MESON Chess Problem Database

Problem Display
PID: 107792 (6B1/8/R4PP1/2P2krQ/3KRNb1/8/8/8 w - - 0 1)

Brabec, Juraj

Shakhmaty, 1970

6B1/8/R4PP1/2P2krQ/3KRNb1/8/8/8

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sg2?
      • threat
        • 2.Se3#
        • 2.Sh4#
        • 2.Rf4#
        • 2.Re5#
      • 1...Bxh5
        • 2.Sh4#
      • 1...Rxh5!
    • 1.Sd5?
      • threat
        • 2.Se3#
        • 2.Se7#
        • 2.Be6#
        • 2.Rf4#
        • 2.Re5#
      • 1...Bxh5
        • 2.Se7#
      • 1...Rxh5!
    • 1.Qh7?
      • threat
        • 2.Qd7#
      • 1...Rxg6
        • 2.Qxg6#
      • 1...Rh5!
  • Keys
    • 1.Qh4!
      • 1...Rxg6
        • 2.Be6#
      • 1...Rh5
        • 2.Be6#
      • 1...Bd1
        • 2.Re5#
      • 1...Be2
        • 2.Re5#
      • 1...Bf3
        • 2.Re5#
      • 1...Bh3
        • 2.Re5#
      • 1...Bh5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(4)
      • Vars
        • B(a);N_SPINR(c),XQ(E)::S(C)
      • Refutation
        • R(c);N_SPINR(c),XQ(E)
    • Try
      • S(C);
      • Threat
        • DUALS(5)
      • Vars
        • B(a);N_SPINR(c),XQ(E)::S(C)
      • Refutation
        • R(c);N_SPINR(c),XQ(E)
    • Try
      • Q(E);N_PINR(c)
      • Threat
        • QAB(E)
      • Vars
        • R(c);OGATE,P_SPINR(c),XP(H)::QAB1(E),XR(c)
      • Refutation
        • R(c);
  • Actual
    • Q(E);N_PINR(c)
    • Vars
      • R(c);XP(H)::B(I)
      • R(c);::B(I)
      • B(a);::R1(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).