MESON Chess Problem Database

Problem Display
PID: 161093 (4Q3/8/1p1N4/4n3/1B1k3r/2Np2R1/b2P1r2/K3b3 w - - 0 1)

Jorgensen, Walther Martinus Johannes

3rd Prize, Skakbladet, 1945

4Q3/8/1p1N4/4n3/1B1k3r/2Np2R1/b2P1r2/K3b3

#2

7 + 8

15593 170 Skakopgaver (Jorgensen) 1975

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Scb5#
    • 1...Sf3
      • 2.Qe3#
    • 1...Sc4
      • 2.Sdb5#
    • 1...Sg4
      • 2.Qe4#
    • 1...Sc6
      • 2.Qe3#
    • 1...Sg6
      • 2.Qe3#
    • 1...Sd7
      • 2.Qe3#
    • 1...Sf7
      • 2.Qe3#
  • Tries
    • 1.Rxd3+?
      • 1...Sxd3
        • 2.Qe3#
      • 1...Kxd3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxb6#
      • 1...Sf3
        • 2.Sf5#
      • 1...Sc4
        • 2.Qd5#
      • 1...Sg4
        • 2.Rxd3#
      • 1...Sc6
        • 2.Rxd3#
      • 1...Sg6
        • 2.Rxd3#
      • 1...Sd7
        • 2.Rxd3#
      • 1...Sf7
        • 2.Rxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK::S(C)
    • S(g);OGATE::QAB1(G)
    • S(g);SBLOCK::S(F)
    • S(g);OGATE::QAR1(G)
  • Tries
    • Try
      • R(D);CHECK,XP(d)
      • Vars
        • S(g);OGATE,XR(D)::QAB1(G)
      • Refutation
        • K(e);P-FLIGHT,XR(D)
  • Actual
    • Q(G);
    • Threat
      • QAB(G),XP(h)
    • Vars
      • S(g);S_CUTR(c)::S(F)
      • S(g);S_CUTB(b)::QAR1(G)
      • S(g);N_GUARD::R1(D),XP(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).