MESON Chess Problem Database

Problem Display
PID: 38549 (8/3R1p2/2p2N1B/1r1n1NKB/1pQ1P2p/3n4/1ppk2p1/1R2bbr1 w - - 0 1)

Neumann, Itzhak

Recomm., BCF 016. Ty., 1934-1935

8/3R1p2/2p2N1B/1r1n1NKB/1pQ1P2p/3n4/1ppk2p1/1R2bbr1

#2

9 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Kxh4#
    • 1...Sc5
      • 2.Kg4#
    • 1...Sxf6
      • 2.Kxf6#
  • Tries
    • 1.exd5?
      • threat
        • 2.Se4#
      • 1...Sf2
        • 2.Kxh4#
      • 1...Sc5
        • 2.Kg4#
      • 1...cxd5!
  • Keys
    • 1.e5!
      • threat
        • 2.Se4#
      • 1...Sxf6
        • 2.Kxf6#
      • 1...Sf2
        • 2.Kxh4#
      • 1...Sc5
        • 2.Kg4#
      • 1...Sc3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(h);P_SPINS(l)::B(H)+K(E),XP(j)
    • S(h);N_GUARD,P_SPINS(l)::B(H)+K(E)
    • S(l);P_PINS(D),P_SPINS(h),XS(G)::B(H)+K(E),XS(l)
  • Tries
    • Try
      • P(C);XS(l)
      • Threat
        • S(G)
      • Vars
        • S(h);::B(H)+K(E),XP(j)
        • S(h);N_GUARD::B(H)+K(E)
      • Refutation
        • P(m);XP(C)
  • Actual
    • P(C);
    • Threat
      • S(G)
    • Vars
      • S(l);P_SPINS(h),XS(G)::B(H)+K(E),XS(l)
      • S(h);P_SPINS(l)::B(H)+K(E),XP(j)
      • S(h);N_GUARD,P_SPINS(l)::B(H)+K(E)
      • S(l);N_GUARD,P_SPINS(h),SBLOCK::QAB(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).