MESON Chess Problem Database

Problem Display
PID: 225606 (6N1/1n6/5B1r/p3K2k/r2Q1PR1/7P/8/8 w - - 0 1)

Markov, Evgeny Viktorovich

Praca, 1997

6N1/1n6/5B1r/p3K2k/r2Q1PR1/7P/8/8

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rg6
      • 2.Rh4#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Rg5#
        • 2.Qh4#
      • 1...Rg6
        • 2.Rh4#
        • 2.Qh4#
      • 1...Re4+!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Ke6#
      • 1...Re4+
        • 2.Kxe4#
      • 1...Rxf4
        • 2.Kxf4#
      • 1...Rxf6
        • 2.Kxf6#
      • 1...Rd4
        • 2.Kxd4#
      • 1...Rg6
        • 2.Rh4#
      • 1...Sc5
        • 2.Kd6#
      • 1...Sd6
        • 2.Kxd6#
      • 1...Sd8
        • 2.Kd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::R1(D)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • R(a);CHECK
  • Actual
    • Q(B);
    • Threat
      • QAR(B)+K(E)
    • Vars
      • R(a);CHECK::QAR(B)+K(E),XR(a)
      • R(a);XP(C)::QAR(B)+K(E),XR(a)
      • R(d);XB(F)::QAR(B)+K(E),XR(d)
      • R(a);::QAR(B)+K(E),XR(a)
      • R(d);SBLOCK::R1(D)
      • S(e);::QAR(B)+K(E)
      • S(e);::QAR(B)+K(E),XS(e)
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).