MESON Chess Problem Database

Problem Display
PID: 11213 (4R3/5n2/4r1p1/2Ppk3/5NPp/1PN2R2/7Q/1B2Kn2 w - - 0 1)

Rudd, Charles Dember

Chess, 1937

4R3/5n2/4r1p1/2Ppk3/5NPp/1PN2R2/7Q/1B2Kn2

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4+
      • 2.Sxe6#
    • 1...Kf6+
      • 2.Sxe6#
    • 1...Sd2
      • 2.Sfe2#
      • 2.Sxe6#
    • 1...Se3
      • 2.Sfe2#
      • 2.Sxe6#
    • 1...d4
      • 2.Sd3#
      • 2.Sxg6#
      • 2.Rxe6#
  • Tries
    • 1.Qe2+?
      • 1...Kd4
        • 2.Sxe6#
      • 1...Kf6
        • 2.Sxe6#
      • 1...Se3!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Scxd5#
      • 1...Kd4+
        • 2.Se4#
      • 1...Kf6+
        • 2.Se4#
      • 1...d4
        • 2.Sd3#
        • 2.Sxg6#
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);CHECK,N_SPINR(e),S_FLIGHT::S(G),XR(e)
    • K(d);CHECK,N_SPINR(e),S_FLIGHT::R(F)+S(G),XR(e)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);N_SPINR(e),P_PINQ(C),S_FLIGHT::S(G),XR(e)
        • K(d);N_SPINR(e),P_PINQ(C),S_FLIGHT::R(F)+S(G),XR(e)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(C);
    • Threat
      • QAB(C)+S(E),XP(c)
    • Vars
      • K(d);CHECK,N_SPINR(e),S_FLIGHT::QAB(C)+S(E)
      • K(d);CHECK,N_SPINR(e),S_FLIGHT::QAB(C)+S(E),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).