MESON Chess Problem Database

Problem Display
PID: 129777 (8/pQ6/1p1Kp3/8/N2k1P2/1p6/2bNnPp1/5B2 w - - 0 1)

Ferber, Eugene

Deutsche Schachzeitung, 1905

8/pQ6/1p1Kp3/8/N2k1P2/1p6/2bNnPp1/5B2

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...Sc1
      • 2.Sf3#
    • 1...Sc3
      • 2.Sf3#
    • 1...Sg3
      • 2.Sf3#
    • 1...Sxf4
      • 2.Sf3#
    • 1...e5
      • 2.Qd5#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Qc4#
      • 1...Kd3
        • 2.Qc3#
      • 1...Bd3
        • 2.Sxb3#
        • 2.Sf3#
      • 1...b5!
    • 1.Qxb6+?
      • 1...Kd3
        • 2.Qe3#
      • 1...axb6!
    • 1.Qg7+?
      • 1...Kd3
        • 2.Qc3#
      • 1...e5!
  • Keys
    • 1.Ke7!
      • threat
        • 2.Qd7#
      • 1...Kd3
        • 2.Qd7#
      • 1...Sxf4
        • 2.Sf3#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sc3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAR1(G)
    • B(a);N_GUARD::QAR1(G),XB(a)
    • S(b);::S(B)
    • S(b);XP(E)::S(B)
    • P(g);N_GUARD::QAR1(G)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);P-FLIGHT,P_SPINS(b)::QAR1(G)
      • Refutation
        • P(f);
    • Try
      • Q(G);CHECK,XP(f)
      • Vars
        • K(e);OGATE,P-FLIGHT,P_SPINS(b)::QAR1(G)
      • Refutation
        • P(h);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT,P_SPINS(b)::QAR1(G)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • QAR(G)
    • Vars
      • K(e);P-FLIGHT,P_SPINS(b)::QAR(G)
      • S(b);XP(E)::S(B)
      • B(a);N_GUARD::QAR1(G),XB(a)
      • S(b);::S(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).