MESON Chess Problem Database

Problem Display
PID: 147905 (4R3/4B3/2p5/2p3p1/2P1N1Pp/1KNpkp1Q/7P/8 w - - 0 1)

Shapovalov, Evgeny Ivanovich

5th Prize, Uralski Problemist, 2008

4R3/4B3/2p5/2p3p1/2P1N1Pp/1KNpkp1Q/7P/8

#2

9 + 7

23 Die Schwalbe 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Bxc5#
    • 1...Kf4
      • 2.Bxg5#
  • Tries
    • 1.Sf2?
      • 1...Kd2
        • 2.Bxg5#
      • 1...Kxf2
        • 2.Bxc5#
      • 1...Kd4
        • 2.Bf6#
      • 1...Kf4
        • 2.Bd6#
      • 1...d2!
    • 1.Bd6?
      • 1...Kd4
        • 2.Bxc5#
      • 1...d2!
    • 1.Bf6?
      • 1...Kf4
        • 2.Bxg5#
      • 1...d2!
    • 1.Qxf3+?
      • 1...Kd4
        • 2.Bxc5#
        • 2.Bf6#
      • 1...Kxf3!
  • Keys
    • 1.Sd2!
      • 1...Kxd2
        • 2.Bxg5#
      • 1...Kf2
        • 2.Bxc5#
      • 1...Kd4
        • 2.Bf6#
      • 1...Kf4
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(c),S_FLIGHT::B(H),XP(e)
    • K(b);N_SPINP(c),S_FLIGHT::B(H),XP(f)
  • Tries
    • Try
      • S(F);
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::B(H),XP(f)
        • K(b);N_SPINP(c),S_FLIGHT,XS(F)::B(H),XP(e)
        • K(b);N_SPINP(c),S_FLIGHT::B(H)
      • Refutation
        • P(a);
    • Try
      • B(H);
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::B(H),XP(e)
      • Refutation
        • P(a);
    • Try
      • B(H);
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::B(H),XP(f)
      • Refutation
        • P(a);
    • Try
      • Q(D);CHECK,XP(c)
      • Refutation
        • K(b);P-FLIGHT,XQ(D)
  • Actual
    • S(F);
    • Vars
      • K(b);N_SPINP(c),S_FLIGHT,XS(F)::B(H),XP(f)
      • K(b);N_SPINP(c),S_FLIGHT::B(H),XP(e)
      • K(b);N_SPINP(c),S_FLIGHT::B(H)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).