MESON Chess Problem Database

Problem Display
PID: 150016 (8/n2K4/2P5/bkP2R2/1N6/3P4/Q1N5/3b4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Source?, 0000

8/n2K4/2P5/bkP2R2/1N6/3P4/Q1N5/3b4

#2

8 + 4

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb4
      • 2.Sd4#
    • 1...Bb6
      • 2.Qa6#
    • 1...Bc7
      • 2.Qa6#
    • 1...Bd8
      • 2.Qa6#
  • Tries
    • 1.Sa6?
      • threat
        • 2.Qc4#
      • 1...Be1
        • 2.Sd4#
        • 2.Sc7#
      • 1...Bd2
        • 2.Sd4#
        • 2.Sc7#
      • 1...Bc3
        • 2.Sc7#
      • 1...Bb4
        • 2.Sd4#
        • 2.Sc7#
      • 1...Bb6
        • 2.Sd4#
      • 1...Bc7
        • 2.Sd4#
        • 2.Sxc7#
      • 1...Bd8
        • 2.Sd4#
      • 1...Kxa6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qc4#
      • 1...Kxc5
        • 2.Qc4#
      • 1...Ka6
        • 2.Sc7#
      • 1...Be1
        • 2.Sc7#
      • 1...Bd2
        • 2.Sc7#
      • 1...Bc3
        • 2.Sxc3#
        • 2.Sc7#
      • 1...Bb4
        • 2.Sc7#
      • 1...Bb6
        • 2.Sc3#
      • 1...Bc7
        • 2.Sc3#
        • 2.Sxc7#
      • 1...Bd8
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK,XS(D)::S(B)
    • B(b);OGATE::QAB1(A)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(A)
      • Vars
        • B(b);N_GUARD::S(D)
        • B(b);::S(B)
      • Refutation
        • K(c);P_SPINB(b),S_FLIGHT,XS(D)
  • Actual
    • S(D);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);P-FLIGHT,XP(E)::QAR1(A)
      • K(c);P_SPINB(b),S_FLIGHT::S(D)
      • B(b);N_GUARD::S(D)
HTML5 logo

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).