MESON Chess Problem Database

Problem Display
PID: 140691 (B7/5N2/b1n4r/5Q2/2k5/bR2B3/1n1r4/K1N5 w - - 0 1)

Hassberg, Eric Manfred

The Chess Review, 1943

B7/5N2/b1n4r/5Q2/2k5/bR2B3/1n1r4/K1N5

#2

7 + 7

56 The Problemist 1943

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qc2#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Bb5
      • 2.Qxb5#
    • 1...Bb7
      • 2.Qb5#
    • 1...Bc8
      • 2.Qb5#
    • 1...Sb4
      • 2.Qc5#
    • 1...Sd4
      • 2.Qd5#
    • 1...Sa5
      • 2.Se5#
    • 1...Se5
      • 2.Sxe5#
    • 1...Sa7
      • 2.Se5#
    • 1...Se7
      • 2.Se5#
    • 1...Sb8
      • 2.Se5#
    • 1...Sd8
      • 2.Se5#
  • Tries
    • 1.Qe4+?
      • 1...Sd4
        • 2.Qd5#
      • 1...Rd4!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Bxa6#
      • 1...Bxb7
        • 2.Qb5#
      • 1...Rd5
        • 2.Qc2#
      • 1...Bb5
        • 2.Qxb5#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sd4
        • 2.Qd5#
      • 1...Sa5
        • 2.Se5#
      • 1...Se5
        • 2.Sxe5#
      • 1...Sa7
        • 2.Se5#
      • 1...Se7
        • 2.Se5#
      • 1...Sb8
        • 2.Se5#
      • 1...Sd8
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD,SBLOCK::QAR2(E)
    • B(c);N_GUARD::QAR1(E),XB(c)
    • B(e);N_GUARD::QAB1(E),XB(e)
    • B(e);N_GUARD::QAB1(E)
    • S(f);S_CUTB(c)::QAR1(E)
    • S(f);S_CUTR(b)::QAB1(E)
    • S(f);N_GUARD::S(F)
    • S(f);N_GUARD::S(F),XS(f)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • S(f);P_SPINS(f),S_CUTR(b)::QAB1(E)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • B(G);
    • Threat
      • B(G),XB(e)
    • Vars
      • B(e);N_GUARD,XB(G)::QAB1(E)
      • R(b);N_GUARD,SBLOCK::QAR2(E)
      • B(e);N_GUARD::QAB1(E),XB(e)
      • S(f);S_CUTB(c)::QAR1(E)
      • S(f);S_CUTR(b)::QAB1(E)
      • S(f);N_GUARD::S(F)
      • S(f);N_GUARD::S(F),XS(f)
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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).