MESON Chess Problem Database

Problem Display
PID: 229168 (6bn/4nN2/4pq2/3rPRNp/3b2k1/3B2P1/6K1/8 w - - 0 1)

Szentgyorgy, Erno

Zaszlonk, 1926

6bn/4nN2/4pq2/3rPRNp/3b2k1/3B2P1/6K1/8

#2

7 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Sh6#
    • 1...Qxg5
      • 2.Rxg5#
    • 1...Qg7
      • 2.Rf4#
    • 1...Qg6
      • 2.Rf4#
    • 1...Qh6
      • 2.Sxh6#
      • 2.Rf4#
    • 1...Sxf5
      • 2.Be2#
    • 1...Seg6
      • 2.Sh6#
    • 1...Shg6
      • 2.Sh6#
    • 1...exf5
      • 2.Be2#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sh2#
      • 1...Qh4
        • 2.Sh6#
        • 2.Rf4#
      • 1...Bg1!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sxf6#
      • 1...Kxf5
        • 2.Sf2#
        • 2.Sxf6#
      • 1...Qxe5
        • 2.Sh6#
      • 1...Qxf5
        • 2.Sh6#
      • 1...Qxf7
        • 2.Rg5#
      • 1...Bxe5
        • 2.Sf2#
      • 1...Qh4
        • 2.Sh6#
        • 2.Rf4#
      • 1...Qg5
        • 2.Rxg5#
      • 1...Qg7
        • 2.Rf4#
      • 1...Qg6
        • 2.Rf4#
      • 1...Qh6
        • 2.Sxh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(f);N_GUARD,XP(D)::S(G)
    • Q(f);OGATE,XS(F)::R1(E),XQ(f)
    • Q(f);N_GUARD::R1(E)
    • S(g);SBLOCK,XR(E)::B(B)
    • S(g);S_CUTQ(f)::S(G)
    • S(i);S_CUTQ(f)::S(G)
    • P(e);SBLOCK,XR(E)::B(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Refutation
        • B(a);
  • Actual
    • S(F);
    • Threat
      • S(F),XQ(f)
    • Vars
      • Q(f);N_GUARD,XP(D)::S(G)
      • Q(f);N_GUARD,XR(E)::S(G)
      • Q(f);N_GUARD,XS(G)::R1(E)
      • B(a);N_GUARD,XP(D)::S(F)
      • Q(f);N_GUARD::R1(E),XQ(f)
      • Q(f);N_GUARD::R1(E)
      • Q(f);N_GUARD::S(G),XQ(f)
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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).