MESON Chess Problem Database

Problem Display
PID: 139564 (1r6/4b3/p1q5/Q3RB2/2kB2NR/6r1/PPN5/K2n4 w - - 0 1)

Bakcsi, Gyorgy

1st HM., Israel Ring Ty., 1962

1r6/4b3/p1q5/Q3RB2/2kB2NR/6r1/PPN5/K2n4

#2

10 + 7

102 Probleemblad 1974

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Qd5#
    • 1...Qd5
      • 2.Qxd5#
    • 1...Qe8
      • 2.Qd5#
    • 1...Qb6
      • 2.Qd5#
    • 1...Qf6
      • 2.Qd5#
    • 1...Qg6
      • 2.Qd5#
    • 1...Qh6
      • 2.Qd5#
    • 1...Qc7
      • 2.Qd5#
    • 1...Qc8
      • 2.Qd5#
    • 1...Se3
      • 2.Qc3#
  • Tries
    • 1.Sce3+?
      • 1...Kxd4
        • 2.Qd2#
      • 1...Sxe3
        • 2.Qc3#
      • 1...Rxe3!
    • 1.Sge3+?
      • 1...Sxe3
        • 2.Qc3#
      • 1...Rxe3!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Sge3#
      • 1...Rxg4
        • 2.b3#
      • 1...Bxh4
        • 2.Qb4#
      • 1...Qe4
        • 2.Qxa6#
      • 1...Re3
        • 2.Sgxe3#
      • 1...Se3
        • 2.Sgxe3#
        • 2.Qc3#
        • 2.b3#

This is a version of 100479

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • Q(e);N_GUARD,P_PINP(B)::QAB1(H)
    • Q(e);N_GUARD::QAB1(H),XQ(e)
    • Q(e);N_GUARD::QAB1(H)
    • S(a);N_GUARD,S_CUTR(b)::QAR1(H)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);P-FLIGHT,XB(E)::QAR2(H)
        • S(a);XS(D)::QAR1(H)
      • Refutation
        • R(b);XS(D)
    • Try
      • S(F);CHECK
      • Vars
        • S(a);XS(F)::QAR1(H)
      • Refutation
        • R(b);XS(F)
  • Actual
    • B(E);
    • Threat
      • R(G)+S(F),DCHECK
    • Vars
      • R(b);N_GUARD,P_SPINR(b),XS(F)::P(C)
      • B(f);N_GUARD,XR(G)::QAR1(H)
      • Q(e);N_GUARD::QAB(H),XP(d)
      • R(b);::R(G)+S(F),DCHECK,XR(b)
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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).