MESON Chess Problem Database

Problem Display
PID: 50352 (bb1R4/B1n1N2p/Q1p3p1/2p1k1P1/1p3NP1/2n1pK2/8/3R4 w - - 0 1)

Handloser, Ralf Chris

5th HM., idee & form, 2002-2003

bb1R4/B1n1N2p/Q1p3p1/2p1k1P1/1p3NP1/2n1pK2/8/3R4

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Sd3#
    • 1...c4
      • 2.Bd4#
    • 1...h5
      • 2.Sexg6#
    • 1...h6
      • 2.Sexg6#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Sd3#
      • 1...S3d5
        • 2.Qe4#
      • 1...S7d5!
    • 1.Qc8?
      • threat
        • 2.Sd3#
      • 1...S7d5
        • 2.Qe6#
      • 1...c4
        • 2.Bd4#
      • 1...S3d5!
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Sd3#
      • 1...Bxc6+
        • 2.Sxc6#
      • 1...S3d5
        • 2.Qd6#
      • 1...S7d5
        • 2.Qe6#
      • 1...c4
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(h);SBLOCK::S(C)
    • P(d);OGATE::B(G)
    • P(i);N_GUARD::S(H),XP(g)
  • Tries
    • Try
      • Q(F);
      • Threat
        • S(C)
      • Vars
        • S(a);N_GUARD::QAR1(F)
      • Refutation
        • S(h);
    • Try
      • Q(F);
      • Threat
        • S(C)
      • Vars
        • S(h);N_GUARD::QAR1(F)
        • P(d);OGATE::B(G)
      • Refutation
        • S(a);
  • Actual
    • Q(F);P_SPINQ(F),XP(f)
    • Threat
      • S(C)
    • Vars
      • B(j);CHECK,XQ(F)::S(H),XB(j)
      • S(a);N_PINQ(F)::QAB1(F)
      • S(h);N_PINQ(F)::QAR1(F)
      • P(d);OGATE::B(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).