MESON Chess Problem Database

Problem Display
PID: 151239 (5B2/2pppQ2/K1k3PR/2p5/2p5/2n2N2/8/8 w - - 0 1)

Subotic, Miroslav

The Problemist Supplement, 2013

5B2/2pppQ2/K1k3PR/2p5/2p5/2n2N2/8/8

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.g7#
    • 1...d5
      • 2.Qe6#
    • 1...e5
      • 2.Sxe5#
  • Tries
    • 1.Qe6+?
      • 1...d6
        • 2.Se5#
      • 1...dxe6!
    • 1.g7+?
      • 1...d6
        • 2.Se5#
      • 1...e6!
  • Keys
    • 1.Rh5!
      • 1...Kd6
        • 2.Qf6#
      • 1...d5
        • 2.Qe6#
      • 1...Sb1
        • 2.Qd5#
      • 1...Sd1
        • 2.Qd5#
      • 1...Sa2
        • 2.Qd5#
      • 1...Se2
        • 2.Qd5#
      • 1...Sa4
        • 2.Qd5#
      • 1...Se4
        • 2.Qd5#
      • 1...Sb5
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...d6
        • 2.Qe8#
      • 1...e5
        • 2.Sxe5#
      • 1...e6
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT,P_SPINP(g)::R(D)+P(C)
    • P(f);N_GUARD::QAR2(E)
    • P(g);::S(A),XP(g)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • P(f);P_SPINP(f)::S(A)
      • Refutation
        • P(f);XQ(E)
    • Try
      • P(C);CHECK
      • Vars
        • P(f);P_SPINP(f)::S(A)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • R(D);
    • Vars
      • K(d);P-FLIGHT,P_SPINP(g)::QAR2(E)
      • P(f);N_GUARD::QAR2(E)
      • S(a);N_GUARD::QAB1(E)
      • S(a);N_GUARD::QAB1(E),XS(a)
      • P(f);OGATEB,SBLOCK::QAB(E)
      • P(g);::S(A),XP(g)
      • P(g);::R1(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).