MESON Chess Problem Database

Problem Display
PID: 189764 (4q3/4b3/1N2R2r/1p5r/b2kN2p/3p1ppK/8/4Q3 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1912

4q3/4b3/1N2R2r/1p5r/b2kN2p/3p1ppK/8/4Q3

#2

5 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Qxd2#
    • 1...g2
      • 2.Qf2#
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qb4#
      • 1...Kxc5
        • 2.Qc3#
      • 1...Rxc5
        • 2.Re4#
      • 1...Rxe6
        • 2.Sxe6#
      • 1...Bxc5
        • 2.Qa1#
      • 1...d2
        • 2.Qe3#
      • 1...Re5
        • 2.Qxe5#
      • 1...Bb3
        • 2.Sxb3#
      • 1...b4
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::QAR2(A),XP(a)
    • P(c);N_GUARD::QAB(A)
  • Actual
    • S(C);
    • Threat
      • QAR2(A)
    • Vars
      • K(e);S_FLIGHT,XS(C)::QAR2(A)
      • R(h);SBLOCK,XS(C)::R1(E)
      • R(i);XR(E)::S(C),XR(i)
      • B(j);SBLOCK,XS(C)::QAB(A)
      • P(a);::QAB1(A)
      • R(h);N_GUARD::QAB1(A),XR(h)
      • B(d);N_GUARD::S(C),XB(d)
      • P(g);::QAR2(A),XP(g)
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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).