MESON Chess Problem Database

Problem Display
PID: 238525 (5Kb1/1n4p1/1N3R1n/p1pPkB1N/4p1PP/2p1B3/8/3r4 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Schweizerische Schachzeitung, 1988

5Kb1/1n4p1/1N3R1n/p1pPkB1N/4p1PP/2p1B3/8/3r4

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Bf4#
    • 1...Rxd5
      • 2.Sc4#
    • 1...Bxd5
      • 2.Sd7#
    • 1...Be6
      • 2.Rxe6#
    • 1...Bh7
      • 2.Re6#
    • 1...Sf7
      • 2.Re6#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Sd7#
      • 1...Kxf6
        • 2.Sd7#
      • 1...gxf6
        • 2.Sc4#
      • 1...Be6
        • 2.Rxe6#
      • 1...Rxd5!
  • Keys
    • 1.Be6!
      • threat
        • 2.Sc4#
      • 1...Kd6
        • 2.Bf4#
      • 1...Bxe6
        • 2.Rxe6#
      • 1...Rd4
        • 2.Bf4#
      • 1...Sd6
        • 2.Sd7#
      • 1...c4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(a);SBLOCK::B(A)
    • R(a);SBLOCK,XP(D)::S(G)
    • B(j);SBLOCK,XP(D)::S(G)
    • B(j);N_GUARD::R1(H),XB(j)
    • B(j);N_GUARD::R1(H)
    • S(g);S_CUTB(j)::R1(H)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(G)
      • Vars
        • K(f);S_FLIGHT,XR(H)::S(G)
        • P(i);SBLOCK,XR(H)::S(G)
        • B(j);N_GUARD::R1(H),XB(j)
      • Refutation
        • R(a);XP(D)
  • Actual
    • B(E);
    • Threat
      • S(G)
    • Vars
      • K(f);S_FLIGHT::B(A)
      • B(j);OGATE,XB(E)::R1(H),XB(j)
      • R(a);SBLOCK::B(A)
      • S(h);SBLOCK::S(G)
      • P(e);::S(G),XP(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).