MESON Chess Problem Database

Problem Display
PID: 223402 (4Q3/5K2/3N4/1p1k4/1p2N3/3b4/2n5/8 w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

Wiener Hausfrauen-Zeitung, 1886

4Q3/5K2/3N4/1p1k4/1p2N3/3b4/2n5/8

#2

4 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qxb5+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Bxb5!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Sf5#
      • 1...Kc6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Qe6#
      • 1...Bxe4
        • 2.Qxb5#
      • 1...Sd4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK,XP(d)
      • Vars
        • K(e);P-FLIGHT::QAB1(D)
      • Refutation
        • B(b);XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(e);P-FLIGHT::S(B)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAB1(D)
    • Vars
      • K(e);S_FLIGHT::QAB(D)
      • B(b);N_GUARD,SBLOCK,XS(A)::QAR2(D),XP(d)
      • S(a);N_GUARD,SBLOCK::S(B)
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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).