MESON Chess Problem Database

Problem Display
PID: 198775 (7K/8/4qN1k/5p1P/5P2/8/4B3/3Q4 w - - 0 1)

Rovere, Vittorio

L'Italia Scacchistica, 1921

7K/8/4qN1k/5p1P/5P2/8/4B3/3Q4

#2

6 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7
      • 2.Sg8#
    • 1...Qg8+
      • 2.Sxg8#
    • 1...Qe3
      • 2.Sg8#
    • 1...Qe4
      • 2.Sg8#
    • 1...Qa6
      • 2.Sg8#
    • 1...Qb6
      • 2.Sg8#
    • 1...Qc6
      • 2.Sg8#
    • 1...Qd6
      • 2.Sg8#
    • 1...Qe7
      • 2.Sg8#
  • Keys
    • 1.Qd6!
      • threat
        • 2.Sg8#
        • 2.Qf8#
      • 1...Qc8+
        • 2.Sg8#
      • 1...Qg8+
        • 2.Sxg8#
      • 1...Qxf6+
        • 2.Qxf6#
      • 1...Qe8+
        • 2.Sxe8#
        • 2.Sg8#
      • 1...Qxe2
        • 2.Qf8#
      • 1...Qxd6
        • 2.Sg8#
      • 1...Qd7
        • 2.Sxd7#
        • 2.Sg8#
      • 1...Qf7
        • 2.Sg8#
      • 1...Qe5
        • 2.Qf8#
      • 1...Qe7
        • 2.Sg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::S(E)
    • Q(b);CHECK,N_GUARD::S(E),XQ(b)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);CHECK::QAR(A)+S(E),DCHECK
      • Q(b);CHECK::QAR(A)+S(E),DCHECK,XQ(b)
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(E)::QAR2(A),XQ(b)
      • Q(b);XB(B)::QAB(A)
      • Q(b);XQ(A)::S(E)
      • Q(b);::QAR(A)+S(E),DCHECK
      • Q(b);P_PINS(E)::QAB(A)
HTML5 logo

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).