MESON Chess Problem Database

Problem Display
PID: 40413 (K2B4/6N1/2R2p2/2R2Bk1/7b/4p1nP/4P1n1/6Qb w - - 0 1)

Harley, Brian

Source?, 0000

K2B4/6N1/2R2p2/2R2Bk1/7b/4p1nP/4P1n1/6Qb

#2

9 + 7

136 Problem Observer 2001
136 Problem Observer 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Se6#
    • 1...Se1
      • 2.Qxe3#
  • Tries
    • 1.Bxf6+?
      • 1...Kf4
        • 2.Se6#
      • 1...Kh6!
  • Keys
    • 1.Rxf6!
      • 1...Se1+
        • 2.Be4#
      • 1...Sf4+
        • 2.Rfc6#
      • 1...Kf4
        • 2.Se6#
      • 1...Sxe2
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bg4#
        • 2.Be6#
        • 2.Bd7#
        • 2.Bh7#
        • 2.Bc8#
      • 1...Sxf5
        • 2.Rcxf5#
      • 1...Sf1
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bg4#
        • 2.Be6#
        • 2.Bd7#
        • 2.Bh7#
        • 2.Bc8#
      • 1...Se4
        • 2.Bxe4#
      • 1...Sh5
        • 2.Se6#
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bg4#
        • 2.Be6#
        • 2.Bd7#
        • 2.Bh7#
        • 2.Bc8#

This is a version

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(f);N_SPINP(g),S_FLIGHT::S(G)
    • S(b);N_GUARD,P_PINR(F),P_SPINS(d)::QAB(A),XP(c)
  • Tries
    • Try
      • B(I);CHECK,XP(g)
      • Vars
        • K(f);S_FLIGHT::S(G)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • R(F);XP(g)
    • Vars
      • S(b);CHECK,P_SPINS(d)::R(D)+B(E)
      • S(b);CHECK,P_SPINS(d),SBLOCK::B(I)+R(F)
      • K(f);S_FLIGHT::S(G)
      • S(d);OGATE,P_SPINS(b),XB(E)::R1(D),XS(d)
      • S(d);N_GUARD,P_SPINS(b)::R(D)+B(E),XS(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).