MESON Chess Problem Database

Problem Display
PID: 108086 (6B1/8/5p1B/5k2/2p1p1pR/2K4b/4QP2/5R2 w - - 0 1)

Fraenkel, Febus Hirsch

Bulletin de la FFE, 1934

6B1/8/5p1B/5k2/2p1p1pR/2K4b/4QP2/5R2

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Qh5#
      • 2.Qxe4#
  • Tries
    • 1.Kd4?
      • threat
        • 2.Qxe4#
      • 1...Bg2
        • 2.Qxg4#
      • 1...e3
        • 2.Qc2#
      • 1...Kg6!
    • 1.Qxg4+?
      • 1...Ke5
        • 2.Bf4#
        • 2.Qf4#
      • 1...Bxg4!
  • Keys
    • 1.f4!
      • 1...Kg6
        • 2.f5#
      • 1...Bxf1
        • 2.Qxg4#
      • 1...exf4 ep
        • 2.Bh7#
      • 1...gxf4 ep
        • 2.Qxe4#
      • 1...e3
        • 2.Qc2#
      • 1...Bg2
        • 2.Qxg4#
      • 1...g3
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAB1(B),XP(c)
      • Vars
        • B(a);N_GUARD::QAB1(B),XP(d)
        • P(c);OGATEB::QAB(B)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(B);CHECK,XP(d)
      • Refutation
        • B(a);XQ(B)
  • Actual
    • P(C);
    • Vars
      • K(e);OGATE,S_FLIGHT::P(C)
      • B(a);N_GUARD,XR(A)::QAB1(B),XP(d)
      • P(c);EP,P_SPINP(c),XP(C)::B(G)
      • P(d);EP,P_SPINP(d),XP(C)::QAB1(B),XP(c)
      • P(c);OGATEB::QAB(B)
      • B(a);N_GUARD::QAB1(B),XP(d)
      • P(d);OGATE::QAR2(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).