MESON Chess Problem Database

Problem Display
PID: 10289 (6N1/8/8/2B1kP1R/3n1nK1/3P1P2/B2pP3/4Q3 w - - 0 1)

Brabec, Juraj

Problem (Zagreb), 1963

6N1/8/8/2B1kP1R/3n1nK1/3P1P2/B2pP3/4Q3

#2

10 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sdxe2
      • 2.d4#
    • 1...Sxf5
      • 2.Rxf5#
      • 2.Qa1#
      • 2.d4#
    • 1...Sfxe2
      • 2.f4#
  • Tries
    • 1.Qg3?
      • threat
        • 2.Qxf4#
      • 1...Sxe2
        • 2.f6#
      • 1...Se6
        • 2.fxe6#
      • 1...Sb3!
    • 1.e3?
      • threat
        • 2.exd4#
        • 2.exf4#
      • 1...Sxf3
        • 2.exf4#
      • 1...Sxf5
        • 2.Rxf5#
        • 2.Qa1#
        • 2.d4#
        • 2.exf4#
      • 1...Sxd3
        • 2.exd4#
      • 1...Sxh5
        • 2.exd4#
      • 1...Sc2
        • 2.exf4#
      • 1...Sde2
        • 2.exf4#
      • 1...Sb5
        • 2.exf4#
      • 1...Sc6
        • 2.exf4#
      • 1...Sde6
        • 2.exf4#
      • 1...Sfe2
        • 2.exd4#
      • 1...Sg2
        • 2.exd4#
      • 1...Sh3
        • 2.exd4#
      • 1...Sd5
        • 2.exd4#
      • 1...Sfe6
        • 2.exd4#
      • 1...Sg6
        • 2.exd4#
      • 1...Sb3!
    • 1.f6+?
      • 1...Sf5
        • 2.Rxf5#
        • 2.Qa1#
        • 2.d4#
      • 1...Sxh5!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qxd4#
      • 1...Sxe2
        • 2.f6#
      • 1...Se6
        • 2.fxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(b);OGATE,P_SPINS(b),XP(C)::P(D)
    • S(c);OGATE,P_SPINS(c),XP(C)::P(E)
  • Tries
    • Try
      • Q(A);P_PINS(c)
      • Threat
        • QAB1(A),XS(c)
      • Vars
        • S(b);N_GUARD,XP(C)::R(I)+P(H)
        • S(b);OGATE::R(I)+P(H),XS(b)
      • Refutation
        • S(b);
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XP(E)::QAR(A)+P(C)DCHECK,XS(c)
        • S(c);XP(D)::QAR(A)+P(C)DCHECK,XS(b)
        • S(c);XR(I)::QAR(A)+P(C)DCHECK,XS(b)
        • S(b);::QAR(A)+P(C)DCHECK,XS(c)
        • S(b);::P(C),XS(c)
        • S(c);::P(C),XS(b)
        • S(c);::QAR(A)+P(C)DCHECK,XS(b)
      • Refutation
        • S(b);
    • Try
      • P(H);CHECK
      • Refutation
        • S(c);XR(I)
  • Actual
    • Q(A);P_PINS(b)
    • Threat
      • QAB1(A),XS(b)
    • Vars
      • S(c);N_GUARD,XP(C)::R(I)+P(H)
      • S(c);OGATE::R(I)+P(H),XS(c)
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).