MESON Chess Problem Database

Problem Display
PID: 76988 (8/B2K3Q/3p4/3k4/p1p2P2/7p/r7/b7 w - - 0 1)

Gallery, Terence C

Belfast Newsletter, 1946

8/B2K3Q/3p4/3k4/p1p2P2/7p/r7/b7

#2

4 + 7

1189 The Tablet 1948
82 Chess World (The) 1961
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Qf5#
    • 1...c3
      • 2.Qd3#
  • Tries
    • 1.Qd3+?
      • 1...Bd4
        • 2.Qf3#
        • 2.Qxd4#
      • 1...cxd3!
    • 1.Qh5+?
      • 1...Be5
        • 2.Qf3#
      • 1...Ke4!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qb7#
      • 1...c3
        • 2.Qd3#
      • 1...Rb2
        • 2.Qf5#
      • 1...Bb2
        • 2.Qh1#

Anticipated by 21150(1917)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(b);S_CUTB(a)::QAR2(D)
    • P(e);N_GUARD,S_CUTB(a)::QAR2(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • P(e);XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • B(a);P_SPINB(a)::QAB(D)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(D);
    • Threat
      • QAB(D)
    • Vars
      • P(e);N_GUARD,S_CUTB(a)::QAR2(D)
      • R(b);S_CUTB(a)::QAR2(D)
      • B(a);S_CUTR(b)::QAB(D)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).