MESON Chess Problem Database

Problem Display
PID: 225566 (7K/3pB3/2p1n3/N1R5/1p1kB1bR/1Q4N1/1n6/1r2q3 w - - 0 1)

Kratochvil, Karel

Praca, 1957

7K/3pB3/2p1n3/N1R5/1p1kB1bR/1Q4N1/1n6/1r2q3

#2

8 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Sf5#
    • 1...Be2
      • 2.Sf5#
    • 1...Bf3
      • 2.Sf5#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Bh5
      • 2.Sf5#
    • 1...Sd1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sa4
      • 2.Qd3#
    • 1...Sc4
      • 2.Qd3#
    • 1...Sxc5
      • 2.Bf6#
    • 1...d5
      • 2.Sxc6#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Sb3#
      • 1...Bxf3
        • 2.Sf5#
      • 1...Sxc5
        • 2.Bf6#
      • 1...d5
        • 2.Sxc6#
      • 1...Qc3
        • 2.Se2#
      • 1...Qd1
        • 2.Qf2#
      • 1...Qe3
        • 2.Qf6#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...Sc4
        • 2.Qd3#
      • 1...b3
        • 2.Sxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(f);N_GUARD::S(B)
    • B(f);N_GUARD::S(B),XB(f)
    • S(c);N_GUARD::QAR1(A)
    • S(c);N_GUARD::QAR1(A),XS(c)
    • S(h);SBLOCK,XR(F)::B(G)
    • P(i);N_GUARD::S(E),XP(g)
  • Actual
    • Q(A);
    • Threat
      • S(E)
    • Vars
      • B(f);N_GUARD,XQ(A)::S(B)
      • S(h);SBLOCK,XR(F)::B(G)
      • P(i);N_GUARD::S(E),XP(g)
      • Q(b);N_GUARD::S(B)
      • Q(b);N_GUARD::QAB(A)
      • Q(b);SBLOCK::QAB(A)
      • S(c);N_GUARD::QAR1(A)
      • S(c);N_GUARD::QAR1(A),XS(c)
      • P(d);::S(E),XP(d)
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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).