MESON Chess Problem Database

Problem Display
PID: 264234 (6Nb/8/5rp1/1p2k1N1/8/1K2B3/5Q2/8 w - - 0 1)

Kos, Vladimir

Prace, 1983

6Nb/8/5rp1/1p2k1N1/8/1K2B3/5Q2/8

#2

5 + 5

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qg3+?
      • 1...Kd5
        • 2.Se7#
      • 1...Kf5
        • 2.Sh6#
        • 2.Se7#
        • 2.Qf4#
      • 1...Rf4!
    • 1.Qh2+?
      • 1...Kd5
        • 2.Se7#
      • 1...Kf5
        • 2.Sh6#
        • 2.Qf4#
      • 1...Rf4!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Se7#
      • 1...Rxf4!
    • 1.Qxf6+?
      • 1...Kd5
        • 2.Se7#
        • 2.Qe6#
      • 1...Bxf6!
  • Keys
    • 1.Bf4+!
      • 1...Kd5
        • 2.Se7#
      • 1...Kf5
        • 2.Sh6#
      • 1...Rxf4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT,S_CUTR(c)::S(E)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT,S_CUTR(c)::S(E)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT,S_CUTR(c)::S(E)
      • Refutation
        • R(c);XQ(A)
    • Try
      • Q(A);CHECK,XR(c)
      • Refutation
        • B(e);XQ(A)
  • Actual
    • B(C);CHECK
    • Vars
      • K(b);P-FLIGHT,S_CUTR(c)::S(E)
      • K(b);N_GUARD,P-FLIGHT,S_CUTR(c)::S(E)
      • R(c);SBLOCK,XB(C)::QAR2(A)
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).