MESON Chess Problem Database

Problem Display
PID: 135794 (1B6/7q/Pp1N1r2/1pk1n1R1/1Nbpp3/P3p3/6Qb/nKR5 w - - 0 1)

Rossomakho, Yakov V

Variantim, 2009

1B6/7q/Pp1N1r2/1pk1n1R1/1Nbpp3/P3p3/6Qb/nKR5

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Sb7#
    • 1...Qg6
      • 2.Sb7#
    • 1...Qg8
      • 2.Sxe4#
      • 2.Sb7#
    • 1...Qh3
      • 2.Sxe4#
      • 2.Sb7#
    • 1...Qh4
      • 2.Sb7#
    • 1...Qh5
      • 2.Sxe4#
      • 2.Sb7#
    • 1...Qh6
      • 2.Sxe4#
      • 2.Sb7#
    • 1...Qa7
      • 2.Sxe4#
    • 1...Qb7
      • 2.Sxb7#
    • 1...Qc7
      • 2.Sxe4#
    • 1...Qd7
      • 2.Sxe4#
    • 1...Qe7
      • 2.Sxe4#
    • 1...Qf7
      • 2.Sxe4#
    • 1...Qg7
      • 2.Sxe4#
    • 1...Qh8
      • 2.Sxe4#
      • 2.Sb7#
    • 1...Rf4
      • 2.Rxe5#
    • 1...Rf5
      • 2.Sxe4#
    • 1...Rg6
      • 2.Sxe4#
    • 1...Bg1
      • 2.Rxe5#
  • Keys
    • 1.Qxe4!
      • threat
        • 2.Sd3#
      • 1...Qxe4+
        • 2.Sxe4#
      • 1...Qc7
        • 2.Qd5#
      • 1...Qf5
        • 2.Sb7#
      • 1...Rf5
        • 2.Qd5#
      • 1...Sc2
        • 2.Qc6#
      • 1...d3
        • 2.Sxd3#
        • 2.Qd5#
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • Q(l);N_GUARD,N_SPINS(i)::S(H)
    • Q(l);N_GUARD::S(H)
    • Q(l);N_GUARD::S(H),XP(f)
    • Q(l);N_GUARD::S(H),XQ(l)
    • R(k);S_CUTB(b)::R(F),XS(i)
    • R(k);N_SPINS(i),S_CUTQ(l)::S(H),XP(f)
    • R(k);S_CUTQ(l)::S(H),XP(f)
    • B(b);N_GUARD::R(F),XS(i)
  • Actual
    • Q(C);P_SPINQ(C),XP(f)
    • Threat
      • S(E)
    • Vars
      • Q(l);CHECK,XQ(C)::S(H),XQ(l)
      • Q(l);N_PINQ(C)::QAR1(C)
      • Q(l);N_GUARD,N_SPINS(i)::S(H)
      • R(k);N_PINQ(C),N_SPINS(i)::QAR1(C)
      • S(a);N_PINQ(C),N_SPINB(d)::QAR1(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).