MESON Chess Problem Database

Problem Display
PID: 93283 (7b/8/8/2N2N2/4Q3/2k5/8/2K2b2 w - - 0 1)

Kapralos, Demetrius N

Moutecidis, Pavlos

Skakbladet, 1962

7b/8/8/2N2N2/4Q3/2k5/8/2K2b2

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Qe1#
    • 1...Bd4
      • 2.Qxd4#
  • Tries
    • 1.Se3?
      • threat
        • 2.Sd1#
        • 2.Sd5#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Be2
        • 2.Sd5#
      • 1...Bd4!
    • 1.Qb1?
      • threat
        • 2.Qb3#
      • 1...Bc4
        • 2.Sa4#
        • 2.Se4#
        • 2.Qb2#
      • 1...Kc4!
    • 1.Qd5?
      • threat
        • 2.Qb3#
      • 1...Bc4
        • 2.Qd2#
      • 1...Kb4!
    • 1.Qe6?
      • threat
        • 2.Qb3#
      • 1...Bc4
        • 2.Qe1#
      • 1...Kb4!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qb3#
      • 1...Bc4
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::QAB(B)
    • B(c);N_GUARD::QAB1(B),XB(c)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD::QAR1(B),XB(a)
        • B(a);::S(D)
      • Refutation
        • B(c);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • B(a);SBLOCK::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • B(a);SBLOCK::QAB(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • B(a);SBLOCK::QAB(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).