MESON Chess Problem Database

Problem Display
PID: 203280 (3K3b/2n1B3/1p2k1P1/4P2R/2p1N1P1/2N2B2/8/8 w - - 0 1)

de Boer, AJ

Tijdschrift vd NSB, 1924

3K3b/2n1B3/1p2k1P1/4P2R/2p1N1P1/2N2B2/8/8

#2

9 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Sg5#
    • 1...b5
      • 2.Sc5#
  • Tries
    • 1.Bd6?
      • threat
        • 2.Sg5#
      • 1...Bxe5
        • 2.Rxe5#
      • 1...Bf6+!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sf4#
      • 1...Kd5
        • 2.Sc5#
      • 1...Bxe5
        • 2.Sg5#
      • 1...Sd5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(e);SBLOCK,XP(E)::S(C)
    • P(b);N_GUARD::S(C)
  • Tries
    • Try
      • B(H);
      • Threat
        • S(C)
      • Vars
        • B(e);OGATE,XP(E)::R1(F),XB(e)
      • Refutation
        • B(e);CHECK
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • K(c);S_FLIGHT::B(B)+S(C)
      • B(e);SBLOCK,XP(E)::S(C)
      • S(d);SBLOCK::S(A)
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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).