MESON Chess Problem Database

Problem Display
PID: 56654 (1R1R4/2p5/8/1N1N4/2kp4/P7/nbP5/4QK2 w - - 0 1)

Shedey, Sergey Oleksandrovich

2nd HM., Shakhmaty, 1965

1R1R4/2p5/8/1N1N4/2kp4/P7/nbP5/4QK2

#2

8 + 5

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qb4#
    • 1...Sb4
      • 2.Qxb4#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Qxc7#
      • 1...Kc5
        • 2.Qxc7#
      • 1...Bxa3
        • 2.Qxd4#
      • 1...c5
        • 2.Sd6#
      • 1...c6
        • 2.Sb6#
      • 1...Sb4!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qxc7#
      • 1...Kc5
        • 2.Qxc7#
      • 1...Bxa3
        • 2.Sxa3#
      • 1...Sb4
        • 2.Qxb4#
      • 1...c5
        • 2.Sb6#
      • 1...c6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::QAR1(A)
    • S(a);N_GUARD::QAR1(A),XS(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR(A),XP(e)
      • Vars
        • K(c);P-FLIGHT::QAR2(A),XP(e)
        • B(b);N_GUARD,XP(D)::QAR1(A),XP(d)
        • P(e);N_GUARD,SBLOCK::S(E)
        • P(e);N_GUARD::S(F)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Threat
      • QAR(A),XP(e)
    • Vars
      • K(c);P-FLIGHT::QAR2(A),XP(e)
      • B(b);XP(D)::S(E),XB(b)
      • S(a);N_GUARD::QAR1(A),XS(a)
      • P(e);N_GUARD,SBLOCK::S(F)
      • P(e);N_GUARD::S(E)
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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).