MESON Chess Problem Database

Problem Display
PID: 160477 (3R2NB/1p6/1R2Pp2/N2n4/p2k1p1Q/Pp1P4/1p6/1B4K1 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Garofalo, Antonio

Rallo, Vito

Best Problems, 2011

3R2NB/1p6/1R2Pp2/N2n4/p2k1p1Q/Pp1P4/1p6/1B4K1

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qf2#
  • Tries
    • 1.Sxb3+?
      • 1...Kc3
        • 2.Qe1#
      • 1...Ke3
        • 2.Qf2#
      • 1...Ke5
        • 2.Qg5#
        • 2.Qh5#
        • 2.d4#
      • 1...axb3!
    • 1.Bxf6+?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5!
    • 1.Rb4+?
      • 1...Kc3
        • 2.Qe1#
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5
        • 2.d4#
      • 1...Ke5!
    • 1.Rxd5+?
      • 1...Kc3
        • 2.Qe1#
      • 1...Ke3
        • 2.Qf2#
      • 1...Kxd5!
    • 1.Qf2+?
      • 1...Ke5
        • 2.d4#
      • 1...Kc3!
    • 1.Qxf6+?
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke3!
  • Keys
    • 1.Sxf6!
      • 1...Kc3
        • 2.Se4#
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5
        • 2.Sd7#
      • 1...Ke5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINP(e),N_SPINS(f),S_FLIGHT::QAB1(E)
  • Tries
    • Try
      • S(F);CHECK,XP(b)
      • Vars
        • K(d);N_SPINP(e),N_SPINS(f),P_SPINP(g),S_FLIGHT::QAB(E)
        • K(d);N_SPINP(e),N_SPINS(f),S_FLIGHT::QAB1(E)
      • Refutation
        • P(c);XS(F)
    • Try
      • B(K);CHECK,XP(g)
      • Vars
        • K(d);N_SPINP(e),N_SPINS(f),S_FLIGHT::QAB1(E)
      • Refutation
        • K(d);N_SPINP(e),N_SPINS(f),S_FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(d);N_SPINP(e),N_SPINS(f),P_SPINP(g),S_FLIGHT::QAB(E)
        • K(d);N_SPINP(e),N_SPINS(f),S_FLIGHT::QAB1(E)
        • K(d);N_SPINP(e),N_SPINS(f),OGATE,S_FLIGHT::P(D)
      • Refutation
        • K(d);N_SPINP(e),N_SPINS(f),P_SPINP(g),S_FLIGHT
    • Try
      • R(I);CHECK,XS(f)
      • Vars
        • K(d);N_SPINP(e),P_SPINP(g),S_FLIGHT::QAB(E)
        • K(d);N_SPINP(e),S_FLIGHT::QAB1(E)
      • Refutation
        • K(d);N_SPINP(e),P-FLIGHT,XR(I)
    • Try
      • Q(E);CHECK,N_PINP(e),P_PINP(g)
      • Vars
        • K(d);N_SPINS(f),OGATE,S_FLIGHT::P(D)
      • Refutation
        • K(d);N_SPINS(f),S_FLIGHT
    • Try
      • Q(E);CHECK,N_PINP(e),XP(g)
      • Vars
        • K(d);N_SPINS(f),S_FLIGHT::QAB1(E)
      • Refutation
        • K(d);N_SPINS(f),S_FLIGHT
  • Actual
    • S(J);XP(g)
    • Vars
      • K(d);N_SPINP(e),N_SPINS(f),S_FLIGHT::B(K)+S(J),DCHECK
      • K(d);N_SPINP(e),N_SPINS(f),S_FLIGHT::QAB1(E)
      • K(d);N_SPINP(e),N_SPINS(f),S_FLIGHT::S(J)
      • K(d);N_SPINP(e),N_SPINS(f),S_FLIGHT::R1(I),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).