MESON Chess Problem Database

Problem Display
PID: 224369 (1B5K/bN3B2/5p2/3n2Np/1p1k3r/1R2p3/2P1Q1p1/4qb2 w - - 0 1)

Rizzetti, Dante Hugo

US Problem Bulletin, 1965

1B5K/bN3B2/5p2/3n2Np/1p1k3r/1R2p3/2P1Q1p1/4qb2

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sf3#
    • 1...Sc3
      • 2.Rxb4#
    • 1...Sb6
      • 2.Rd3#
    • 1...Se7
      • 2.Rd3#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxd5#
      • 1...Kc4
        • 2.Qxd5#
      • 1...Re4
        • 2.Qxe4#
      • 1...Bc4
        • 2.Se6#
      • 1...Sc3
        • 2.Qxf6#
      • 1...Sf4
        • 2.Qe4#
      • 1...Sb6
        • 2.Qxf6#
      • 1...Sc7
        • 2.Qxf6#
      • 1...Se7
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(g);SBLOCK::S(D)
    • S(h);N_GUARD,SBLOCK,S_CUTQ(a)::R(C),XP(e)
    • S(h);::R1(C)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XS(h)
    • Vars
      • K(f);P-FLIGHT,P_SPINS(h)::QAB1(B),XS(h)
      • R(g);N_GUARD::QAR1(B),XR(g)
      • B(b);SBLOCK::S(D)
      • S(h);N_GUARD::QAB(B),XP(j)
      • S(h);S_CUTR(g)::QAR1(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).