MESON Chess Problem Database

Problem Display
PID: 17949 (r5R1/P1R2B2/3k4/BP2p3/3n4/K1p3Nr/5n2/1b1Qb3 w - - 0 1)

Chandler, Guy Wills

Glasgow Herald, 1952

r5R1/P1R2B2/3k4/BP2p3/3n4/K1p3Nr/5n2/1b1Qb3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa7
      • 2.Rd8#
    • 1...Rd8
      • 2.Rxd8#
    • 1...Ba2
      • 2.Sf5#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Bg6
      • 2.Rxg6#
    • 1...Sd3
      • 2.Se4#
    • 1...Se4
      • 2.Sf5#
    • 1...c2
      • 2.Rg6#
    • 1...e4
      • 2.Qxd4#
  • Tries
    • 1.Rxa8?
      • threat
        • 2.Rd8#
      • 1...e4
        • 2.Qxd4#
      • 1...Bf5
        • 2.Sxf5#
      • 1...Rh8!
  • Keys
    • 1.b6!
      • threat
        • 2.Bb4#
      • 1...Rxa7
        • 2.Rd8#
      • 1...e4
        • 2.Qxd4#
      • 1...Sd3
        • 2.Se4#
      • 1...Se4
        • 2.Sf5#
      • 1...c2
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(i);N_GUARD,P_PINB(D),XP(F)::R(I)
    • R(i);N_GUARD::R(I),XR(i)
    • B(a);N_GUARD::S(C)
    • B(a);N_GUARD::S(C),XB(a)
    • B(a);N_GUARD::R(I),XB(a)
    • S(c);N_GUARD,N_SPINS(f),S_CUTB(a)::S(C)
    • S(c);S_CUTB(a)::S(C)
    • P(d);P_PINS(C),S_CUTB(a)::R(I)
    • P(g);N_GUARD::QAR2(A),XS(f)
  • Tries
    • Try
      • R(I);XR(i)
      • Threat
        • R(I)
      • Vars
        • P(g);N_GUARD::QAR2(A),XS(f)
        • B(a);N_GUARD::S(C),XB(a)
      • Refutation
        • R(e);
  • Actual
    • P(E);
    • Threat
      • B(D)
    • Vars
      • R(i);N_GUARD,P_PINB(D),XP(F)::R(I)
      • P(g);N_GUARD::QAR2(A),XS(f)
      • S(c);N_GUARD,N_SPINS(f),S_CUTB(a)::S(C)
      • S(c);S_CUTB(a)::S(C)
      • P(d);P_PINS(C),S_CUTB(a)::R(I)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).