MESON Chess Problem Database

Problem Display
PID: 285384 (1N2B3/1nB5/b7/1Rb2P2/2k5/2p2K2/P1N1P3/8 w - - 0 1)

Kupper, Josef

Zurcher Woche, 1955

1N2B3/1nB5/b7/1Rb2P2/2k5/2p2K2/P1N1P3/8

#2

9 + 5

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Bf7#
    • 1...Bd4
      • 2.Sa3#
    • 1...Bxb5
      • 2.Bf7#
  • Tries
    • 1.Se3+?
      • 1...Kd4
        • 2.Sc6#
      • 1...Bxe3!
    • 1.Rb4+?
      • 1...Kd5
        • 2.Bc6#
        • 2.Bf7#
        • 2.e4#
      • 1...Bxb4!
  • Keys
    • 1.Sd7!
      • 1...Kxb5
        • 2.Se5#
      • 1...Kd5
        • 2.Sb6#
      • 1...Bxb5
        • 2.Bf7#
      • 1...Bg1
        • 2.Se5#
      • 1...Bf2
        • 2.Se5#
      • 1...Ba3
        • 2.Se5#
        • 2.Sb6#
      • 1...Be3
        • 2.Se5#
      • 1...Bb4
        • 2.Se5#
        • 2.Sb6#
      • 1...Bd4
        • 2.Sa3#
      • 1...Bb6
        • 2.Se5#
        • 2.Sxb6#
      • 1...Bd6
        • 2.Sb6#
      • 1...Ba7
        • 2.Se5#
      • 1...Be7
        • 2.Se5#
        • 2.Sb6#
      • 1...Bf8
        • 2.Se5#
        • 2.Sb6#
      • 1...Sa5
        • 2.Rxc5#
      • 1...Sd6
        • 2.Rxc5#
      • 1...Sd8
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,P_SPINB(c),S_FLIGHT::B(I)
    • B(c);N_GUARD,SBLOCK::S(B)
    • B(d);SBLOCK,XR(E)::B(I)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,S_CUTB(c)::S(H)
      • Refutation
        • B(c);XS(B)
    • Try
      • R(E);CHECK
      • Refutation
        • B(c);XR(E)
  • Actual
    • S(H);
    • Vars
      • K(b);N_GUARD,S_FLIGHT,XR(E)::B(I)+S(H)
      • K(b);P_SPINB(c),S_FLIGHT::S(H)
      • B(d);SBLOCK,XR(E)::B(I)
      • B(c);::S(H)
      • B(c);N_GUARD,SBLOCK::S(B)
      • B(c);N_GUARD::S(H)
      • S(e);N_GUARD::R1(E),XB(c)
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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).