MESON Chess Problem Database

Problem Display
PID: 555 (7N/3pKN1p/R6P/R2B4/5pk1/3P3b/4p1pQ/4B1n1 w - - 0 1)

Barnes, Barry Peter

2nd Prize, The Observer, 1964

7N/3pKN1p/R6P/R2B4/5pk1/3P3b/4p1pQ/4B1n1

#2

10 + 8

3747 FIDE Album (1962-1964) 1968
4199 Barnes about Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Be6#
    • 1...Kh5
      • 2.Bf3#
  • Tries
    • 1.Bxg2?
      • threat
        • 2.Rg5#
      • 1...Bxg2
        • 2.Qxg2#
        • 2.Qh5#
      • 1...Sf3
        • 2.Bxh3#
        • 2.Qxh3#
      • 1...d5!
    • 1.Rg6+?
      • 1...Kf5
        • 2.Be4#
        • 2.Be6#
        • 2.Rg5#
      • 1...Kh5
        • 2.Bf3#
        • 2.Rg5#
      • 1...hxg6!
    • 1.Qg3+?
      • 1...Kf5
        • 2.Be4#
        • 2.Be6#
        • 2.Rf6#
        • 2.Qg5#
      • 1...Kh5
        • 2.Bf3#
        • 2.Qh4#
        • 2.Qg5#
      • 1...fxg3!
    • 1.Qxf4+?
      • 1...Kh5
        • 2.Bf3#
        • 2.Qg5#
        • 2.Qh4#
      • 1...Kxf4!
    • 1.Qxg2+?
      • 1...Kf5
        • 2.Be4#
        • 2.Be6#
        • 2.Rf6#
        • 2.Qg5#
      • 1...Kh5
        • 2.Bf3#
        • 2.Qg5#
      • 1...Bxg2!
  • Keys
    • 1.Kxd7!
      • 1...Kh5+
        • 2.Be6#
      • 1...Kf5
        • 2.Bf3#
      • 1...Sf3
        • 2.Be6#
      • 1...f3
        • 2.Be6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(f);S_FLIGHT::R(D)+B(E),DCHECK
    • K(f);P_SPINB(d),S_FLIGHT::R(D)+B(E),DCHECK
  • Tries
    • Try
      • B(E);XP(c)
      • Threat
        • R1(D)
      • Refutation
        • P(g);
    • Try
      • R(F);CHECK
      • Refutation
        • P(h);XR(F)
    • Try
      • Q(B);CHECK
      • Refutation
        • P(e);XQ(B)
    • Try
      • Q(B);CHECK,XP(e)
      • Refutation
        • K(f);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK,XP(c)
      • Refutation
        • B(d);XQ(B)
  • Actual
    • K(H);P-FLIGHT,XP(g)
    • Vars
      • K(f);CHECK,P_SPINB(d),S_FLIGHT::R(D)+B(E)
      • K(f);S_FLIGHT::R(D)+B(E)
      • S(a);SBLOCK::B(E)
      • P(e);SBLOCK::B(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).