MESON Chess Problem Database

Problem Display
PID: 129834 (3B4/3kNB2/1p6/1p6/1Q6/5n2/1p6/bK6 w - - 0 1)

Sulc, Jindrich

Ruch, 1947

3B4/3kNB2/1p6/1p6/1Q6/5n2/1p6/bK6

#2

5 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd8
      • 2.Qd6#
    • 1...Se1
      • 2.Qd4#
    • 1...Sg1
      • 2.Qd2#
      • 2.Qd4#
    • 1...Sd2+
      • 2.Qxd2#
    • 1...Sh2
      • 2.Qd2#
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sh4
      • 2.Qd2#
      • 2.Qd4#
    • 1...Se5
      • 2.Qd4#
    • 1...Sg5
      • 2.Qd2#
      • 2.Qd4#
  • Tries
    • 1.Qd2+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sxd2+!
    • 1.Qc3?
      • threat
        • 2.Qc7#
      • 1...Sd2+
        • 2.Qxd2#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxd8!
    • 1.Qxb5+?
      • 1...Kd6
        • 2.Sf5#
        • 2.Sc8#
        • 2.Qd5#
      • 1...Kxd8!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qc7#
      • 1...Sd2+
        • 2.Qxd2#
      • 1...Kxd8
        • 2.Qd6#
      • 1...Se5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(f);P-FLIGHT,XB(E)::QAR2(B)
    • S(c);N_GUARD::QAR(B)
    • S(c);CHECK,N_GUARD::QAR(B),XS(c)
    • S(c);N_GUARD::QAR(B),XS(c)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR(B),XS(c)
      • Refutation
        • S(c);CHECK,XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • S(c);CHECK,N_GUARD::QAR(B),XS(c)
        • K(f);P-FLIGHT::QAB1(B)
      • Refutation
        • K(f);P-FLIGHT,XB(E)
    • Try
      • Q(B);CHECK,XP(d)
      • Refutation
        • K(f);P-FLIGHT,XB(E)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • S(c);CHECK,N_GUARD::QAR(B),XS(c)
      • K(f);P-FLIGHT,XB(E)::QAR2(B)
      • S(c);N_GUARD::QAR(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).