MESON Chess Problem Database

Problem Display
PID: 249621 (6K1/8/4p2p/4p3/4N3/4Pk1B/R7/2b1Q3 w - - 0 1)

Decker, Adolfph L

Deutsche Schachzeitung, 1899

6K1/8/4p2p/4p3/4N3/4Pk1B/R7/2b1Q3

#2

6 + 5

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Sd2#
    • 1...Bd2
      • 2.Sxd2#
    • 1...Ba3
      • 2.Sd2#
    • 1...h5
      • 2.Sg5#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Rf2#
        • 2.Qf2#
        • 2.Qg3#
        • 2.Qe2#
      • 1...Bxe3
        • 2.Qg3#
      • 1...Bb2
        • 2.Qf2#
      • 1...Bd2
        • 2.Qf2#
      • 1...exf5!
  • Keys
    • 1.Ra3!
      • 1...Kxe4
        • 2.Qh1#
      • 1...Bxa3
        • 2.Sd2#
      • 1...Bxe3
        • 2.Qxe3#
      • 1...Bb2
        • 2.Sd2#
      • 1...Bd2
        • 2.Sxd2#
      • 1...h5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(E)
    • B(a);N_GUARD::S(E),XB(a)
    • P(e);N_GUARD::S(E)
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(4)
      • Vars
        • B(a);SBLOCK,XP(C)::QAR1(A)
        • B(a);::QAR1(A)
      • Refutation
        • P(d);XB(D)
  • Actual
    • R(B);
    • Vars
      • K(b);S_FLIGHT,XS(E)::QAB(A)
      • B(a);N_GUARD,XR(B)::S(E)
      • B(a);OGATE,P_SPINB(a),XP(C)::QAR1(A),XB(a)
      • B(a);N_GUARD::S(E)
      • B(a);N_GUARD::S(E),XB(a)
      • P(e);N_GUARD::S(E)
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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).