MESON Chess Problem Database

Problem Display
PID: 213435 (2q1R2b/1QpPn1Np/2n5/2PPPRP1/2B1k1pN/1P4P1/3K4/6B1 w - - 0 1)

Loustau, Jean-Marc

Phenix, 2019

2q1R2b/1QpPn1Np/2n5/2PPPRP1/2B1k1pN/1P4P1/3K4/6B1

#2

15 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Bd3#
    • 1...Sa5
      • 2.Bd3#
    • 1...Sxe5
      • 2.Rf4#
    • 1...Sa7
      • 2.Bd3#
    • 1...Sb8
      • 2.Bd3#
    • 1...Sd8
      • 2.Bd3#
    • 1...Sxd5
      • 2.Bd3#
    • 1...Sg8
      • 2.Rf4#
  • Tries
    • 1.Rf1?
      • threat
        • 2.Re1#
      • 1...Kxe5
        • 2.Re1#
      • 1...Sxd5
        • 2.Bd3#
      • 1...Sf5
        • 2.Rf4#
      • 1...Sd4!
    • 1.Rxe7?
      • threat
        • 2.Rf4#
      • 1...Sxe7
        • 2.Bd3#
      • 1...Qf8!
    • 1.Qxc6?
      • threat
        • 2.Bd3#
      • 1...Sxc6
        • 2.Rf4#
      • 1...Qa6!
  • Keys
    • 1.Bf1!
      • threat
        • 2.Bg2#
      • 1...Kxd5
        • 2.Bg2#
      • 1...Sxe5
        • 2.Rf4#
      • 1...Sd4
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • S(c);::B(E)
    • S(c);SBLOCK,XP(I)::R1(J)
    • S(e);SBLOCK,XP(H)::B(E)
    • S(e);::R1(J)
  • Tries
    • Try
      • R(J);
      • Threat
        • R(J)
      • Vars
        • K(a);P-FLIGHT,P_SPINS(e),XP(I)::R(J)
        • S(e);SBLOCK,XP(H)::B(E)
        • S(e);::R1(J)
      • Refutation
        • S(c);
    • Try
      • R(O);XS(e)
      • Threat
        • R1(J)
      • Vars
        • S(c);XR(O)::B(E)
      • Refutation
        • Q(g);
    • Try
      • Q(L);XS(c)
      • Threat
        • B(E)
      • Vars
        • S(e);XQ(L)::R1(J)
      • Refutation
        • Q(g);
  • Actual
    • B(E);
    • Threat
      • B(E)
    • Vars
      • K(a);P_SPINS(c),S_FLIGHT,XP(H)::B(E)
      • S(c);SBLOCK,XP(I)::R1(J)
      • S(c);::B(E)
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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).