MESON Chess Problem Database

Problem Display
PID: 218033 (4N3/2rq4/B1p1p3/5R2/4k1pP/4p3/3PN1K1/8 w - - 0 1)

Moller, Ferdinand Friedrich

Deutsche Schachzeitung, 1909

4N3/2rq4/B1p1p3/5R2/4k1pP/4p3/3PN1K1/8

#2

7 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc8
      • 2.Sd6#
    • 1...Qd4
      • 2.Sg3#
    • 1...Qd6
      • 2.Sxd6#
    • 1...Qf7
      • 2.Sd6#
    • 1...Qg7
      • 2.Sd6#
    • 1...Qh7
      • 2.Sd6#
  • Keys
    • 1.d4!
      • threat
        • 2.Re5#
      • 1...Kxf5
        • 2.Bd3#
      • 1...Qxd4
        • 2.Sg3#
      • 1...exf5
        • 2.Sf6#
      • 1...e5
        • 2.Rxe5#
      • 1...Qd5
        • 2.Rf4#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Qg7
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD::S(G)
    • Q(g);SBLOCK::S(B)
    • Q(g);N_GUARD::S(G),XQ(g)
  • Actual
    • P(A);
    • Threat
      • R1(E)
    • Vars
      • K(b);S_FLIGHT,XR(E)::B(F)
      • Q(g);SBLOCK,XP(A)::S(B)
      • P(e);SBLOCK,XR(E)::S(G)
      • P(e);::R1(E),XP(e)
      • Q(g);SBLOCK::R1(E)
      • Q(g);N_GUARD::S(G),XQ(g)
      • Q(g);N_GUARD::S(G)
HTML5 logo

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).