MESON Chess Problem Database

Problem Display
PID: 181066 (7q/b7/3Q3p/2p1NP2/2N2k1B/3B3b/K5P1/5n2 w - - 0 1)

Dedrle, Frantisek

Das neue illustrierte Blatt, 1904

7q/b7/3Q3p/2p1NP2/2N2k1B/3B3b/K5P1/5n2

#2

8 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa8
      • 2.Qxh6#
    • 1...Qb8
      • 2.Qxh6#
    • 1...Qc8
      • 2.Qxh6#
    • 1...Qe8
      • 2.Qxh6#
    • 1...Bg4
      • 2.Sg6#
    • 1...Sd2
      • 2.g3#
    • 1...Sh2
      • 2.g3#
    • 1...Se3
      • 2.g3#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Qf3#
        • 2.Qe4#
      • 1...Qxe5
        • 2.Qf3#
      • 1...Bxf5
        • 2.Qf3#
      • 1...Qa8
        • 2.Qxh6#
      • 1...Bg4
        • 2.Sg6#
        • 2.Qe4#
      • 1...Sd2
        • 2.g3#
      • 1...Sh2
        • 2.Qe4#
        • 2.g3#
      • 1...Sg3
        • 2.Qf3#
      • 1...Bxg2!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sd5#
      • 1...Qg8+
        • 2.S5c4#
      • 1...Kxe3
        • 2.Sc4#
      • 1...Qxe5
        • 2.Qxh6#
      • 1...Bxg2
        • 2.Sxg2#
      • 1...Sxe3
        • 2.g3#
      • 1...Qa8
        • 2.S5c4#
        • 2.S5g4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(g);N_GUARD::QAB(H),XP(e)
    • B(b);SBLOCK::QAB(H)+S(F),DCHECK
    • S(a);N_GUARD::P(B)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);XS(F)::QAR1(H)
        • B(b);XP(G)::QAR1(H)
        • Q(g);N_GUARD::QAB(H),XP(e)
        • S(a);N_GUARD::P(B)
        • S(a);::QAR1(H)
      • Refutation
        • B(b);XP(B)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • Q(g);CHECK,N_GUARD::QAB(H)+S(F)
      • K(c);S_FLIGHT,XS(D)::S(F)
      • Q(g);N_GUARD,P_SPINQ(g),SBLOCK,XS(F)::QAB(H),XP(e)
      • B(b);XP(B)::S(D),XB(b)
      • S(a);N_GUARD,SBLOCK,XS(D)::P(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).