MESON Chess Problem Database

Problem Display
PID: 5130 (8/2Q3p1/1n6/1KpN4/3p1PB1/1n1k4/1p1P4/3R4 w - - 0 1)

Havel, Miroslav

Narodni listy, 1900

8/2Q3p1/1n6/1KpN4/3p1PB1/1n1k4/1p1P4/3R4

#2

7 + 7

6024 Bohemian Garnets 1923
4312 Ceske Granaty 1975

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.Sb4#
    • 1...g5
      • 2.Qh7#
  • Tries
    • 1.Sb4+?
      • 1...Ke4
        • 2.Re1#
        • 2.Qe5#
      • 1...cxb4!
    • 1.Be2+?
      • 1...Kc2
        • 2.Sb4#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kxe2!
    • 1.Qd6?
      • threat
        • 2.Qg6#
      • 1...Ke4
        • 2.d3#
      • 1...g6
        • 2.Qxg6#
      • 1...Kc2!
    • 1.Qf7?
      • threat
        • 2.Qg6#
        • 2.Qf5#
      • 1...Ke4
        • 2.Qf5#
        • 2.d3#
      • 1...g6
        • 2.Qxg6#
      • 1...Kc2!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qg6#
      • 1...Kc2
        • 2.Sb4#
      • 1...Ke4
        • 2.d3#
      • 1...g6
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(c);P_SPINP(e),S_FLIGHT::S(F)
    • P(g);OGATE::QAB(G)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • P(e);XS(F)
    • Try
      • B(D);CHECK
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT::S(F)
        • K(c);S_FLIGHT::QAR1(G)
      • Refutation
        • K(c);S_FLIGHT,XB(D)
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • K(c);OGATE,S_FLIGHT::P(B)
        • P(g);::QAB(G),XP(g)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(g);::QAB(G),XP(g)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • K(c);P_SPINP(e),S_FLIGHT::S(F)
      • K(c);OGATE,S_FLIGHT::P(B)
      • P(g);::QAB(G),XP(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).