MESON Chess Problem Database

Problem Display
PID: 58140 (4k1K1/1NppP1Rp/5b2/3Q3b/2p3N1/8/3n4/1q1r1r2 w - - 0 1)

Beale, John Lindsay

Chess Life, 1959

4k1K1/1NppP1Rp/5b2/3Q3b/2p3N1/8/3n4/1q1r1r2

#2

6 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Qxh5#
    • 1...Qa1
      • 2.Qxh5#
    • 1...Qc1
      • 2.Qxh5#
    • 1...Qb2
      • 2.Qxh5#
    • 1...Qb3
      • 2.Qxh5#
    • 1...Qb4
      • 2.Qxh5#
    • 1...Qb6
      • 2.Qxh5#
    • 1...Qxb7
      • 2.Qxh5#
    • 1...Re1
      • 2.Sxf6#
    • 1...Rg1
      • 2.Sxf6#
    • 1...Rh1
      • 2.Sxf6#
    • 1...Bxg4
      • 2.Qf7#
    • 1...Bf7+
      • 2.Qxf7#
    • 1...Sf3
      • 2.Sxf6#
    • 1...Se4
      • 2.Qxh5#
    • 1...c5
      • 2.Sd6#
    • 1...c6
      • 2.Sd6#
    • 1...d6
      • 2.Qc6#
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qxd7#
      • 1...Bf7+
        • 2.Qxf7#
      • 1...Bxg4
        • 2.Qf7#
      • 1...Qd3
        • 2.Qa8#
      • 1...Qf5
        • 2.Qa8#
      • 1...Qb5
        • 2.Qxh5#
      • 1...Sb3
        • 2.Qa8#
      • 1...Sf3
        • 2.Sxf6#
      • 1...Se4
        • 2.Qxh5#
      • 1...d6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 13
  • Sets
    • Q(a);N_GUARD::QAB(B),XB(f)
    • Q(a);N_GUARD,XS(C)::QAB(B),XB(f)
    • R(c);N_GUARD::S(A),XB(g)
    • B(f);N_GUARD,XS(A)::QAB1(B)
    • B(f);CHECK,N_GUARD::QAB1(B),XB(f)
    • S(d);S_CUTR(c)::S(A),XB(g)
    • S(d);S_CUTQ(a)::QAB(B),XB(f)
    • P(h);N_GUARD::S(C)
    • P(i);OGATEB::QAB(B)
  • Actual
    • S(C);
    • Threat
      • QAB1(B),XP(i)
    • Vars
      • B(f);CHECK,N_GUARD::QAB1(B),XB(f)
      • B(f);N_GUARD,XS(A)::QAB1(B)
      • Q(a);N_GUARD::QAR(B)
      • Q(a);N_GUARD::QAB(B),XB(f)
      • S(d);S_CUTQ(a)::QAR(B)
      • S(d);S_CUTR(c)::S(A),XB(g)
      • S(d);S_CUTQ(a)::QAB(B),XB(f)
      • P(i);OGATEB::QAB(B)
HTML5 logo

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).