MESON Chess Problem Database

Problem Display
PID: 190032 (N7/3pn3/b1kN4/8/1B6/KQP5/8/8 w - - 0 1)

van Dijk, Johannes

De Maasbode, 1913

N7/3pn3/b1kN4/8/1B6/KQP5/8/8

#2

6 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bb7
      • 2.Qc4#
    • 1...Bc8
      • 2.Qc4#
  • Tries
    • 1.Qa4+?
      • 1...Bb5
        • 2.Qxb5#
      • 1...Kd5!
  • Keys
    • 1.c4!
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Bb5
        • 2.cxb5#
      • 1...Bb7
        • 2.Qa4#
      • 1...Bc8
        • 2.Qa4#
      • 1...Sd5
        • 2.cxd5#
      • 1...Sf5
        • 2.Qf3#
      • 1...Sg6
        • 2.Qf3#
      • 1...Sc8
        • 2.Qf3#
      • 1...Sg8
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAR2(B),XB(a)
    • B(a);N_GUARD::QAR2(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(B),XB(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(C);
    • Vars
      • B(a);OGATE,XP(C)::QAR2(B),XB(a)
      • B(a);OGATE::P(C),XB(a)
      • B(a);N_GUARD::QAB(B)
      • S(d);OGATE::P(C),XS(d)
      • S(d);N_GUARD::QAB(B)
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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).