MESON Chess Problem Database

Problem Display
PID: 98263 (3N3B/5BR1/4n3/2R1nq2/1P1kb3/1P1p1P2/K2P1p1r/5Qr1 w - - 0 1)

Loustau, Jean-Marc

Problemas, 1975

3N3B/5BR1/4n3/2R1nq2/1P1kb3/1P1p1P2/K2P1p1r/5Qr1

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh7
      • 2.Sxe6#
    • 1...Qxf3
      • 2.Sxe6#
    • 1...Qf4
      • 2.Sxe6#
    • 1...Qg5
      • 2.Sxe6#
    • 1...Qh5
      • 2.Sxe6#
    • 1...Rgg2
      • 2.Qa1#
    • 1...Rg3
      • 2.Qa1#
    • 1...Rg4
      • 2.Qa1#
    • 1...Rg5
      • 2.Qa1#
    • 1...Rg6
      • 2.Qa1#
    • 1...Rxg7
      • 2.Qa1#
    • 1...Rh1
      • 2.Qxf2#
    • 1...Rh3
      • 2.Qxf2#
    • 1...Rh4
      • 2.Qxf2#
    • 1...Rh5
      • 2.Qxf2#
    • 1...Rh6
      • 2.Qxf2#
    • 1...Rh7
      • 2.Qxf2#
    • 1...Rxh8
      • 2.Qxf2#
  • Keys
    • 1.Rg4!
      • threat
        • 2.Sc6#
      • 1...Qxg4
        • 2.Bxe5#
      • 1...Rxg4
        • 2.Qa1#
      • 1...Rxh8
        • 2.Qxf2#
      • 1...Sxd8
        • 2.Rc4#
        • 2.Rd5#
      • 1...Qf4
        • 2.Sxe6#
      • 1...Qf6
        • 2.Rxe4#
      • 1...Sf4
        • 2.Rc4#
      • 1...Sg7
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 15
  • Sets
    • Q(h);N_GUARD::S(J),XS(i)
    • Q(h);N_GUARD,XP(E)::S(J),XS(i)
    • R(a);N_GUARD::QAB(A)
    • R(a);N_GUARD,XR(I)::QAB(A)
    • R(c);N_GUARD::QAB(A),XP(b)
    • R(c);N_GUARD,XB(K)::QAB(A),XP(b)
  • Actual
    • R(I);P_PINB(f),P_PINS(g)
    • Threat
      • S(J)
    • Vars
      • Q(h);N_GUARD,N_SPINB(f),XR(I)::B(K),XS(g)
      • R(a);N_GUARD,N_SPINB(f),XR(I)::QAB(A)
      • R(c);N_GUARD,N_SPINS(g),XB(K)::QAB(A),XP(b)
      • Q(h);N_GUARD,N_SPINB(f)::S(J),XS(i)
      • Q(h);N_GUARD,N_SPINS(g)::R1(I),XB(f)
      • S(i);N_SPINB(f)::R1(G)
      • S(i);N_SPINS(g)::R1(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).