MESON Chess Problem Database

Problem Display
PID: 70160 (Bb1r3r/pQ1b2p1/P1N1k1Pp/5nR1/2PpN3/3Kp1B1/8/8 w - - 0 1)

Luke, R

Chess, 1950

Bb1r3r/pQ1b2p1/P1N1k1Pp/5nR1/2PpN3/3Kp1B1/8/8

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc6
      • 2.Qf7#
    • 1...Bc8
      • 2.Qf7#
    • 1...Be8
      • 2.Sxd8#
    • 1...Sd6
      • 2.Re5#
    • 1...Se7
      • 2.Sxd4#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Qd5#
        • 2.Qxf5#
      • 1...Sxg3
        • 2.Qd5#
      • 1...hxg5
        • 2.Qd5#
      • 1...Bc8
        • 2.Qxf5#
      • 1...Be8
        • 2.Qxf5#
      • 1...Rdf8
        • 2.Qd5#
      • 1...Rhf8
        • 2.Qd5#
      • 1...Be5
        • 2.Qd5#
        • 2.Qxe5#
      • 1...Sh4
        • 2.Qd5#
      • 1...Sd6
        • 2.Re5#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Se7
        • 2.Sxd4#
      • 1...Bxc6!
  • Keys
    • 1.c5!
      • threat
        • 2.Qb3#
      • 1...Kd5
        • 2.Qb3#
      • 1...Bxc6
        • 2.Qf7#
      • 1...Bc8
        • 2.Qf7#
      • 1...Be8
        • 2.Sxd8#
      • 1...Sd6
        • 2.Re5#
      • 1...Se7
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(g);OGATE,XS(G)::QAB1(I)
    • B(g);OGATE::QAB1(I)
    • B(g);S_CUTR(k)::S(G),XR(j)
    • S(c);OGATE::R1(E)
    • S(c);N_GUARD,SBLOCK::S(G),XP(b)
  • Tries
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XB(B)::QAB1(I)
        • P(e);XR(E)::QAB1(I)
        • B(g);::QAB1(I),XS(c)
        • R(j);::QAB1(I)
        • R(k);::QAB1(I)
        • S(c);::QAB1(I)
        • S(c);N_GUARD,SBLOCK::S(G),XP(b)
      • Refutation
        • B(g);XS(G)
  • Actual
    • P(C);
    • Threat
      • QAB(I)
    • Vars
      • K(d);P_SPINS(c),S_FLIGHT::QAB(I)
      • B(g);OGATE,XS(G)::QAB1(I)
      • B(g);OGATE::QAB1(I)
      • B(g);S_CUTR(k)::S(G),XR(j)
      • S(c);OGATE::R1(E)
      • S(c);N_GUARD,SBLOCK::S(G),XP(b)
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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).