MESON Chess Problem Database

Problem Display
PID: 264819 (1n1n4/2rP1p2/1Npk1PR1/Q1p3N1/3pP3/4p3/8/4R2K w - - 0 1)

Jespersen, Karl Lorenz Jesper

Skakbladet, 1988

1n1n4/2rP1p2/1Npk1PR1/Q1p3N1/3pP3/4p3/8/4R2K

#2

9 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd7
      • 2.Sc4#
    • 1...Sxd7
      • 2.Sc4#
    • 1...Se6
      • 2.Sxf7#
    • 1...c4
      • 2.e5#
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qh2#
      • 1...Ke5
        • 2.Qh2#
      • 1...Sxd7
        • 2.Sc4#
      • 1...exd2
        • 2.e5#
      • 1...c4
        • 2.Qxd4#
      • 1...Se6
        • 2.Sxf7#
      • 1...e2
        • 2.Qf4#

Published posthumously.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(f);SBLOCK,XP(I)::S(F)
    • S(h);SBLOCK,XP(I)::S(F)
    • S(i);N_GUARD,SBLOCK::S(E),XP(g)
    • P(c);::P(C)
  • Actual
    • Q(D);P_PINP(b)
    • Threat
      • QAB(D)
    • Vars
      • K(e);N_SPINP(b),S_FLIGHT::QAB(D)
      • S(h);SBLOCK,XP(I)::S(F)
      • P(a);N_SPINP(b),XQ(D)::P(C)
      • P(c);N_GUARD::QAR2(D),XP(b)
      • S(i);N_GUARD,SBLOCK::S(E),XP(g)
      • P(a);OGATE::QAB(D)
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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).