MESON Chess Problem Database

Problem Display
PID: 249499 (5B2/2p5/Kpkb4/2Np4/4PQ2/8/8/7B w - - 0 1)

Gorges, Nikolaus

Die Schwalbe, 1929

5B2/2p5/Kpkb4/2Np4/4PQ2/8/8/7B

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf4
      • 2.exd5#
    • 1...Be5
      • 2.exd5#
  • Tries
    • 1.Qf5?
      • threat
        • 2.Qxd5#
      • 1...dxe4
        • 2.Bxe4#
      • 1...bxc5
        • 2.exd5#
      • 1...Be5
        • 2.Qd7#
        • 2.exd5#
      • 1...d4
        • 2.Qd5#
      • 1...Kxc5!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qxd5#
      • 1...Kxc5
        • 2.Qc3#
      • 1...Bxe5
        • 2.exd5#
      • 1...dxe4
        • 2.Bxe4#
      • 1...bxc5
        • 2.Qe8#
      • 1...d4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(d);XQ(C)::P(B),XP(a)
    • B(d);::P(B),XP(a)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB1(C),XP(a)
      • Vars
        • P(a);OGATE,P_SPINP(a),XP(B)::B(A),XP(a)
        • P(b);SBLOCK,XS(D)::P(B),XP(a)
        • P(a);::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT,P_SPINB(d),P_SPINP(a),XS(D)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C),XP(a)
    • Vars
      • K(c);OGATEB,P-FLIGHT,P_SPINB(d),P_SPINP(a),XS(D)::QAR2(C)
      • B(d);XQ(C)::P(B),XP(a)
      • P(a);OGATE,P_SPINP(a),XP(B)::B(A),XP(a)
      • P(b);SBLOCK,XS(D)::QAB(C)
      • P(a);::QAB1(C)
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).