MESON Chess Problem Database

Problem Display
PID: 58362 (8/2BRppN1/5kpK/7p/pp6/1nn1p3/B7/Q2Nb3 w - - 0 1)

Pavia, Ernest

Het Belgisch Schaakbord (L'Echiquier Belge), 1954

8/2BRppN1/5kpK/7p/pp6/1nn1p3/B7/Q2Nb3

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Bd8#
  • Tries
    • 1.Sxc3?
      • threat
        • 2.Se4#
        • 2.Sd5#
      • 1...Bxc3
        • 2.Qf1#
      • 1...bxc3!
    • 1.Rd5?
      • threat
        • 2.Be5#
      • 1...e5
        • 2.Bd8#
      • 1...e6
        • 2.Bd8#
      • 1...Bg3!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Sd5#
      • 1...Sxa1
        • 2.Se8#
      • 1...Bd2
        • 2.Qf1#
      • 1...Sd4
        • 2.Se8#
      • 1...e5
        • 2.Bd8#
      • 1...e6
        • 2.Se8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(j);N_SPINS(c),OGATEB,SBLOCK::B(E)
  • Tries
    • Try
      • S(B);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);OGATE,P_SPINB(a),XS(B)::QAR(A)
      • Refutation
        • P(f);P_SPINP(f),XS(B)
    • Try
      • R(F);
      • Threat
        • B(E)
      • Vars
        • P(j);N_SPINS(c),OGATEB::B(E)
        • P(j);OGATEB::B(E)
      • Refutation
        • B(a);
  • Actual
    • S(B);XP(d)
    • Threat
      • S(B)
    • Vars
      • S(b);N_SPINS(c),XQ(A)::S(G)
      • B(a);OGATE,P_PINS(B)::QAR(A)
      • S(b);N_SPINS(c)::S(G)
      • P(j);N_SPINS(c),OGATEB,SBLOCK::B(E)
      • P(j);SBLOCK::S(G)
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).