MESON Chess Problem Database

Problem Display
PID: 55506 (8/B1pp2N1/1pp3R1/3k4/4pP1p/1K2P1NP/2R1PPn1/7B w - - 0 1)

Tkachenko, Sergiy Ivanovich

Die Schwalbe, 2004

8/B1pp2N1/1pp3R1/3k4/4pP1p/1K2P1NP/2R1PPn1/7B

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Bxe4#
    • 1...b5
      • 2.Rd2#
      • 2.Rc5#
    • 1...c5
      • 2.Rd2#
    • 1...d6
      • 2.Rg5#
  • Tries
    • 1.S7f5?
      • threat
        • 2.Se7#
      • 1...Sxe3
        • 2.Bxe4#
      • 1...Sxf4!
    • 1.Bxb6?
      • threat
        • 2.Rd2#
        • 2.Rc5#
      • 1...Sxe3
        • 2.Bxe4#
        • 2.Rd2#
      • 1...Sxf4
        • 2.Rc5#
      • 1...Se1
        • 2.Bxe4#
        • 2.Rc5#
      • 1...c5
        • 2.Rd2#
        • 2.Rxc5#
      • 1...d6
        • 2.Rd2#
        • 2.Rg5#
      • 1...cxb6!
  • Keys
    • 1.Sxe4!
      • 1...Kxe4
        • 2.Bxg2#
      • 1...Sxe3
        • 2.Rd2#
      • 1...Sxf4
        • 2.Rg5#
      • 1...Se1
        • 2.Rg5#
      • 1...b5
        • 2.Sc3#
      • 1...c5
        • 2.Sc3#
      • 1...d6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE,P_SPINP(b)::B(A),XP(b)
    • P(f);SBLOCK::R(B)
    • P(h);SBLOCK::R(J)
  • Tries
    • Try
      • S(L);
      • Threat
        • S(L)
      • Vars
        • S(a);OGATE,P_SPINP(b),XP(F)::B(A),XP(b)
      • Refutation
        • S(a);P_SPINP(b),XP(I)
    • Try
      • B(K);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);P_SPINP(b),XP(I)::R1(B)
      • Refutation
        • P(g);XB(K)
  • Actual
    • S(G);XP(b)
    • Vars
      • K(d);OGATEB,P_SPINS(a),S_FLIGHT,XS(G)::B(A),XS(a)
      • S(a);XP(F)::R(B)
      • S(a);XP(I)::R(J)
      • S(a);::R(J)
      • P(e);::S(G)
      • P(f);SBLOCK::S(G)
      • P(h);SBLOCK::S(G)
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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).