MESON Chess Problem Database

Problem Display
PID: 57353 (1Nb5/1p1p4/1Pr1N1BK/1k3PR1/p1p5/p1B5/5QP1/8 w - - 0 1)

Wainwright, Joseph CJ

2nd Prize, Brisbane Courier, 1920

1Nb5/1p1p4/1Pr1N1BK/1k3PR1/p1p5/p1B5/5QP1/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qxc5#
    • 1...Rxb6
      • 2.Sc7#
      • 2.Qc5#
    • 1...Rd6
      • 2.Sc7#
      • 2.Qc5#
    • 1...Rc7
      • 2.Sxc7#
    • 1...a2
      • 2.Qb2#
  • Tries
    • 1.f6+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...d5!
  • Keys
    • 1.Be8!
      • 1...Rxe6+
        • 2.fxe6#
      • 1...Rxb6
        • 2.Qc5#
        • 2.f6#
      • 1...dxe6
        • 2.fxe6#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rd6
        • 2.Qc5#
      • 1...Rc7
        • 2.Sxc7#
      • 1...a2
        • 2.Qb2#
      • 1...d5
        • 2.Qc5#
      • 1...d6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD::QAR1(A),XR(e)
    • R(e);N_GUARD::S(G),XR(e)
    • P(a);N_GUARD::QAR(A)
  • Tries
    • Try
      • P(D);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAR1(A),XR(e)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • B(H);P_SPINS(G)
    • Vars
      • R(e);CHECK,OGATE,P_SPINP(g),XS(G)::R(E)+P(D),XR(e)
      • P(g);OGATE,P_SPINR(e),XS(G)::R(E)+P(D),XP(g)
      • R(e);N_GUARD,N_PINS(G),P_SPINP(g)::QAR1(A),XR(e)
      • R(e);N_GUARD,P_SPINP(g)::QAR1(A)
      • R(e);N_PINS(G),P_SPINP(g)::S(G),XR(e)
      • P(a);N_GUARD::QAR(A)
      • P(g);P_SPINR(e)::QAR1(A)
      • P(g);N_PINS(G),P_SPINR(e)::S(G)
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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).