MESON Chess Problem Database

Problem Display
PID: 6264 (4b3/4K3/7p/4k1PR/2P5/2PPb3/2n1Q3/2B5 w - - 0 1)

Giegold, Fritz Emil

Deutsche Schachblatter, 1928

4b3/4K3/7p/4k1PR/2P5/2PPb3/2n1Q3/2B5

#2

8 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qf6#
      • 1...Bf2
        • 2.g6#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Bc5+!
    • 1.Qf3?
      • threat
        • 2.Qe4#
        • 2.Qf6#
      • 1...Bxg5+
        • 2.Qf6#
      • 1...Bf4
        • 2.Qe4#
        • 2.Qd5#
        • 2.Qxf4#
      • 1...Bc6
        • 2.Qf6#
      • 1...Bg6
        • 2.Qf6#
      • 1...Bc5+!
    • 1.Qh2+?
      • 1...Bf4
        • 2.Qxf4#
        • 2.g6#
      • 1...Kf5!
    • 1.Qxe3+?
      • 1...Kf5
        • 2.Qe4#
        • 2.Qe6#
      • 1...Sxe3!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qf6#
      • 1...Bc5+
        • 2.Qxc5#
      • 1...Bxf2
        • 2.g6#
      • 1...Bf4
        • 2.Qc5#
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);N_PINB(b)
      • Threat
        • QAB1(B)
      • Vars
        • B(b);N_GUARD::R(G)+P(F)
        • B(b);N_GUARD::QAB1(B),XB(b)
      • Refutation
        • B(b);CHECK
    • Try
      • Q(B);N_PINB(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);CHECK,P_SPINB(b),XP(F)::QAB1(B)
        • B(e);::QAB1(B)
      • Refutation
        • B(b);CHECK
    • Try
      • Q(B);CHECK,N_PINB(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK,XB(b)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • Q(B);N_PINB(b)
    • Threat
      • QAB1(B)
    • Vars
      • B(b);CHECK,OGATE::QAR2(B),XB(b)
      • B(b);N_GUARD,XQ(B)::R(G)+P(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).