2.Rd3#
        • 2.Rg3#
        • 2.Rh3#
      • 1...Bxc2
        • 2.Rg3#
        • 2.Rh3#
      • 1...c4!
  • Keys
    • 1.Rh3!
      • threat
        • 2.b3#
      • 1...Kc4
        • 2.Rh4#
      • 1...c4
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATEB::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • B(a);XP(E)::QAB1(A)
        • P(e);::QAB1(A)
      • Refutation
        • B(g);
    • Try
      • Q(A);
      • Threat
        • R1(G)
      • Vars
        • P(e);OGATEB::QAB(A)
      • Refutation
        • B(a);XP(E)
    • Try
      • P(D);
      • Threat
        • DUALS(3)
      • Refutation
        • P(e);
  • Actual
    • R(G);
    • Threat
      • QAB(A)+P(D)
    • Vars
      • K(c);P-FLIGHT::R(G)
      • P(e);OGATEB,SBLOCK::QAB(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).