MESON Chess Problem Database

Problem Display
PID: 248651 (8/8/4B1n1/1RpqBp2/P1k2p2/p1pN4/b1N1QpR1/rn1Kbr2 w - - 0 1)

Leroy, Dominique

Het Belgisch Schaakbord (L'Echiquier Belge), 1999

8/8/4B1n1/1RpqBp2/P1k2p2/p1pN4/b1N1QpR1/rn1Kbr2

#2

9 + 14

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6
      • 2.Sxf4#
    • 1...Bd2+
      • 2.Sde1#
    • 1...Bb3
      • 2.Rxc5#
    • 1...Sd2+
      • 2.Sc1#
    • 1...f3
      • 2.Se3#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Sc1#
        • 2.Sdxe1#
        • 2.Sb2#
        • 2.Sxf2#
        • 2.Sxf4#
        • 2.Sxc5#
        • 2.Se5#
      • 1...Bd2+
        • 2.Sde1#
      • 1...Sd2+
        • 2.Sc1#
      • 1...cxd4
        • 2.Sb2#
        • 2.Se5#
        • 2.Bxd5#
        • 2.Rb4#
      • 1...Se5
        • 2.Sb2#
        • 2.Sxe5#
      • 1...f3
        • 2.Sb2#
        • 2.Se5#
      • 1...Qxe6!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Se3#
      • 1...Bd2+
        • 2.Sde1#
      • 1...Sd2+
        • 2.Sc1#
      • 1...Sxe5
        • 2.Rxf4#
      • 1...fxg4
        • 2.Qe4#
      • 1...Bb3
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(l);N_PINS(E),N_SPINQ(l),XB(I)::QAB(C)+S(E),XP(j)
    • B(c);CHECK,N_PINS(E)::QAB(C)+S(E)
    • B(e);N_PINS(E),P_PINS(B),SBLOCK::R1(G),XP(k)
    • S(b);CHECK,N_PINS(E)::QAB(C)+S(E)
    • P(j);N_GUARD::S(B)
  • Tries
    • Try
      • B(H);N_SPINS(E)
      • Threat
        • DUALS(7)
      • Vars
        • B(c);CHECK::QAB(C)+S(E)
        • S(b);CHECK::QAB(C)+S(E)
      • Refutation
        • Q(l);N_SPINQ(l),XB(I)
  • Actual
    • R(D);P_PINP(j)
    • Threat
      • S(B)
    • Vars
      • B(c);CHECK,N_PINS(E)::QAB(C)+S(E)
      • S(b);CHECK,N_PINS(E)::QAB(C)+S(E)
      • S(n);N_GUARD,XB(H)::R(D),XP(j)
      • P(m);N_GUARD,N_SPINP(j),XR(D)::QAR2(C)
      • B(e);N_PINS(E),P_PINS(B),SBLOCK::R1(G),XP(k)
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).