MESON Chess Problem Database

Problem Display
PID: 42575 (b1Q3B1/4p3/8/1p1NPP2/1p1PkNpb/1P1R1pP1/1K3P2/2B5 w - - 0 1)

Boyer, Jean-Pierre

1st Prize, Europe Echecs, 1981

b1Q3B1/4p3/8/1p1NPP2/1p1PkNpb/1P1R1pP1/1K3P2/2B5

#2

13 + 8

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Bxd5#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qxa8#
      • 1...Bd5
        • 2.Bxd5#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Bxg3!
    • 1.Sxe7?
      • threat
        • 2.Qxa8#
      • 1...Bd5
        • 2.Bxd5#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Bxe7!
    • 1.Qxa8?
      • threat
        • 2.Se3#
        • 2.Sxe7#
      • 1...Bxg3
        • 2.Sxe7#
      • 1...e6
        • 2.Se3#
        • 2.Se7#
      • 1...Kxf5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc5#
      • 1...Kxd3
        • 2.Qc2#
      • 1...Kxd5
        • 2.Qxa8#
      • 1...Kxf5
        • 2.Bh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(h);OGATE,XS(I)::B(M),XB(h)
  • Tries
    • Try
      • S(I);
      • Threat
        • QAB(L),XB(h)
      • Vars
        • B(h);N_GUARD::B(M),XB(h)
        • B(h);N_GUARD::QAB(L),XB(h)
      • Refutation
        • B(e);XP(F)
    • Try
      • S(I);XP(g)
      • Threat
        • QAB(L),XB(h)
      • Vars
        • B(h);N_GUARD::B(M),XB(h)
        • B(h);N_GUARD::QAB(L),XB(h)
      • Refutation
        • B(e);XS(I)
    • Try
      • Q(L);XB(h)
      • Threat
        • DUALS(2)
      • Vars
        • B(e);XP(F)::QAB(L)+S(I),XP(g)
      • Refutation
        • K(c);S_FLIGHT,XP(K)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(L)
      • K(c);OGATEB,S_FLIGHT,XS(I)::QAB(L),XB(h)
      • K(c);OGATEB,S_FLIGHT,XP(K)::B(M)
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).