MESON Chess Problem Database

Problem Display
PID: 80150 (3Nr3/1Bp5/1bR1n3/3k4/3P2N1/3P1nK1/1q2Prb1/8 w - - 0 1)

Casa, Alex

2nd Prize, Nice-Matin, 1970

3Nr3/1Bp5/1bR1n3/3k4/3P2N1/3P1nK1/1q2Prb1/8

#2

8 + 9

133 The Problemist Supplement 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Rc4#
    • 1...Bxd4
      • 2.e4#
  • Tries
    • 1.Rc5+?
      • 1...Kxd4
        • 2.Rc4#
      • 1...Kd6!
    • 1.Rxc7+?
      • 1...Kxd4
        • 2.Rc4#
      • 1...Kd6!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Rd6#
      • 1...Kxd4
        • 2.Rc4#
      • 1...Qxd4
        • 2.Rxc7#
      • 1...Bxd4
        • 2.e4#
      • 1...Sfxd4
        • 2.Se3#
      • 1...Sexd4
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT,XP(D)::R1(F)
    • B(f);SBLOCK,XP(D)::P(A)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(D)::R1(F)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(F);CHECK,XP(h)
      • Vars
        • K(e);P-FLIGHT,XP(D)::R1(F)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • S(H);
    • Threat
      • B(G)+R(F),DCHECK
    • Vars
      • K(e);P-FLIGHT,XP(D)::R1(F)
      • Q(a);SBLOCK,XP(D)::B(G)+R(F),XP(h)
      • B(f);SBLOCK,XP(D)::P(A)
      • S(d);SBLOCK,XP(D)::S(E)
      • S(g);SBLOCK,XP(D)::S(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).