MESON Chess Problem Database

Problem Display
PID: 189719 (Q1B5/n2q2n1/2Np1p2/3k1p1p/1P5N/3PP3/2P5/K7 w - - 0 1)

Ludanyi, Antal

Deutsches Wochenschach, 1912

Q1B5/n2q2n1/2Np1p2/3k1p1p/1P5N/3PP3/2P5/K7

#2

9 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.c4#
    • 1...Qe8
      • 2.c4#
    • 1...Qc7
      • 2.c4#
    • 1...Qe7
      • 2.c4#
    • 1...Qf7
      • 2.c4#
    • 1...Qd8
      • 2.c4#
    • 1...Se6
      • 2.c4#
  • Tries
    • 1.Se7+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Ke6!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sf4#
      • 1...Ke6
        • 2.Sd8#
      • 1...Qxc6
        • 2.c4#
      • 1...Sxc6
        • 2.Qa2#
      • 1...Qb7
        • 2.Sce7#
      • 1...Se6
        • 2.Sce7#
        • 2.c4#
      • 1...f4
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • Q(g);::P(B)
    • S(h);SBLOCK::P(B)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(H)
      • Refutation
        • K(a);P_SPINQ(g),S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(a);P_SPINQ(g),S_FLIGHT::S(G)
      • Q(g);P_SPINQ(g),XS(G)::P(B)
      • S(f);OGATE,P_SPINS(f),SBLOCK,XS(G)::QAB(H)
      • Q(g);::S(G)
      • P(b);::S(F),XP(b)
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).