MESON Chess Problem Database

Problem Display
PID: 143913 (5R2/2pN2q1/4k1P1/2PRp3/2KP2pQ/8/8/8 w - - 0 1)

Shire, David J

British Chess Magazine, 1992

5R2/2pN2q1/4k1P1/2PRp3/2KP2pQ/8/8/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Qxf6#
    • 1...Qh6
      • 2.Qf6#
    • 1...Qxd7
      • 2.Rxe5#
      • 2.Qf6#
    • 1...Qe7
      • 2.Qxg4#
    • 1...Qh7
      • 2.Qf6#
    • 1...Qg8
      • 2.Qf6#
    • 1...c6
      • 2.Rd6#
  • Tries
    • 1.Rf6+?
      • 1...Qxf6
        • 2.Qxf6#
      • 1...Ke7!
    • 1.Rf7?
      • threat
        • 2.Qe7#
        • 2.Qxg4#
      • 1...Qxg6
        • 2.Qe7#
      • 1...Qf6
        • 2.Qxf6#
      • 1...Qf8
        • 2.Sxf8#
        • 2.Rxe5#
        • 2.Qf6#
        • 2.Qxg4#
      • 1...g3
        • 2.Qe7#
        • 2.Qh3#
        • 2.Qg4#
      • 1...Qxf7!
    • 1.Re8+?
      • 1...Qe7
        • 2.Qf6#
        • 2.Qxg4#
      • 1...Kf5!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Rxe5#
      • 1...Kf5
        • 2.Qxg4#
      • 1...Ke7
        • 2.Re8#
      • 1...Qxf6
        • 2.Qxf6#
      • 1...exd4
        • 2.Qe1#
      • 1...e4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(e);N_GUARD::QAR1(C),XQ(e)
    • Q(e);N_GUARD::QAR1(C)
    • Q(e);SBLOCK::QAB(C),XP(a)
    • P(d);N_GUARD::R1(E)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • Q(e);OGATE,XR(H)::QAR1(C),XQ(e)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);XP(F)::QAR1(C)
        • Q(e);N_GUARD::QAR1(C),XQ(e)
      • Refutation
        • Q(e);XR(H)
    • Try
      • R(H);CHECK
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • R1(E),XP(b)
    • Vars
      • K(c);P_SPINP(b),S_FLIGHT::QAB1(C),XP(a)
      • K(c);P-FLIGHT::R1(H)
      • Q(e);OGATE,XS(G)::QAR1(C),XQ(e)
      • P(b);OGATEB,XP(B)::QAR(C)
      • P(b);::R1(E)
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).