MESON Chess Problem Database

Problem Display
PID: 109425 (K1Q5/1p2pR1p/3k3r/3PR3/b4N2/b5rp/7B/7B w - - 0 1)

Spiess, Jean-Yves

Canadian Chess Chat, 1980

K1Q5/1p2pR1p/3k3r/3PR3/b4N2/b5rp/7B/7B

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Re6#
    • 1...Rh5
      • 2.Re6#
    • 1...Re6
      • 2.Rxe6#
    • 1...e6
      • 2.Qc7#
  • Keys
    • 1.Se6!
      • threat
        • 2.Qc7#
      • 1...Kxe5
        • 2.Bxg3#
      • 1...Rxe6
        • 2.Rxe6#
      • 1...Rc3
        • 2.Re3#
      • 1...Rg8
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(f);N_GUARD::R1(E)
    • R(f);N_GUARD::R1(E),XR(f)
    • P(h);::QAB1(H)
  • Actual
    • S(C);
    • Threat
      • QAB1(H)
    • Vars
      • K(e);OGATEB,P_SPINR(b),S_FLIGHT,XR(E)::B(B),XR(b)
      • R(f);OGATE,XS(C)::R1(E),XR(f)
      • R(b);OGATEB::B(B)+R(E)
      • R(b);OGATEB,P_PINQ(H)::B(B)+R(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).