MESON Chess Problem Database

Problem Display
PID: 261354 (1nqN1Q2/2b5/pP5n/4P1r1/3k2r1/3P4/B2P4/K2RN3 w - - 0 1)

Balo, Tibor

Neue Zurcher Zeitung, 1989

1nqN1Q2/2b5/pP5n/4P1r1/3k2r1/3P4/B2P4/K2RN3

#2

10 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Sf3#
    • 1...Rxe5
      • 2.Qb4#
    • 1...Bxe5
      • 2.Qf2#
    • 1...Bxb6
      • 2.Qd6#
    • 1...Bd6
      • 2.Qxd6#
    • 1...Bxd8
      • 2.Qd6#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sd7
      • 2.Sc6#
  • Tries
    • 1.Se6+?
      • 1...Kxe5
        • 2.Sf3#
      • 1...Qxe6!
    • 1.Qa3?
      • threat
        • 2.Sf3#
        • 2.Qc3#
      • 1...Bxe5
        • 2.Sf3#
      • 1...Bxb6
        • 2.Sf3#
        • 2.Qd6#
      • 1...Bxd8
        • 2.Sf3#
        • 2.Qd6#
      • 1...Qf5
        • 2.Qc3#
      • 1...Qb7
        • 2.Qc3#
      • 1...Rg3
        • 2.Qc3#
      • 1...Rf4
        • 2.Qc3#
      • 1...Rf5
        • 2.Qc3#
      • 1...Bd6
        • 2.Sf3#
        • 2.Qxd6#
      • 1...Kxe5!
  • Keys
    • 1.Rc1!
      • threat
        • 2.Qc5#
      • 1...Kxe5
        • 2.Sf3#
      • 1...Rxe5
        • 2.Qb4#
      • 1...Bxe5
        • 2.Qf2#
      • 1...Bxb6
        • 2.Qd6#
      • 1...Bxd8
        • 2.Qd6#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Sd7
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);N_GUARD,S_FLIGHT,XP(G)::S(C)
    • R(c);SBLOCK,XP(G)::QAR2(J)
    • B(f);SBLOCK,XP(G)::QAB(J)
    • B(f);N_GUARD,XP(H)::QAR2(J)
    • B(f);N_GUARD::QAR2(J),XB(f)
    • B(f);N_GUARD,XS(I)::QAR2(J)
    • S(g);N_GUARD::S(I),XS(g)
    • S(g);N_GUARD::S(I)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XP(G)::S(C)
      • Refutation
        • Q(h);XS(I)
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XP(G)::S(C)
        • Q(h);::QAB1(J)
        • R(b);::QAB1(J)
        • R(c);::QAB1(J)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
  • Actual
    • R(B);
    • Threat
      • QAB1(J)
    • Vars
      • K(a);N_GUARD,S_FLIGHT,XP(G)::S(C)
      • R(c);SBLOCK,XP(G)::QAR2(J)
      • B(f);SBLOCK,XP(G)::QAB(J)
      • B(f);N_GUARD,XP(H)::QAR2(J)
      • B(f);N_GUARD,XS(I)::QAR2(J)
      • B(f);N_GUARD::QAR2(J),XB(f)
      • S(g);N_GUARD::S(I)
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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).