MESON Chess Problem Database

Problem Display
PID: 223027 (2N5/1n6/N3p3/3k4/P2p1n2/1P3P2/7Q/K6B w - - 0 1)

Cernovsky, Josef

Zlata Praha, 1885

2N5/1n6/N3p3/3k4/P2p1n2/1P3P2/7Q/K6B

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Se7#
      • 2.f4#
    • 1...Sg2
      • 2.Se7#
    • 1...Sd3
      • 2.Se7#
      • 2.f4#
    • 1...Sh3
      • 2.Se7#
      • 2.f4#
    • 1...Sh5
      • 2.Se7#
      • 2.f4#
    • 1...Sg6
      • 2.f4#
  • Tries
    • 1.Qh5+?
      • 1...Kc6
        • 2.Qb5#
      • 1...Sxh5
        • 2.f4#
      • 1...e5!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qe4#
      • 1...Kc6
        • 2.Qb5#
      • 1...Sxe2
        • 2.f4#
      • 1...e5
        • 2.Qc4#
      • 1...Sc5
        • 2.Sb4#
      • 1...Sd6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(b);::S(H)
    • S(b);OGATE::B(B)+P(E)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(C)
        • S(b);OGATE,XQ(C)::B(B)+P(E)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(c);S_FLIGHT::QAB1(C)
      • S(b);OGATE,XQ(C)::B(B)+P(E)
      • P(d);SBLOCK::QAB1(C)
      • S(e);SBLOCK::S(G)
      • S(e);SBLOCK::S(H)
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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).