MESON Chess Problem Database

Problem Display
PID: 18564 (3r4/QP1RR3/1K1bN3/5pPn/P3kr2/2B1p3/1Pp1p1P1/8 w - - 0 1)

Apro, Laszlo

2/3 Prize, Skakbladet, 1956

3r4/QP1RR3/1K1bN3/5pPn/P3kr2/2B1p3/1Pp1p1P1/8

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Sc5#
    • 1...Bb4
      • 2.Sc5#
    • 1...Bc5+
      • 2.Sxc5#
    • 1...Be5
      • 2.Sc5#
    • 1...Bc7+
      • 2.Sxc7#
    • 1...Bb8
      • 2.Sc5#
      • 2.Sc7#
  • Tries
    • 1.Qa6?
      • threat
        • 2.Qc4#
      • 1...Bc5+
        • 2.Sxc5#
      • 1...Bc7+
        • 2.Sxc7#
      • 1...Kd5
        • 2.Sc7#
      • 1...Be5
        • 2.Sc5#
        • 2.Qd3#
      • 1...Rc8!
  • Keys
    • 1.Kb5!
      • threat
        • 2.Qd4#
      • 1...Kd3
        • 2.Sc5#
      • 1...Kd5
        • 2.Sc7#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Be5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(h);::R(K)+S(G),DCHECK
    • B(h);CHECK::R(K)+S(G),DCHECK,XB(h)
    • B(h);::S(G)
    • B(h);CHECK,N_GUARD::R(K)+S(G),XB(h)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAR2(H)
      • Vars
        • B(h);CHECK::R(K)+S(G),DCHECK,XB(h)
        • B(h);CHECK,N_GUARD::R(K)+S(G),XB(h)
        • K(d);P_SPINB(h),S_FLIGHT::S(G)
      • Refutation
        • R(i);
  • Actual
    • K(F);P-FLIGHT
    • Threat
      • QAR1(H)
    • Vars
      • K(d);P_SPINB(h),S_FLIGHT::S(G)
      • B(h);::R(K)+S(G),DCHECK,XB(h)
      • B(h);::S(G)
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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).