MESON Chess Problem Database

Problem Display
PID: 264930 (B7/3bBQ1p/2P1P3/1RPk1N2/6N1/3P1p1K/7b/q3r3 w - - 0 1)

Paslack, Rainer

The Problemist, 1993

B7/3bBQ1p/2P1P3/1RPk1N2/6N1/3P1p1K/7b/q3r3

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.cxd7#
    • 1...Qc3
      • 2.cxd7#
    • 1...Qd4
      • 2.cxd7#
    • 1...Qe5
      • 2.cxd7#
    • 1...Qf6
      • 2.cxd7#
    • 1...Qg7
      • 2.cxd7#
    • 1...Qb1
      • 2.cxd7#
    • 1...Qc1
      • 2.cxd7#
    • 1...Qd1
      • 2.cxd7#
    • 1...Rb1
      • 2.exd7#
    • 1...Rc1
      • 2.exd7#
    • 1...Rd1
      • 2.exd7#
    • 1...Rf1
      • 2.exd7#
    • 1...Rg1
      • 2.exd7#
    • 1...Rh1
      • 2.exd7#
    • 1...Re5
      • 2.Sf6#
    • 1...Be5
      • 2.exd7#
    • 1...Bd6
      • 2.cxd6#
  • Tries
    • 1.Sge3+?
      • 1...Ke5
        • 2.Bd6#
      • 1...Rxe3!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Se7#
      • 1...Qxf6
        • 2.cxd7#
      • 1...Qe5
        • 2.cxd7#
      • 1...Re5
        • 2.Qxd7#
      • 1...Be5
        • 2.exd7#
      • 1...Bd6
        • 2.cxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 13
  • Sets
    • Q(a);N_GUARD::B(K)+P(G),XB(f)
    • R(b);N_GUARD::QAB(J)+P(H),XB(f)
    • R(b);SBLOCK,S_CUTQ(a)::S(C)
    • B(c);S_CUTR(b)::QAB(J)+P(H),XB(f)
    • B(c);OGATE::R(D)+P(E),XB(c)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT,S_CUTR(b)::B(I)
      • Refutation
        • R(b);XS(C)
  • Actual
    • B(I);
    • Threat
      • S(F)
    • Vars
      • Q(a);N_GUARD,XB(I)::B(K)+P(G),XB(f)
      • Q(a);N_GUARD::B(K)+P(G),XB(f)
      • R(b);S_CUTB(c)::QAR2(J),XB(f)
      • B(c);S_CUTR(b)::QAB(J)+P(H),XB(f)
      • B(c);OGATE::R(D)+P(E),XB(c)
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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).