MESON Chess Problem Database

Problem Display
PID: 44786 (3R1b2/3Pp1pn/1PkPp1P1/Pp2q3/1PN1N3/5B2/4K2B/7n w - - 0 1)

Petrovic, Nenad

Problem (Zagreb), 1951

3R1b2/3Pp1pn/1PkPp1P1/Pp2q3/1PN1N3/5B2/4K2B/7n

#2

12 + 9

56 The Problemist 2002
56 The Problemist 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sed2#
      • 2.Sf2#
      • 2.Sc3#
      • 2.Sg3#
      • 2.Sc5#
      • 2.Sg5#
      • 2.Sf6#
    • 1...Qb2+
      • 2.Sed2#
    • 1...Qxh2+
      • 2.Sf2#
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qg3
      • 2.Sxg3#
    • 1...Qxd6
      • 2.Sexd6#
    • 1...Qf6
      • 2.Sxf6#
    • 1...Qxe4+
      • 2.Bxe4#
    • 1...Qc5
      • 2.Sxc5#
    • 1...Qg5
      • 2.Sxg5#
  • Tries
    • 1.Sxe5+?
      • 1...Kb7
        • 2.Sc5#
      • 1...Kd5!
  • Keys
    • 1.Bxe5!
      • threat
        • 2.Sed2#
        • 2.Sf2#
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sf6#
      • 1...Sg3+
        • 2.Sxg3#
      • 1...Kd5
        • 2.Sed2#
      • 1...Kb7
        • 2.Sc5#
      • 1...bxc4
        • 2.Sc3#
      • 1...exd6
        • 2.Sexd6#
      • 1...Sf2
        • 2.Sxf2#
      • 1...Sg5
        • 2.Sxg5#
      • 1...Sf6
        • 2.Sxf6#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 9
  • Sets
    • Q(c);CHECK,N_PINS(F)::B(C)+S(F)
    • Q(c);CHECK,N_PINS(F),XB(B)::B(C)+S(F)
    • Q(c);N_PINS(F)::B(C)+S(F),XQ(c)
    • Q(c);N_PINS(F),XP(I)::B(C)+S(F),XQ(c)
    • Q(c);CHECK,OGATE,P_SPINQ(c),XS(F)::B(C),XQ(c)
  • Tries
    • Try
      • S(E);CHECK,N_SPINS(F),XQ(c)
      • Vars
        • K(d);S_FLIGHT::B(C)+S(F),DCHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • B(B);N_SPINS(F),XQ(c)
    • Threat
      • DUALS(7)
    • Vars
      • S(a);CHECK::B(C)+S(F),XS(a)
      • K(d);S_FLIGHT::B(C)+S(F)
      • K(d);S_FLIGHT::B(C)+S(F),DCHECK
      • P(b);XS(E)::B(C)+S(F)
      • P(f);XP(I)::B(C)+S(F),XP(f)
      • S(a);::B(C)+S(F),XS(a)
      • S(h);::B(C)+S(F),XS(h)
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).