MESON Chess Problem Database

Problem Display
PID: 53880 (8/K7/4n3/8/1pnk4/1B2NQB1/8/8 w - - 0 1)

Levin, Eugene

Chess Life, 1955

8/K7/4n3/8/1pnk4/1B2NQB1/8/8

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd5#
    • 1...Sc5
      • 2.Sc2#
      • 2.Sf5#
  • Keys
    • 1.Bf2!
      • threat
        • 2.Sxc4#
      • 1...Kc3
        • 2.Sxc4#
      • 1...Kd3
        • 2.Sxc4#
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5
        • 2.Sxc4#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Sb2
        • 2.Sc4#
        • 2.Sg4#
      • 1...Sd2
        • 2.Sc4#
        • 2.Sg4#
      • 1...Sa3
        • 2.Sc4#
        • 2.Sg4#
      • 1...Sa5
        • 2.Sc4#
        • 2.Sg4#
      • 1...Se5
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg2#
        • 2.Sc4#
        • 2.Sg4#
        • 2.Sd5#
        • 2.Sf5#
      • 1...Sb6
        • 2.Sc4#
        • 2.Sg4#
      • 1...Sd6
        • 2.Sc4#
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR1(C)
  • Actual
    • B(D);
    • Threat
      • B(D)+S(B),XS(b)
    • Vars
      • K(c);S_FLIGHT::QAR(C)+S(B),XS(b)
      • K(c);P-FLIGHT::QAR(C)+S(B),XS(b)
      • K(c);S_FLIGHT::QAR1(C)
      • K(c);S_FLIGHT::S(B),XS(b)
      • S(b);OGATE,P_SPINS(b),XS(B)::QAB1(C),XS(b)
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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).