MESON Chess Problem Database

Problem Display
PID: 57756 (8/8/8/5Q1n/8/5Kp1/4N2P/7k w - - 0 1)

Sokolov, Vladimir Viktorovich

Scacco!, 1995

8/8/8/5Q1n/8/5Kp1/4N2P/7k

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh2
      • 2.Qxh5#
    • 1...gxh2
      • 2.Qb1#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qg2#
        • 2.hxg3#
      • 1...gxh2
        • 2.Qf1#
        • 2.Qg2#
      • 1...g2
        • 2.Qxg2#
      • 1...Sf4!
    • 1.hxg3?
      • threat
        • 2.Qh3#
        • 2.Qxh5#
      • 1...Kh2
        • 2.Qxh5#
      • 1...Sxg3
        • 2.Qh3#
      • 1...Sf6
        • 2.Qh3#
      • 1...Sg7
        • 2.Qh3#
      • 1...Sf4!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qg1#
      • 1...Kxh2
        • 2.Qxh5#
      • 1...gxh2
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,XP(B)::QAR(D),XS(c)
    • P(b);SBLOCK,XP(B)::QAR(D)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAB1(D),XP(b)
      • Refutation
        • S(c);
    • Try
      • P(B);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR(D),XS(c)
        • S(c);XP(B)::QAR2(D)
        • S(c);::QAR2(D)
      • Refutation
        • S(c);
  • Actual
    • Q(D);
    • Threat
      • QAR1(D)
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(B)::QAR(D),XS(c)
      • P(b);SBLOCK,XP(B)::QAR(D)
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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).