MESON Chess Problem Database

Problem Display
PID: 273841 (1KB2R2/5p2/3N4/1pp4p/1Rq5/5kP1/2PQ2nP/8 w - - 0 1)

Pietzcker, Eduard

Die Schwalbe, 1932

1KB2R2/5p2/3N4/1pp4p/1Rq5/5kP1/2PQ2nP/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Bb7#
    • 1...Qc3
      • 2.Bb7#
  • Tries
    • 1.Rxc4?
      • threat
        • 2.Bb7#
      • 1...Se3
        • 2.Rf4#
      • 1...Sf4
        • 2.Rxf4#
      • 1...bxc4!
    • 1.Qxg2+?
      • 1...Ke3
        • 2.Sf5#
      • 1...Kxg2!
  • Keys
    • 1.Sxf7!
      • threat
        • 2.Sg5#
      • 1...Qf4+
        • 2.Se5#
      • 1...Ke4
        • 2.Qd3#
      • 1...Qxf7
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(c);N_GUARD::B(H)
  • Tries
    • Try
      • R(E);XQ(c)
      • Threat
        • B(H)
      • Vars
        • S(a);N_GUARD::R1(E)
        • S(a);N_GUARD,N_SPINP(g)::R1(E),XS(a)
      • Refutation
        • P(d);XR(E)
    • Try
      • Q(B);CHECK,XS(a)
      • Vars
        • K(b);N_GUARD,N_SPINP(g),P-FLIGHT::S(F)
      • Refutation
        • K(b);N_SPINP(g),S_FLIGHT,XQ(B)
  • Actual
    • S(F);XP(g)
    • Threat
      • R(I)+S(F),DCHECK
    • Vars
      • Q(c);CHECK::S(F)
      • K(b);N_GUARD,P_SPINQ(c),S_CUTS(a),S_FLIGHT::QAB1(B)
      • Q(c);N_GUARD,P_SPINQ(c),XS(F)::B(H)
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).