MESON Chess Problem Database

Problem Display
PID: 26945 (1Q6/3Rp3/p1K1P3/3PNpN1/3k1p2/2pp4/3n1P2/2r5 w - - 0 1)

Blake, Percy Francis

Bradford Observer Budget, 1896

1Q6/3Rp3/p1K1P3/3PNpN1/3k1p2/2pp4/3n1P2/2r5

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Sef3#
    • 1...Se4
      • 2.Sgf3#
    • 1...c2
      • 2.Qb2#
  • Tries
    • 1.Sef3+?
      • 1...Sxf3
        • 2.Qxf4#
      • 1...Kc4!
    • 1.Qb4+?
      • 1...Sc4
        • 2.Sef3#
      • 1...Kxe5!
  • Keys
    • 1.d6!
      • threat
        • 2.dxe7#
      • 1...Kxe5
        • 2.Qh8#
      • 1...exd6
        • 2.Qxd6#
      • 1...c2
        • 2.Qb2#
      • 1...Sc4
        • 2.Sef3#
      • 1...Se4
        • 2.Sgf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD,SBLOCK::S(C)
    • S(b);N_GUARD,SBLOCK::S(D)
    • P(c);OGATEB::QAB(H)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(b);XS(C)::QAR2(H),XP(f)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • S(b);P_SPINS(b)::S(C)
      • Refutation
        • K(e);S_FLIGHT,XS(C)
  • Actual
    • P(B);
    • Threat
      • R(G)+P(B),XP(i)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(C)::QAB(H)
      • P(i);OGATE,P_SPINP(i),XP(B)::QAR2(H),XP(i)
      • P(c);OGATEB::QAB(H)
      • S(b);N_GUARD,SBLOCK::S(C)
      • S(b);N_GUARD,SBLOCK::S(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).