MESON Chess Problem Database

Problem Display
PID: 242682 (R1B5/b7/1k6/p7/P7/1q6/bRQP4/3K4 w - - 0 1)

Hartong, Jan

Tijdschrift vd KNSB, 1949

R1B5/b7/1k6/p7/P7/1q6/bRQP4/3K4

#2

7 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Rxb5#
    • 1...Bb1
      • 2.Rxb3#
    • 1...Bb8
      • 2.Ra6#
  • Keys
    • 1.d4!
      • 1...Qxb2
        • 2.Qc5#
      • 1...Qb4
        • 2.Qc5#
      • 1...Qb5
        • 2.Rxb5#
        • 2.Qc5#
      • 1...Bb1
        • 2.Rxb3#
      • 1...Bb8
        • 2.Ra6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_PINQ(C),OGATE::R1(B),XQ(b)
    • B(a);N_GUARD::R(B),XQ(b)
    • B(e);OGATE::R1(F)
  • Actual
    • P(D);
    • Vars
      • Q(b);N_PINQ(C),N_SPINQ(b),XR(B)::QAB1(C)
      • Q(b);N_PINQ(C)::QAB1(C)
      • B(a);N_GUARD::R(B),XQ(b)
      • B(e);OGATE::R1(F)
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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).