MESON Chess Problem Database

Problem Display
PID: 171311 (8/8/P1B5/3b4/1p6/k7/8/K4Q2 w - - 0 1)

Antipov, Viacheslav Pavlovich

Za Ogneypori, 1990

8/8/P1B5/3b4/1p6/k7/8/K4Q2

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Qd3#
    • 1...Bb3
      • 2.Qc1#
    • 1...b3
      • 2.Qf8#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qb2#
      • 1...Bxc6
        • 2.Qa2#
      • 1...b3!
    • 1.Qf2?
      • threat
        • 2.Qb2#
      • 1...Bxc6
        • 2.Qa2#
      • 1...b3
        • 2.Qc5#
        • 2.Qf8#
      • 1...Kb3!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qb2#
      • 1...Kb3
        • 2.Qd3#
      • 1...Bxc6
        • 2.Qa2#
      • 1...b3
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR2(B)
    • B(c);SBLOCK::QAB(B)
    • P(b);OGATEB,SBLOCK::QAB(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • B(c);N_GUARD,XB(D)::QAR1(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • B(c);N_GUARD,XB(D)::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
      • B(c);N_GUARD,XB(D)::QAR1(B)
      • P(b);OGATEB,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).