MESON Chess Problem Database

Problem Display
PID: 59348 (8/2R3p1/bP1kp1n1/1pr3QK/NB1b1p2/qp6/8/8 w - - 0 1)

Jerrard, Ernest Haslam Harvey

1st Comm., Brisbane Courier, 1922

8/2R3p1/bP1kp1n1/1pr3QK/NB1b1p2/qp6/8/8

#2

6 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Qxc5#
    • 1...Bb2
      • 2.Qxc5#
    • 1...Bc3
      • 2.Qxc5#
    • 1...Be5
      • 2.Qd8#
    • 1...Bf6
      • 2.Qxc5#
  • Tries
    • 1.Sxc5?
      • threat
        • 2.Se4#
        • 2.Sb7#
      • 1...Qxb4
        • 2.Se4#
      • 1...Bxc5
        • 2.Qxc5#
      • 1...Be5
        • 2.Qd8#
      • 1...e5
        • 2.Qd8#
      • 1...Bb7
        • 2.Se4#
        • 2.Sxb7#
      • 1...Se5!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Se4#
      • 1...Bxc3
        • 2.Qxc5#
      • 1...e5
        • 2.Qxg6#
      • 1...Be5
        • 2.Qd8#
      • 1...Bb7
        • 2.Sxb5#
      • 1...Se5
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(c);N_GUARD::QAB1(C),XR(f)
    • B(c);N_PINQ(C),SBLOCK::QAR2(C)
  • Tries
    • Try
      • S(A);N_SPINQ(C),XR(f)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);XB(B)::S(A)
        • B(c);OGATE,P_SPINB(c),XS(A)::QAB1(C),XB(c)
        • B(c);SBLOCK::QAR2(C)
        • P(i);SBLOCK::QAR2(C)
      • Refutation
        • S(j);
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • B(c);N_GUARD,XS(A)::QAB1(C),XR(f)
      • P(i);N_PINQ(C),SBLOCK::QAR(C),XS(j)
      • B(c);N_PINQ(C),SBLOCK::QAR2(C)
      • B(g);N_GUARD::S(A),XP(e)
      • S(j);N_PINQ(C),SBLOCK::QAB1(C)
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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).