MESON Chess Problem Database

Problem Display
PID: 103822 (8/4b1B1/r1Q1q3/1R1n2p1/1p1Pk3/pKp4N/4P3/3N1R2 w - - 0 1)

Vaughan, Colin V

2nd HM., BCF 069. Ty., 1951-1952

8/4b1B1/r1Q1q3/1R1n2p1/1p1Pk3/pKp4N/4P3/3N1R2

#2

9 + 9

6490 yacpdb 2009
14869 British Championship Solving Ty. 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh3
      • 2.Qxd5#
    • 1...Qg4
      • 2.Qxd5#
    • 1...Qc8
      • 2.Qxd5#
    • 1...Qf6
      • 2.Qxd5#
    • 1...Qg6
      • 2.Qxd5#
    • 1...Qh6
      • 2.Qxd5#
    • 1...Ra4
      • 2.Qxe6#
    • 1...Ra5
      • 2.Qxe6#
    • 1...Ra7
      • 2.Qxe6#
    • 1...Ra8
      • 2.Qxe6#
    • 1...Bc5
      • 2.Sxg5#
    • 1...Bd6
      • 2.Sxg5#
    • 1...Bf8
      • 2.Sxg5#
    • 1...c2
      • 2.Qxc2#
    • 1...g4
      • 2.Rf4#
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qd3#
      • 1...Qxh3
        • 2.Qxd5#
      • 1...Se3
        • 2.Sdf2#
      • 1...Sf4
        • 2.Shf2#
      • 1...Sb6
        • 2.Qxe6#
      • 1...Sf6
        • 2.Sxg5#
      • 1...Sc7
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 14
  • Sets
    • Q(h);N_GUARD,XS(E)::QAB1(H),XS(e)
    • Q(h);N_GUARD::QAB1(H),XS(e)
    • R(g);N_GUARD::QAR2(H),XQ(h)
    • B(i);N_GUARD::S(E),XP(f)
    • P(b);OGATE::QAB(H),XP(b)
    • P(f);N_GUARD::R1(B)
  • Actual
    • Q(H);N_PINS(e)
    • Threat
      • QAB1(H)
    • Vars
      • Q(h);N_GUARD,XS(E)::QAB1(H),XS(e)
      • S(e);P_PINQ(H),SBLOCK::S(A)
      • S(e);P_PINQ(H),SBLOCK::S(E)
      • S(e);OGATE,P_PINQ(H)::QAR2(H),XQ(h)
      • S(e);P_PINQ(H),S_CUTB(i)::S(E),XP(f)
      • S(e);OGATE,P_PINQ(H)::QAR(H)+P(F)
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).