MESON Chess Problem Database

Problem Display
PID: 21475 (8/8/8/2N1N3/P2k2p1/6Q1/7n/K1R3bb w - - 0 1)

van Dijk, Johannes

Good Companions, 1919

8/8/8/2N1N3/P2k2p1/6Q1/7n/K1R3bb

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qc3#
  • Tries
    • 1.Qf4+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Kd5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qe5#
      • 1...Kxc5
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...Bd5
        • 2.Qxg1#
      • 1...Sf3
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR1(C),XB(b)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAB1(C)
    • Vars
      • K(d);S_FLIGHT,XS(E)::QAB1(C)
      • K(d);P-FLIGHT::QAR1(C)
      • B(b);SBLOCK::QAB(C),XB(a)
      • S(c);S_CUTB(b)::QAR2(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).