MESON Chess Problem Database

Problem Display
PID: 201729 (r4b2/7r/4N1p1/N1p1p3/2P1k3/Q4R1P/n3p3/1b3nK1 w - - 0 1)

Moller, Ferdinand Friedrich

Deutsche Tageszeitung, 1922

r4b2/7r/4N1p1/N1p1p3/2P1k3/Q4R1P/n3p3/1b3nK1

#2

7 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Qxd3#
    • 1...Sd2
      • 2.Qe3#
    • 1...Sh2
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sg3
      • 2.Qe3#
  • Keys
    • 1.Sb3!
      • threat
        • 2.Sg5#
      • 1...Kxf3
        • 2.Sd2#
      • 1...Se3
        • 2.Sd2#
      • 1...Rh5
        • 2.Qxa8#
      • 1...Bh6
        • 2.Sbxc5#
      • 1...Be7
        • 2.Qxa8#
      • 1...g5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAB1(B),XB(a)
    • S(b);N_GUARD::QAR1(B)
    • S(b);N_GUARD::QAR1(B),XS(b)
  • Actual
    • S(F);
    • Threat
      • S(G)
    • Vars
      • K(e);S_FLIGHT,XR(C)::QAR(B)+S(F),DCHECK
      • S(b);N_GUARD::S(F)
      • R(i);N_GUARD::QAB(B),XR(j)
      • B(k);N_GUARD::S(F),XP(f)
      • B(k);S_CUTR(i)::QAB(B),XR(j)
      • P(h);::S(G),XP(h)
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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).