MESON Chess Problem Database

Problem Display
PID: 287323 (1Q6/Np3K2/5p2/1p1kPN2/1P6/nR6/8/3n1B2 w - - 0 1)

Wiesel, Josef

Probleemblad, 1959

1Q6/Np3K2/5p2/1p1kPN2/1P6/nR6/8/3n1B2

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Bg2#
    • 1...fxe5
      • 2.Qxb7#
  • Tries
    • 1.Kxf6?
      • threat
        • 2.Qxb7#
      • 1...b6
        • 2.Qb7#
        • 2.Qa8#
      • 1...Ke4!
    • 1.Re3?
      • threat
        • 2.Qd6#
        • 2.Qxb7#
        • 2.Qd8#
      • 1...Sc4
        • 2.Bg2#
        • 2.Qxb7#
      • 1...b6
        • 2.Qd6#
        • 2.Qb7#
        • 2.Qa8#
        • 2.Qd8#
      • 1...Sxe3!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...fxe5
        • 2.Qd8#
      • 1...Sc4
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::B(A)
    • P(e);SBLOCK,XP(D)::QAB(H),XP(f)
  • Tries
    • Try
      • K(G);P-FLIGHT,XP(e)
      • Threat
        • QAB(H),XP(f)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • DUALS(3)
      • Refutation
        • S(a);XR(B)
  • Actual
    • S(E);
    • Threat
      • QAR1(H)
    • Vars
      • K(d);P-FLIGHT::QAR2(H)
      • P(e);SBLOCK,XP(D)::QAR(H)
      • S(b);SBLOCK::R(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).