MESON Chess Problem Database

Problem Display
PID: 71362 (K3NNB1/2p5/1pkn4/1pn1P3/1P1B4/5R2/6R1/2b4Q w - - 0 1)

Wiedenhoff, Claude

Sp. Prize, Urania, 1980

K3NNB1/2p5/1pkn4/1pn1P3/1P1B4/5R2/6R1/2b4Q

#2

10 + 7

5503 ISC 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Rc2?
      • threat
        • 2.Rf6#
      • 1...Sf5
        • 2.Rf1#
        • 2.Rff2#
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rfc3#
        • 2.Rd3#
        • 2.Re3#
        • 2.Rg3#
        • 2.Rh3#
        • 2.Rf4#
        • 2.Rxf5#
      • 1...Bf4!
    • 1.Rg6?
      • threat
        • 2.Rc3#
      • 1...Sd3
        • 2.Rf1#
        • 2.Rf2#
        • 2.Rxd3#
        • 2.Re3#
        • 2.Rfg3#
        • 2.Rh3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Rff6#
        • 2.Rf7#
      • 1...Be3!
    • 1.Rf7?
      • threat
        • 2.Rxc7#
      • 1...Sxf7
        • 2.Rc2#
        • 2.Rg6#
      • 1...Sxe8
        • 2.Rc2#
        • 2.Rg6#
      • 1...Sa6
        • 2.Rc2#
        • 2.Rg6#
      • 1...Se6
        • 2.Rc2#
      • 1...Sd7
        • 2.Rc2#
        • 2.Rg6#
      • 1...Kd5!
  • Keys
    • 1.Rg7!
      • threat
        • 2.Rxc7#
      • 1...Sxe8
        • 2.Rc3#
        • 2.Rf6#
      • 1...Se6
        • 2.Rc3#
      • 1...Sf7
        • 2.Rc3#
        • 2.Rf6#
      • 1...Sa6
        • 2.Rc3#
        • 2.Rf6#
      • 1...Sd7
        • 2.Rc3#
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);P_PINS(c)
      • Threat
        • QAB(A)+R(C)
      • Refutation
        • B(a);
    • Try
      • R(B);P_PINS(f)
      • Threat
        • QAB(A)+R(C)
      • Refutation
        • B(a);
    • Try
      • R(C);
      • Threat
        • R1(C),XP(g)
      • Vars
        • S(c);::QAB(A)+R(B),DCHECK
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • R(B);
    • Threat
      • R1(B),XP(g)
    • Vars
      • S(c);::QAB(A)+R(C),DCHECK
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).