MESON Chess Problem Database

Problem Display
PID: 82255 (R1N2b1q/B7/k2p4/1R2p3/P4p1r/2K3pr/8/7b w - - 0 1)

Ahues, Herbert Siegfried Oskar

Scacco!, 1983

R1N2b1q/B7/k2p4/1R2p3/P4p1r/2K3pr/8/7b

#2

6 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...g2+
      • 2.Be3#
    • 1...f3
      • 2.Bg1#
      • 2.Bf2#
      • 2.Be3#
      • 2.Bd4#
      • 2.Bc5#
      • 2.Bb8#
    • 1...e4+
      • 2.Bd4#
    • 1...d5
      • 2.Bg1#
      • 2.Bf2#
      • 2.Be3#
      • 2.Bd4#
      • 2.Bc5#
      • 2.Bb8#
  • Tries
    • 1.Ra5+?
      • 1...Kxa5
        • 2.Bb6#
      • 1...Kb7!
  • Keys
    • 1.Kb4!
      • threat
        • 2.Rb6#
      • 1...f3+
        • 2.Bd4#
      • 1...d5+
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(b);CHECK,S_CUTB(a)::R(E)+B(D)
    • P(f);CHECK,S_CUTB(a)::R(E)+B(D)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(g);P-FLIGHT,XR(C)::R(E)+B(D),DCHECK
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • R1(C)
    • Vars
      • P(d);CHECK,S_CUTB(a)::R(E)+B(D)
      • P(h);CHECK,S_CUTB(a)::R(E)+B(D)
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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).