MESON Chess Problem Database

Problem Display
PID: 175527 (8/8/p7/N7/2K1p3/1P2N3/pk6/n3Q3 w - - 0 1)

Zimmermann, Stepan

Source?, 1900

8/8/p7/N7/2K1p3/1P2N3/pk6/n3Q3

#2

5 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Qc1#
  • Tries
    • 1.Kc5?
      • 1...Ka3
        • 2.Sec4#
        • 2.Qc1#
      • 1...Sc2
        • 2.Sec4#
      • 1...Sxb3+!
    • 1.Qc3+?
      • 1...Ka3
        • 2.Qc1#
      • 1...Kb1!
    • 1.Qxa1+?
      • 1...Ka3
        • 2.Sc2#
        • 2.Qc1#
      • 1...Kxa1!
  • Keys
    • 1.Kd5!
      • 1...Ka3
        • 2.Sec4#
      • 1...Sxb3
        • 2.Sac4#
      • 1...Sc2
        • 2.Sec4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(a);SBLOCK::S(C)
      • Refutation
        • S(a);CHECK,XP(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK,XS(a)
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • K(c);S_FLIGHT::S(C)
      • S(a);SBLOCK,XP(B)::S(E)
      • S(a);SBLOCK::S(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).