MESON Chess Problem Database

Problem Display
PID: 166966 (1K3B2/2Q2R2/p1PN2p1/2P2bR1/2BkP3/2pPp1q1/8/8 w - - 0 1)

Jankevics, Karlis

Sachmatija, 2010

1K3B2/2Q2R2/p1PN2p1/2P2bR1/2BkP3/2pPp1q1/8/8

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Sb5#
      • 2.Sxf5#
    • 1...Qxd6
      • 2.Qxd6#
    • 1...Bh3
      • 2.Rd5#
    • 1...Bg4
      • 2.Rd5#
    • 1...Bd7
      • 2.Rd5#
    • 1...Bc8
      • 2.Rd5#
    • 1...a5
      • 2.Sb5#
  • Keys
    • 1.Rd7!
      • threat
        • 2.Sb5#
        • 2.Sxf5#
      • 1...Kxc5
        • 2.Sb7#
      • 1...Ke5
        • 2.Se8#
      • 1...Qxd6
        • 2.Qxd6#
      • 1...Bxe4
        • 2.Sb5#
        • 2.Sf5#
      • 1...Bxd7
        • 2.Rd5#
      • 1...c2
        • 2.Sb5#
      • 1...e2
        • 2.Sxf5#
      • 1...Bh3
        • 2.Sb5#
        • 2.Sf5#
        • 2.Rd5#
      • 1...Bg4
        • 2.Sb5#
        • 2.Sf5#
        • 2.Rd5#
      • 1...Be6
        • 2.Sb5#
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(c);OGATE,P_PINQ(H),XS(G)::QAR2(H),XQ(c)
    • B(e);OGATE::R1(E)
    • P(f);N_GUARD::S(G)
  • Actual
    • R(I);
    • Threat
      • DUALS(2)
    • Vars
      • K(d);P_SPINB(e),S_FLIGHT,XP(D)::B(K)+S(G),DCHECK
      • K(d);P_SPINB(e),S_FLIGHT::QAB(H)+S(G)
      • Q(c);OGATE,P_PINQ(H),P_SPINQ(c),XS(G)::QAR2(H),XQ(c)
      • B(e);OGATE,XR(I)::R1(E)
      • P(a);::R(I)+S(G),DCHECK
      • P(b);::R(I)+S(G),DCHECK,XB(e)
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).