MESON Chess Problem Database

Problem Display
PID: 261229 (1b3K2/3pp3/r3kp1n/8/1NbQ1PP1/8/8/8 w - - 0 1)

Juricek, Stanislav

Sachove umeni (Ceskoslovensky sach), 2019

1b3K2/3pp3/r3kp1n/8/1NbQ1PP1/8/8/8

#2

5 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qe3#
      • 2.Qe4#
    • 1...Bf1
      • 2.Qd5#
    • 1...Be2
      • 2.Qd5#
    • 1...Bd3
      • 2.Qd5#
    • 1...Bb5
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Bd6
      • 2.Qxc4#
    • 1...Sf7
      • 2.f5#
    • 1...Sg8
      • 2.f5#
  • Tries
    • 1.Qxc4+?
      • 1...d5
        • 2.Qxd5#
      • 1...Kd6!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qxe7#
      • 1...Sxg4
        • 2.f5#
      • 1...d6
        • 2.Qc8#
      • 1...Rd6
        • 2.Qe3#
      • 1...Bd6
        • 2.Qxc4#
      • 1...Sf5
        • 2.gxf5#
      • 1...Sg8
        • 2.f5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • B(a);N_GUARD::QAB1(B)
    • B(a);N_GUARD::QAB1(B),XB(a)
    • B(h);SBLOCK,S_CUTP(f)::QAB(B),XB(a)
    • S(e);N_GUARD::P(C)
  • Tries
    • Try
      • Q(B);CHECK,XB(a)
      • Vars
        • P(f);P_SPINP(f)::QAB1(B),XP(f)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(g)
    • Vars
      • S(e);N_GUARD,XP(D)::P(C)
      • P(f);OGATEB,SBLOCK::QAB(B)
      • R(b);SBLOCK,S_CUTB(h)::QAR(B)
      • B(h);SBLOCK,S_CUTP(f)::QAB(B),XB(a)
      • S(e);OGATE::P(D),XS(e)
      • S(e);N_GUARD::P(C)
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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).