MESON Chess Problem Database

Problem Display
PID: 120675 (b6B/3n4/6pQ/1BR5/4k2P/r3P2n/5R1K/8 w - - 0 1)

Moore, Charles W

Canadian Chess Chat, 1956

b6B/3n4/6pQ/1BR5/4k2P/r3P2n/5R1K/8

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Qxg6#
    • 1...Sg1
      • 2.Qf4#
    • 1...Sxf2
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Se5
      • 2.Rxe5#
    • 1...Sb6
      • 2.Re5#
    • 1...Sb8
      • 2.Re5#
    • 1...Sf8
      • 2.Re5#
  • Tries
    • 1.Rf4+?
      • 1...Sxf4
        • 2.Qxf4#
      • 1...Kxe3!
    • 1.Rc4+?
      • 1...Kd3
        • 2.Ra4#
        • 2.Rb4#
        • 2.Rg4#
      • 1...Kd5!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qf3#
      • 1...Kxe3
        • 2.Re2#
      • 1...Rxe3
        • 2.Qxa8#
      • 1...Sxf2
        • 2.Qf4#
      • 1...Sxf8
        • 2.Re5#
      • 1...Sg1
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sg5
        • 2.Qf4#
      • 1...Se5
        • 2.Rxe5#
      • 1...Sf6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(a);SBLOCK,XP(C)::QAB(G),XP(d)
    • S(b);N_GUARD::QAR1(G)
    • S(b);N_GUARD,XR(A)::QAR1(G)
    • S(b);N_GUARD::QAR1(G),XS(b)
    • S(e);N_GUARD::R1(F),XS(e)
    • S(e);N_GUARD::R1(F)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • S(b);OGATE,XR(A)::QAR1(G),XS(b)
      • Refutation
        • K(c);P-FLIGHT,XP(C)
    • Try
      • R(F);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XP(C)::R1(A)
      • R(a);N_GUARD,SBLOCK,XP(C)::QAB(G),XB(f)
      • S(b);N_GUARD,XR(A)::QAR1(G)
      • S(e);N_GUARD,XQ(G)::R1(F)
      • S(b);N_GUARD::QAR1(G)
      • S(b);N_GUARD::QAR1(G),XS(b)
      • S(e);N_GUARD::R1(F),XS(e)
      • S(e);N_GUARD::QAR(G)
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).