MESON Chess Problem Database

Problem Display
PID: 70097 (8/3NK3/2P1R2N/1P1kpP2/2n2rR1/4Pp2/1QP5/r4b2 w - - 0 1)

Einat, Paz

2nd Prize, StrateGems, 2006

8/3NK3/2P1R2N/1P1kpP2/2n2rR1/4Pp2/1QP5/r4b2

#2

11 + 7

145 StrateGems 2008
721 Variantim 2008
23 Die Schwalbe 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qd4#
    • 1...Rxf5
      • 2.e4#
    • 1...e4
      • 2.Qd4#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Sf6#
      • 1...Ke4
        • 2.Rxe5#
      • 1...Rxf5
        • 2.Qc5#
      • 1...Ra7!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Rxe5#
      • 1...Ke4
        • 2.Sf6#
      • 1...Rxf5
        • 2.Rd6#
      • 1...Re4
        • 2.Rd6#
      • 1...e4
        • 2.Re5#
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(f);P_SPINP(g),P_SPINR(e),S_FLIGHT::QAR1(A)
    • R(e);N_GUARD,XP(F)::P(C)
    • P(g);N_GUARD,S_CUTR(e)::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(J)
      • Vars
        • K(f);P_SPINP(g),P_SPINR(e),P_SPINS(d),S_FLIGHT::R1(H),XP(g)
        • R(e);XP(F)::QAR1(A)
      • Refutation
        • R(a);P_PINS(J)
  • Actual
    • Q(A);P_PINS(d)
    • Threat
      • R1(H),XP(g)
    • Vars
      • K(f);N_SPINS(d),P_SPINP(g),P_SPINR(e),S_FLIGHT::S(J)
      • R(e);XP(F)::R1(H)
      • R(e);::R1(H)
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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).