MESON Chess Problem Database

Problem Display
PID: 231782 (8/B5N1/8/4n3/4k2P/2PR4/5P2/1Q5K w - - 0 1)

von Wardener, Friedrich Freiherr

Deutsche Schachzeitung, 1900

8/B5N1/8/4n3/4k2P/2PR4/5P2/1Q5K

#2

8 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rd2+?
      • 1...Kf3
        • 2.Qf5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Sd3!
    • 1.Re3+?
      • 1...Kf4
        • 2.Qe4#
        • 2.Qf5#
      • 1...Kd5!
    • 1.Qb5?
      • 1...Sxd3
        • 2.Qf5#
      • 1...Sc4
        • 2.Qf5#
      • 1...Sf3
        • 2.Qf5#
      • 1...Sg4
        • 2.Qf5#
      • 1...Sc6
        • 2.Qf5#
      • 1...Sg6
        • 2.Qf5#
      • 1...Sd7
        • 2.Qf5#
      • 1...Sf7
        • 2.Qf5#
      • 1...Kf4!
  • Keys
    • 1.Bb8!
      • 1...Kf4
        • 2.Qb4#
      • 1...Sxd3
        • 2.Qb7#
      • 1...Sf3
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd4#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Sc4
        • 2.f3#
      • 1...Sg4
        • 2.f3#
      • 1...Sc6
        • 2.f3#
      • 1...Sg6
        • 2.f3#
      • 1...Sd7
        • 2.f3#
      • 1...Sf7
        • 2.f3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(A)
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • R(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(b);OGATE,SBLOCK,XR(E)::QAB1(A)
        • S(b);OGATE::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(G);
    • Vars
      • K(a);P-FLIGHT,P_SPINS(b)::QAR(A)
      • S(b);N_GUARD,P_SPINS(b),SBLOCK,XR(E)::QAB(A)
      • S(b);N_GUARD::P(C)
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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).