MESON Chess Problem Database

Problem Display
PID: 78703 (2b4b/8/6Q1/4k3/8/4K3/3R4/2N5 w - - 0 1)

Abramenko, Sergey Petrovich

Problemist Pribuzhya, 1990

2b4b/8/6Q1/4k3/8/4K3/3R4/2N5

#2

4 + 3

5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Qd6#
    • 1...Bf6
      • 2.Qe4#
  • Tries
    • 1.Rd4?
      • threat
        • 2.Sd3#
      • 1...Bf6
        • 2.Qe4#
      • 1...Bf5
        • 2.Qd6#
      • 1...Ba6!
    • 1.Qf7?
      • threat
        • 2.Rd5#
      • 1...Be6
        • 2.Qf4#
      • 1...Bb7!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Sd3#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bf5
        • 2.Qg3#
      • 1...Ba6
        • 2.Qe6#

Anticipated by 77260(1987)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::QAB1(D)
    • B(c);SBLOCK::QAR1(D)
  • Tries
    • Try
      • R(B);
      • Threat
        • S(A)
      • Vars
        • B(c);SBLOCK::QAR1(D)
        • B(b);SBLOCK::QAB1(D)
      • Refutation
        • B(b);
    • Try
      • Q(D);
      • Threat
        • R1(B)
      • Vars
        • B(b);SBLOCK::QAB1(D)
      • Refutation
        • B(b);
  • Actual
    • R(B);
    • Threat
      • S(A)
    • Vars
      • B(b);N_GUARD::QAR1(D),XB(b)
      • B(c);N_GUARD::QAB1(D),XB(c)
      • B(b);SBLOCK::QAB(D)
      • B(b);N_GUARD::QAR1(D)
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).