MESON Chess Problem Database

Problem Display
PID: 145320 (8/P7/2nBnp2/1BbkpN2/Nr1pR2r/1P3PQp/4P2K/q2R4 w - - 0 1)

Hage, Poul

Problemnoter, 1962

8/P7/2nBnp2/1BbkpN2/Nr1pR2r/1P3PQp/4P2K/q2R4

#2

12 + 11

56 The Problemist 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qb1
      • 2.Sc3#
    • 1...Qa2
      • 2.Sc3#
    • 1...Qa3
      • 2.Sc3#
    • 1...Rc4
      • 2.Bxc4#
      • 2.bxc4#
    • 1...Bb6
      • 2.Sxb6#
    • 1...Bxd6
      • 2.Se3#
  • Keys
    • 1.Rexd4+!
      • 1...Qxd4
        • 2.Sc3#
      • 1...Rbxd4
        • 2.Bc4#
      • 1...Rhxd4
        • 2.e4#
      • 1...Bxd4
        • 2.Sb6#
      • 1...Scxd4
        • 2.a8Q#
        • 2.a8B#
      • 1...Sexd4
        • 2.Qg8#
      • 1...exd4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD::S(G),XQ(a)
    • Q(a);N_GUARD::S(G)
    • Q(a);N_GUARD,P_PINP(B)::S(G)
    • B(f);N_GUARD::S(G),XB(f)
    • B(f);SBLOCK,XB(K)::S(J)
  • Actual
    • R(H);CHECK,XP(d)
    • Vars
      • Q(a);P_SPINQ(a),XR(H)::S(G)
      • R(c);P_SPINR(c),XR(H)::B(I)
      • R(e);P_SPINR(e),XR(H)::P(B)
      • B(f);P_SPINB(f),XR(H)::S(G)
      • S(i);P_SPINS(i),S_CUTB(f),S_CUTP(h),S_CUTQ(a),S_CUTR(c),S_CUTR(e),S_CUTS(j),XR(H)::P=Q
      • S(j);P_SPINS(j),S_CUTB(f),S_CUTP(h),S_CUTQ(a),S_CUTR(c),S_CUTR(e),S_CUTS(i),XR(H)::QAB(F)
      • P(h);P_SPINP(h),XR(H)::S(J)
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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).