MESON Chess Problem Database

Problem Display
PID: 121997 (1B2R3/2n1n3/3b4/5pR1/3Npk1P/4p3/Q3K3/8 w - - 0 1)

Nemo, Ottmar (Weiss, Ottmar)

Ottawa Citizen, 1888

1B2R3/2n1n3/3b4/5pR1/3Npk1P/4p3/Q3K3/8

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Scd5
      • 2.Bxd6#
    • 1...Sa6
      • 2.Bxd6#
    • 1...Se6
      • 2.Bxd6#
    • 1...Sa8
      • 2.Bxd6#
  • Tries
    • 1.Se6+?
      • 1...Sxe6
        • 2.Bxd6#
      • 1...Ke5!
  • Keys
    • 1.Qa1!
      • 1...Ke5
        • 2.Rxf5#
      • 1...Sxe8
        • 2.Se6#
      • 1...Ba3
        • 2.Se6#
      • 1...Bb4
        • 2.Se6#
      • 1...Bc5
        • 2.Se6#
      • 1...Be5
        • 2.Qf1#
      • 1...Sb5
        • 2.Se6#
      • 1...Scd5
        • 2.Se6#
        • 2.Bxd6#
      • 1...Sa6
        • 2.Se6#
        • 2.Bxd6#
      • 1...Se6
        • 2.Sxe6#
        • 2.Bxd6#
      • 1...Sa8
        • 2.Se6#
        • 2.Bxd6#
      • 1...Sed5
        • 2.Qf1#
      • 1...Sc6
        • 2.Qf1#
      • 1...Sg6
        • 2.Qf1#
      • 1...Sc8
        • 2.Qf1#
      • 1...Sg8
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 4
  • Sets
    • S(f);OGATE,P_SPINB(e)::B(F),XB(e)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(f);OGATE,P_SPINB(e),XS(C)::B(F),XB(e)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);P_SPINP(d),P_SPINS(g),S_FLIGHT::R1(E),XP(d)
      • S(f);N_GUARD,P_SPINB(e),XR(G)::S(C)
      • B(e);P_SPINS(f)::S(C)
      • B(e);SBLOCK::QAR(A)
      • S(f);N_GUARD,P_SPINB(e)::S(C)
      • S(g);::QAR(A)
HTML5 logo

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).