MESON Chess Problem Database

Problem Display
PID: 229377 (8/8/8/3p1N2/4kP2/Q7/4K3/8 w - - 0 1)

Bylevski, Aleksandr

Sachova skladba, 1987

8/8/8/3p1N2/4kP2/Q7/4K3/8

#2

4 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sg3+?
      • 1...Kd4
        • 2.Qb4#
      • 1...Kxf4!
    • 1.Sd4?
      • threat
        • 2.Qe3#
      • 1...Kxd4
        • 2.Qb4#
      • 1...Kxf4!
    • 1.Sh4?
      • threat
        • 2.Qe3#
      • 1...Kd4
        • 2.Qb4#
      • 1...d4
        • 2.Qf3#
      • 1...Kxf4!
    • 1.Sd6+?
      • 1...Kd4
        • 2.Qb4#
        • 2.Qe3#
      • 1...Kxf4!
    • 1.Se7?
      • threat
        • 2.Qe3#
      • 1...Kd4
        • 2.Qb4#
      • 1...d4
        • 2.Qf3#
      • 1...Kxf4!
    • 1.Sg7?
      • threat
        • 2.Qe3#
      • 1...Kd4
        • 2.Qb4#
      • 1...d4
        • 2.Qf3#
      • 1...Kxf4!
  • Keys
    • 1.Sh6!
      • threat
        • 2.Qe3#
      • 1...Kd4
        • 2.Qb4#
      • 1...Kxf4
        • 2.Qe3#
      • 1...d4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • S(D);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • S(D);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • S(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • S(D);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • S(D);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
  • Actual
    • S(D);
    • Threat
      • QAR1(B)
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
      • K(a);P-FLIGHT,XP(C)::QAB1(B)
      • P(b);SBLOCK::QAB1(B)
HTML5 logo

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).