MESON Chess Problem Database

Problem Display
PID: 182303 (8/3NK2B/7n/3k1p2/P1R5/N1p2b2/1n2P3/1Q5r w - - 0 1)

van Dijk, Johannes

Schaakbladet, 1906

8/3NK2B/7n/3k1p2/P1R5/N1p2b2/1n2P3/1Q5r

#2

8 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qd3#
      • 2.Qb5#
      • 2.Qb7#
    • 1...Sd3
      • 2.Qxd3#
      • 2.Qb7#
    • 1...Sxa4
      • 2.Qd3#
      • 2.Qb7#
    • 1...Sg4
      • 2.Bg8#
    • 1...Sg8+
      • 2.Bxg8#
  • Tries
    • 1.Bg8+?
      • 1...Sf7
        • 2.Bxf7#
        • 2.Qxf5#
      • 1...Sxg8+!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Se3#
      • 1...Sg8+
        • 2.Bxg8#
      • 1...Kxc4
        • 2.Qa2#
      • 1...Sxc4
        • 2.Qb7#
      • 1...Sd1
        • 2.Qb5#
      • 1...Sg4
        • 2.Bg8#
      • 1...f4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(g);N_GUARD::B(H)
    • S(g);CHECK,N_GUARD::B(H),XS(g)
  • Tries
    • Try
      • B(H);CHECK
      • Refutation
        • S(g);CHECK,XB(H)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • S(g);CHECK,N_GUARD::B(H),XS(g)
      • K(e);OGATEB,S_FLIGHT,XR(E)::QAB(A)
      • S(b);OGATE,SBLOCK,XR(E)::QAB(A)
      • S(b);OGATE::QAR2(A)
      • S(g);N_GUARD::B(H)
      • P(f);::R1(E)
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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).