MESON Chess Problem Database

Problem Display
PID: 51129 (8/2N2bp1/1p1R2nq/1P3Q2/2k1rb2/P6p/K1P5/1N2B3 w - - 0 1)

Barron, Philip

Manchester Guardian, 1950

8/2N2bp1/1p1R2nq/1P3Q2/2k1rb2/P6p/K1P5/1N2B3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rc6#
    • 1...Re6
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Be8
      • 2.Qd5#
  • Tries
    • 1.Qxf7+?
      • 1...Kc5
        • 2.Qd5#
      • 1...Re6!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Qxe4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Re1
        • 2.Qd3#
      • 1...Re2
        • 2.Qd3#
      • 1...Re3
        • 2.Sd2#
      • 1...Rd4
        • 2.Rc6#
      • 1...Re5
        • 2.Qd3#
      • 1...Re6
        • 2.Qd3#
        • 2.Qd5#
      • 1...Re7
        • 2.Qd3#
      • 1...Re8
        • 2.Qd3#
      • 1...Be3
        • 2.Qf1#
      • 1...Be5
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • R(c);SBLOCK::R(H)
    • R(c);S_CUTB(h)::QAB1(G)
    • B(h);N_GUARD::QAB1(G),XB(h)
    • B(h);N_GUARD::QAB1(G)
  • Tries
    • Try
      • Q(G);CHECK,XB(h)
      • Vars
        • K(b);P-FLIGHT::QAR1(G)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • B(B);
    • Threat
      • QAR2(G),XR(c)
    • Vars
      • B(h);N_GUARD::QAB1(G),XB(h)
      • R(c);OGATE::QAB1(G)
      • R(c);OGATE,P_PINP(D)::QAB1(G)
      • R(c);S_CUTB(d)::S(A)
      • R(c);SBLOCK::R(H)
      • B(d);OGATE::QAB(G)
      • B(d);S_CUTR(c)::QAB(G),XB(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).