MESON Chess Problem Database

Problem Display
PID: 184864 (1B6/4p1K1/2p1k3/3R4/1P6/5P2/2B1N1n1/8 w - - 0 1)

Jewetsky, Feodor Orestovich

125 Shakhmaty Zadachi (Eventski), 1908

1B6/4p1K1/2p1k3/3R4/1P6/5P2/2B1N1n1/8

#2

7 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Bb3#
    • 1...Se1
      • 2.Sf4#
    • 1...Se3
      • 2.Sf4#
    • 1...Sf4
      • 2.Sxf4#
    • 1...Sh4
      • 2.Sf4#
  • Tries
    • 1.Rd1?
      • 1...Se1
        • 2.Sf4#
      • 1...Se3
        • 2.Sf4#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Sh4
        • 2.Sf4#
      • 1...c5!
    • 1.Rd2?
      • 1...Se1
        • 2.Sf4#
      • 1...Se3
        • 2.Sf4#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Sh4
        • 2.Sf4#
      • 1...c5!
    • 1.Rd4?
      • 1...Se1
        • 2.Sf4#
      • 1...Se3
        • 2.Sf4#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Sh4
        • 2.Sf4#
      • 1...c5!
  • Keys
    • 1.Ba4!
      • 1...Kxd5
        • 2.Bb3#
      • 1...cxd5
        • 2.Sd4#
      • 1...c5
        • 2.Re5#
      • 1...Se1
        • 2.Sf4#
      • 1...Se3
        • 2.Sf4#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Sh4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,S_FLIGHT,XR(E)::B(A)
    • S(a);N_GUARD::S(B)
    • S(a);N_GUARD::S(B),XS(a)
  • Tries
    • Try
      • R(E);
      • Vars
        • S(a);N_GUARD::S(B)
        • S(a);N_GUARD::S(B),XS(a)
      • Refutation
        • P(b);
    • Try
      • R(E);
      • Vars
        • S(a);N_GUARD::S(B)
        • S(a);N_GUARD::S(B),XS(a)
      • Refutation
        • P(b);
    • Try
      • R(E);
      • Vars
        • S(a);N_GUARD::S(B)
        • S(a);N_GUARD::S(B),XS(a)
      • Refutation
        • P(b);
  • Actual
    • B(A);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(E)::B(A)
      • P(b);SBLOCK,XR(E)::S(B)
      • P(b);::R1(E)
      • S(a);N_GUARD::S(B)
      • S(a);N_GUARD::S(B),XS(a)
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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).