MESON Chess Problem Database

Problem Display
PID: 21127 (6b1/2p4r/Q1R3N1/2Bk3n/1P2ppN1/7r/3n3b/3K4 w - - 0 1)

Blake, Percy Francis

2nd Prize, Brisbane Courier, 1918

6b1/2p4r/Q1R3N1/2Bk3n/1P2ppN1/7r/3n3b/3K4

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rh6
      • 2.Se7#
    • 1...Re7
      • 2.Sxe7#
    • 1...Rh8
      • 2.Se7#
    • 1...Bf7
      • 2.Se7#
    • 1...Sg3
      • 2.Sf6#
      • 2.Sxf4#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sg7
      • 2.Sf6#
      • 2.Se7#
    • 1...f3
      • 2.Se3#
  • Tries
    • 1.Re6?
      • threat
        • 2.Re5#
      • 1...Re7
        • 2.Sxe7#
      • 1...Sf3
        • 2.Qa2#
      • 1...Sc4
        • 2.Qc6#
      • 1...f3
        • 2.Se3#
      • 1...Bxe6!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Rf5#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...e3
        • 2.Qd3#
      • 1...Re7
        • 2.Sxe7#
      • 1...Rf7
        • 2.Qe6#
      • 1...Be6
        • 2.Qxe6#
      • 1...Sf3
        • 2.Qa2#
      • 1...Sc4
        • 2.Qc6#
      • 1...Sg3
        • 2.Sxf4#
      • 1...Sg7
        • 2.Se7#
      • 1...f3
        • 2.Se3#
      • 1...c6
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • R(i);N_GUARD::S(G)
    • R(i);N_GUARD::S(G),XR(i)
    • B(j);S_CUTR(i)::S(G)
    • S(g);N_GUARD::S(C),XS(g)
    • P(e);N_GUARD,S_CUTR(c)::S(C)
  • Tries
    • Try
      • R(F);
      • Threat
        • R1(F)
      • Vars
        • R(i);N_GUARD::S(G),XR(i)
        • S(a);N_GUARD,S_CUTR(c)::QAB(E)
        • S(a);SBLOCK::QAB1(E)
        • P(e);N_GUARD,S_CUTR(c)::S(C)
      • Refutation
        • B(j);XR(F)
  • Actual
    • R(F);
    • Threat
      • R(F)
    • Vars
      • S(g);XR(F)::S(C),XS(g)
      • P(d);N_GUARD,S_CUTR(c)::QAR2(E)
      • R(i);N_GUARD::S(G),XR(i)
      • R(i);S_CUTB(j)::QAB1(E)
      • B(j);N_GUARD::QAB1(E),XB(j)
      • S(a);N_GUARD,S_CUTR(c)::QAB(E)
      • S(a);SBLOCK::QAB1(E)
      • S(g);N_GUARD,S_CUTB(b)::S(G),XP(e)
      • S(g);S_CUTR(i)::S(G)
      • P(e);N_GUARD,S_CUTR(c)::S(C)
      • P(h);N_GUARD::R1(F)
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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).