MESON Chess Problem Database

Problem Display
PID: 154778 (b2b1Q2/3r1p2/5p1r/1BPk4/4R3/B4P1p/5n2/1K6 w - - 0 1)

Guidelli, Giorgio

Good Companions (May), 1916

b2b1Q2/3r1p2/5p1r/1BPk4/4R3/B4P1p/5n2/1K6

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qxd6#
    • 1...Ra7
      • 2.Qd6#
    • 1...Rb7
      • 2.Qd6#
    • 1...Rc7
      • 2.Qd6#
    • 1...Bc6
      • 2.Bc4#
    • 1...Bc7
      • 2.Qxa8#
    • 1...Be7
      • 2.Qxf7#
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qxd7#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...Rd6
        • 2.Bc4#
      • 1...Ra7
        • 2.Bc4#
      • 1...Rb7
        • 2.Qc6#
      • 1...Rc7
        • 2.Bc4#
      • 1...Re7
        • 2.Bc4#
      • 1...Bc6
        • 2.Bc4#
      • 1...Bc7
        • 2.Qxa8#
      • 1...Be7
        • 2.Qxf7#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(f);N_GUARD::QAR1(G),XR(f)
    • R(f);N_GUARD::QAR1(G)
    • R(f);N_GUARD,P_PINB(E)::QAR1(G)
    • B(h);SBLOCK::B(E)
    • B(i);OGATE::QAB(G),XB(h)
    • B(i);S_CUTR(f)::QAB(G),XP(g)
  • Actual
    • Q(G);
    • Threat
      • QAR2(G),XR(f)
    • Vars
      • S(a);OGATE,XR(D)::QAB1(G),XS(a)
      • R(f);::B(E)
      • R(f);OGATE,P_PINB(E)::QAB1(G)
      • B(h);SBLOCK::B(E)
      • B(i);OGATE::QAB(G),XB(h)
      • B(i);S_CUTR(f)::QAB(G),XP(g)
      • P(d);N_GUARD::QAR1(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).