MESON Chess Problem Database

Problem Display
PID: 137484 (4N3/5pRP/2N1k3/5rpK/B5Q1/B7/4q3/2n1R3 w - - 0 1)

Ellerman, Arnoldo

L'Italia Scacchistica, 1932

4N3/5pRP/2N1k3/5rpK/B5Q1/B7/4q3/2n1R3

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Sc7#
    • 1...f6
      • 2.Sc7#
  • Tries
    • 1.Rxe2+?
      • 1...Kd5
        • 2.Se7#
        • 2.Sc7#
        • 2.Qd4#
        • 2.Qe4#
      • 1...Kd7
        • 2.Qxf5#
      • 1...Sxe2!
  • Keys
    • 1.Rxf7!
      • 1...Kd5
        • 2.Sc7#
      • 1...Kxf7
        • 2.Sd8#
      • 1...Qxe1
        • 2.Qxf5#
      • 1...Qe3
        • 2.Qxf5#
      • 1...Qe4
        • 2.Qxf5#
      • 1...Qe5
        • 2.Qc4#
      • 1...Sa2
        • 2.Bb3#
      • 1...Sb3
        • 2.Bxb3#
      • 1...Sd3
        • 2.Bb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • K(e);N_SPINQ(b),N_SPINR(c),S_FLIGHT::S(I)
    • P(f);SBLOCK::S(I)
  • Tries
    • Try
      • R(A);CHECK,N_SPINQ(D),XQ(b)
      • Vars
        • K(e);P_SPINP(f),S_FLIGHT::QAB(D),XR(c)
      • Refutation
        • S(a);XR(A)
  • Actual
    • R(G);XP(f)
    • Vars
      • K(e);N_SPINQ(b),N_SPINR(c),S_FLIGHT::S(I)
      • K(e);N_SPINQ(b),N_SPINR(c),S_FLIGHT,XR(G)::S(F)
      • Q(b);N_PINQ(D),N_SPINQ(b),XR(A)::QAB1(D),XR(c)
      • Q(b);N_PINQ(D)::QAB1(D),XR(c)
      • Q(b);N_PINQ(D)::QAB(D)
      • S(a);N_GUARD::B(C)
      • S(a);N_GUARD::B(C),XS(a)
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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).