MESON Chess Problem Database

Problem Display
PID: 7047 (4n3/r3bQp1/b1B1N3/B1p3p1/6p1/4k1p1/1R4p1/K3N1nq w - - 0 1)

Ulehla, Johann Viktor

Wiener Schachzeitung, 1935

4n3/r3bQp1/b1B1N3/B1p3p1/6p1/4k1p1/1R4p1/K3N1nq

#2

7 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Bd2#
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qe4#
        • 2.Qe5#
      • 1...Qh7
        • 2.Sxg2#
      • 1...Be2
        • 2.Sc2#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Bd6
        • 2.Qe4#
      • 1...Bf6
        • 2.Qe4#
      • 1...Se2
        • 2.Bd2#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sd6
        • 2.Qxc5#
      • 1...Sf6
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(a);P_PINS(B),SBLOCK::B(D)
  • Actual
    • Q(G);
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);N_GUARD::S(B),XP(c)
      • B(i);P_PINB(D),SBLOCK::S(B)
      • B(i);N_GUARD,P_PINB(D)::QAR1(G),XB(i)
      • B(k);::QAR1(G)
      • B(k);P_PINR(C)::QAR1(G)
      • S(a);P_PINS(B),SBLOCK::B(D)
      • S(a);P_PINS(B)::QAR1(G)
      • S(m);S_CUTB(k)::QAB(G),XP(g)
      • S(m);S_CUTB(k)::QAB(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).