MESON Chess Problem Database

Problem Display
PID: 51263 (8/3B4/pp6/b2N2Q1/1Pk3P1/Pp1r4/1B1pP3/3Kn3 w - - 0 1)

Russ, Colin Albert Harry

Manchester Guardian, 1955

8/3B4/pp6/b2N2Q1/1Pk3P1/Pp1r4/1B1pP3/3Kn3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sxe3#
    • 1...Rd4
      • 2.Se3#
    • 1...Bxb4
      • 2.Sxb6#
  • Tries
    • 1.Qf4+?
      • 1...Rd4
        • 2.Se3#
        • 2.Qxd4#
      • 1...Kxd5!
    • 1.exd3+?
      • 1...Sxd3
        • 2.Se3#
      • 1...Kxd3!
  • Keys
    • 1.Qe3!
      • 1...Kxd5
        • 2.Qe6#
      • 1...Rxe3
        • 2.Sxe3#
      • 1...Rxd5
        • 2.Qc3#
      • 1...Bxb4
        • 2.Sxb6#
      • 1...Rc3
        • 2.Qe4#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Sc2
        • 2.Qxd3#
      • 1...Sg2
        • 2.Qxd3#
      • 1...Sf3
        • 2.Qxd3#
      • 1...b5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD::S(G),XR(d)
    • R(d);N_GUARD::S(G)
    • B(f);N_GUARD,XP(E)::S(G),XP(h)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • K(e);S_FLIGHT,XS(G)
    • Try
      • P(C);CHECK,XR(d)
      • Vars
        • S(a);SBLOCK,XP(C)::S(G)
      • Refutation
        • K(e);S_FLIGHT,XP(C)
  • Actual
    • Q(H);
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(G)::QAB1(H)
      • R(d);XQ(H)::S(G),XR(d)
      • R(d);OGATE,SBLOCK,XS(G)::QAR1(H)
      • B(f);N_GUARD,XP(E)::S(G),XP(h)
      • R(d);N_GUARD::QAR2(H)
      • R(d);N_GUARD::QAR1(H),XR(d)
      • S(a);N_GUARD::QAB1(H),XR(d)
      • P(h);N_GUARD::QAR1(H)
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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).