MESON Chess Problem Database

Problem Display
PID: 81831 (8/BK5p/1RPp1RNr/1B4pp/3k4/pb1N4/qp1P1P2/2r3bQ w - - 0 1)

Klemanic, Emil

Salai (Jr), Ladislav

1st Prize, Jurmala, 2008

8/BK5p/1RPp1RNr/1B4pp/3k4/pb1N4/qp1P1P2/2r3bQ

#2

11 + 12

56 The Problemist 2008
145 StrateGems 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Ra6#
    • 1...Rb1
      • 2.Ra6#
    • 1...Rd1
      • 2.Ra6#
    • 1...Re1
      • 2.Ra6#
    • 1...Rf1
      • 2.Ra6#
    • 1...Rc4
      • 2.Rxd6#
    • 1...Rxc6
      • 2.Rxc6#
    • 1...Bc2
      • 2.Ra6#
    • 1...g4
      • 2.Rf4#
  • Tries
    • 1.Sgf4?
      • threat
        • 2.Se2#
      • 1...gxf4
        • 2.Rxf4#
      • 1...Re1
        • 2.Ra6#
      • 1...Rc4
        • 2.Qd5#
      • 1...Bc4
        • 2.Ra6#
      • 1...Bd1!
    • 1.Ba6?
      • threat
        • 2.Rb4#
      • 1...Rc4
        • 2.Rxd6#
      • 1...Bc4
        • 2.Rb3#
      • 1...Rc5!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Rb4#
        • 2.Qd5#
      • 1...Kxc4
        • 2.Qe4#
      • 1...Rxc4
        • 2.Rxd6#
      • 1...Bxc4
        • 2.Rb3#
      • 1...d5
        • 2.Rb4#
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::B(J)+R(F)
    • R(a);S_CUTB(f)::R(H),XP(j)
    • R(a);OGATE,XP(G)::B(J)+R(F),XR(a)
    • B(f);S_CUTR(a)::B(J)+R(F)
    • P(h);N_GUARD::R(H)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • P(h);OGATE,XS(I)::R(H),XP(h)
        • R(a);N_GUARD::B(J)+R(F)
        • R(a);S_CUTB(f)::QAR1(A)
        • B(f);S_CUTR(a)::B(J)+R(F)
      • Refutation
        • B(f);
    • Try
      • B(E);
      • Threat
        • B(J)+R(F),DCHECK
      • Vars
        • R(a);S_CUTB(f)::R(H),XP(j)
        • B(f);S_CUTR(a)::B(J)+R(F)
      • Refutation
        • R(a);
  • Actual
    • B(E);
    • Threat
      • DUALS(2)
    • Vars
      • K(g);P-FLIGHT,XB(E)::QAR2(A)
      • R(a);SBLOCK,XB(E)::R(H),XP(j)
      • B(f);SBLOCK,XB(E)::B(J)+R(F)
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).