MESON Chess Problem Database

Problem Display
PID: 209828 (2NN3B/KQ1p2qr/1p3k1p/1Rb4P/2b1PP2/8/8/8 w - - 0 1)

Keller, Izabella

Deutsche Schachblatter, 1936

2NN3B/KQ1p2qr/1p3k1p/1Rb4P/2b1PP2/8/8/8

#2

9 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Rf5#
    • 1...Bf2
      • 2.Rf5#
    • 1...Ba3
      • 2.Rf5#
    • 1...Be3
      • 2.Rf5#
    • 1...Bb4
      • 2.Rf5#
    • 1...Bd4
      • 2.Rf5#
    • 1...Bd6
      • 2.Rf5#
    • 1...Be7
      • 2.Rf5#
    • 1...Bf8
      • 2.Rf5#
    • 1...d5
      • 2.Qf7#
    • 1...d6
      • 2.Qe7#
  • Tries
    • 1.Qxd7?
      • threat
        • 2.e5#
      • 1...Bd4
        • 2.Rf5#
        • 2.Qe7#
      • 1...Bd6
        • 2.Rf5#
      • 1...Be6!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qe5#
      • 1...Bd4
        • 2.Rf5#
      • 1...Bd6
        • 2.Rf5#
      • 1...d5
        • 2.Qf7#
      • 1...d6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • B(b);OGATE::R1(C)
    • P(f);OGATE,P_PINQ(F)::QAR1(F)
    • P(f);OGATE,P_PINQ(F)::QAB1(F)
  • Tries
    • Try
      • Q(F);P_SPINQ(F),XP(f)
      • Threat
        • P(A)
      • Vars
        • B(b);OGATE::R1(C)
      • Refutation
        • B(a);
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • B(b);OGATE::R1(C)
      • P(f);OGATE,P_PINQ(F)::QAR1(F)
      • P(f);OGATE,P_PINQ(F)::QAB1(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).