MESON Chess Problem Database

Problem Display
PID: 140023 (1q1r4/n1b5/pp2Pp2/5Q2/1p1kNBR1/1PN1p3/5pr1/K4B2 w - - 0 1)

Parthasarathy, Dr Mukkur

Die Schwalbe, 1966

1q1r4/n1b5/pp2Pp2/5Q2/1p1kNBR1/1PN1p3/5pr1/K4B2

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rd6
      • 2.Qxf6#
    • 1...Rc8
      • 2.Qd5#
    • 1...Re8
      • 2.Qd5#
    • 1...Rf8
      • 2.Qd5#
    • 1...Rg8
      • 2.Qd5#
    • 1...Rh8
      • 2.Qd5#
    • 1...Bd6
      • 2.Qd5#
    • 1...b5
      • 2.Qc5#
  • Tries
    • 1.Bd6?
      • threat
        • 2.Qd5#
        • 2.Qxf6#
      • 1...Rxd6
        • 2.Qxf6#
      • 1...Bxd6
        • 2.Qd5#
      • 1...bxc3
        • 2.Sg3#
      • 1...Qb7
        • 2.Qxf6#
      • 1...Qa8
        • 2.Qxf6#
      • 1...Rf8
        • 2.Qd5#
      • 1...Sc6
        • 2.Qd5#
      • 1...e2!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Se2#
      • 1...Kxc3
        • 2.Qd3#
      • 1...bxc3
        • 2.Bg3#
      • 1...e2
        • 2.Sxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(l);N_GUARD::QAR1(H),XR(l)
    • R(l);S_CUTB(j)::QAB(H),XP(h)
    • R(l);N_GUARD::QAR1(H)
    • B(j);S_CUTR(l)::QAR1(H)
    • P(g);N_GUARD::QAB1(H)
  • Tries
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(l);XB(F)::QAB(H),XP(h)
        • B(j);XB(F)::QAR1(H)
        • P(d);SBLOCK,XS(D)::R(G)+S(E)
        • Q(k);::QAB(H),XP(h)
        • R(l);::QAR1(H)
        • S(i);::QAR1(H)
      • Refutation
        • P(c);
  • Actual
    • S(E);
    • Threat
      • S(D)
    • Vars
      • K(e);S_FLIGHT,XS(D)::QAR1(H)
      • P(d);SBLOCK,XS(D)::R(G)+B(F)
      • P(c);::S(D),XP(c)
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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).