MESON Chess Problem Database

Problem Display
PID: 148266 (nR6/3pQ3/r2N3K/2k1BPp1/b1P5/P3p3/3N2Bb/nq6 w - - 0 1)

Goldstein, Alexander

L'Italia Scacchistica, 1950

nR6/3pQ3/r2N3K/2k1BPp1/b1P5/P3p3/3N2Bb/nq6

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4
      • 2.axb4#
    • 1...Rxd6+
      • 2.Qxd6#
    • 1...Bxe5
      • 2.Qxe5#
    • 1...Bb3
      • 2.Rb5#
    • 1...Bc6
      • 2.S6e4#
    • 1...Sb6
      • 2.Sb7#
  • Keys
    • 1.Qf6!
      • threat
        • 2.Bd4#
      • 1...Rxd6
        • 2.Qxd6#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Qe4
        • 2.S6xe4#
      • 1...Qd3
        • 2.Sb7#
      • 1...Qb2
        • 2.S6e4#
      • 1...Sc2
        • 2.S6e4#
      • 1...Sb3
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • Q(b);OGATE::P(C),XQ(b)
    • R(h);CHECK,OGATE,P_SPINR(h),XS(G)::QAB1(I),XR(h)
    • B(c);OGATE,XB(E)::QAR2(I),XB(c)
    • B(e);N_GUARD,S_CUTQ(b)::R1(J)
    • B(e);N_PINS(G),SBLOCK::QAB(I)+S(G),DCHECK
    • S(j);N_PINS(G),SBLOCK::QAB(I)+S(G),DCHECK
  • Actual
    • Q(I);N_SPINS(G)
    • Threat
      • B(E)
    • Vars
      • R(h);OGATE,P_PINQ(I),XS(G)::QAB1(I),XR(h)
      • B(c);OGATE,XB(E)::QAR2(I),XB(c)
      • Q(b);N_GUARD::S(G),XQ(b)
      • Q(b);N_GUARD::S(G)
      • S(a);S_CUTQ(b)::S(G)
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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).