MESON Chess Problem Database

Problem Display
PID: 121515 (8/8/2Q5/8/1N1Rn3/4p1p1/3P2K1/3k4 w - - 0 1)

Kosek, Wojtech

Casopis ceskoslovenskych sachistu, 1902

8/8/2Q5/8/1N1Rn3/4p1p1/3P2K1/3k4

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qc1+?
      • 1...Ke2
        • 2.Qf1#
      • 1...Kxc1!
    • 1.Qc4?
      • threat
        • 2.Qf1#
      • 1...Ke1
        • 2.Qf1#
      • 1...e2!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qf1#
      • 1...Kc1
        • 2.Qa1#
      • 1...Ke1
        • 2.Qf1#
      • 1...e2
        • 2.Qa1#

There are these versions: 175253

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • P(b);
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • K(a);P-FLIGHT::QAR2(E)
      • K(a);P-FLIGHT::QAR1(E)
      • P(b);SBLOCK::QAR(E)
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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).