MESON Chess Problem Database

Problem Display
PID: 196873 (3K4/1pR2p2/R1qk1p2/1p1p2N1/5P2/2b1nQ2/B1N3n1/8 w - - 0 1)

Szagel, Karoly

Magyar Sakkvilag, 1919

3K4/1pR2p2/R1qk1p2/1p1p2N1/5P2/2b1nQ2/B1N3n1/8

#2

8 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6
      • 2.Rxb6#
    • 1...Sd1
      • 2.Qxd5#
    • 1...Sf1
      • 2.Qxd5#
    • 1...Sxc2
      • 2.Qxd5#
    • 1...Sg4
      • 2.Qxd5#
    • 1...Sf5
      • 2.Qxd5#
    • 1...d4
      • 2.Se4#
  • Tries
    • 1.Qxe3?
      • threat
        • 2.Sxf7#
        • 2.Rd7#
        • 2.Qe7#
      • 1...Qxa6
        • 2.Sxf7#
        • 2.Qc5#
        • 2.Qe7#
      • 1...fxg5
        • 2.Rd7#
        • 2.Qe7#
      • 1...bxa6
        • 2.Sxf7#
        • 2.Qe7#
      • 1...Bd4
        • 2.Qe7#
      • 1...d4
        • 2.Se4#
        • 2.Qe7#
      • 1...Qb6
        • 2.Sxf7#
        • 2.Rxb6#
        • 2.Qc5#
        • 2.Qxb6#
        • 2.Qe7#
      • 1...Ba5
        • 2.Sxf7#
        • 2.Qe7#
      • 1...Be5
        • 2.Rd7#
      • 1...b6
        • 2.Sxf7#
        • 2.Qe7#
      • 1...Sxe3!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qe7#
      • 1...Kc5
        • 2.Qe7#
      • 1...dxe4
        • 2.Sxe4#
      • 1...Be5
        • 2.Qb4#
      • 1...Sf5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(f);OGATEB,P_PINR(G)::R(F),XQ(f)
    • S(c);N_GUARD::QAR1(C),XP(e)
    • S(c);N_GUARD,XS(B)::QAR1(C),XP(e)
    • P(e);N_GUARD::S(E)
  • Tries
    • Try
      • Q(C);XS(c)
      • Threat
        • DUALS(3)
      • Vars
        • B(b);::QAB1(C)
        • B(b);::R1(G)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(g);S_FLIGHT::QAB(C)
      • P(e);XQ(C)::S(E),XP(e)
      • B(b);N_GUARD::QAB(C)
      • S(c);N_GUARD::QAR1(C),XP(e)
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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).