MESON Chess Problem Database

Problem Display
PID: 7130 (8/pbKB2P1/7n/3k4/1P3P2/1PPNpP2/3N4/r2R2r1 w - - 0 1)

Balashov, Evgeny Fedorovich

Pat a Mat, 1998

8/pbKB2P1/7n/3k4/1P3P2/1PPNpP2/3N4/r2R2r1

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.g8Q#
      • 2.g8B#
  • Tries
    • 1.Se4?
      • threat
        • 2.Sf6#
      • 1...Ra6
        • 2.Se1#
      • 1...Rg6
        • 2.Sc1#
      • 1...Sg4
        • 2.g8Q#
        • 2.g8B#
      • 1...Sg8!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Be6#
      • 1...Rxg7
        • 2.Sb1#
      • 1...Ra6
        • 2.Sf1#
      • 1...Rg6
        • 2.Sb1#
      • 1...Bc8
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD,S_CUTR(b)::P=Q
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • R(a);N_GUARD::R(A)+S(E)
        • R(b);N_GUARD::R(A)+S(E)
        • S(e);N_GUARD,S_CUTR(b)::P=Q
      • Refutation
        • S(e);
  • Actual
    • S(E);
    • Threat
      • B(J)
    • Vars
      • R(b);N_GUARD,P_PINB(J),XP(K)::R(A)+S(B)
      • R(a);N_GUARD::R(A)+S(B)
      • R(b);N_GUARD::R(A)+S(B)
      • B(g);N_GUARD::B(J)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).