MESON Chess Problem Database

Problem Display
PID: 164433 (n7/2p4p/1pR1N2B/brp5/prP5/Kpkp1P2/1N3P2/1B6 w - - 0 1)

Erokhin, Vladimir Alekseevich

Probleemblad, 1978

n7/2p4p/1pR1N2B/brp5/prP5/Kpkp1P2/1N3P2/1B6

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Sd1#
    • 1...d2
      • 2.Bg7#
  • Tries
    • 1.Sxc7?
      • 1...Kd4
        • 2.Bg7#
      • 1...Rxc4
        • 2.Sxb5#
      • 1...d2
        • 2.Bg7#
      • 1...Sxc7!
    • 1.Sd8?
      • 1...Kd4
        • 2.Bg7#
      • 1...d2
        • 2.Bg7#
      • 1...Rxc4!
    • 1.Sf8?
      • 1...Kd4
        • 2.Bg7#
      • 1...d2
        • 2.Bg7#
      • 1...Rxc4!
    • 1.Rd6?
      • threat
        • 2.Rxd3#
      • 1...d2
        • 2.Bxd2#
        • 2.Bg7#
        • 2.Rd3#
      • 1...cxd6!
    • 1.Rxc7?
      • 1...Rxc4
        • 2.Sd1#
      • 1...d2
        • 2.Bg7#
      • 1...Sxc7!
  • Keys
    • 1.Sd4!
      • 1...Kxd4
        • 2.Bg7#
      • 1...Rxc4
        • 2.Sxb5#
      • 1...cxd4
        • 2.Sd1#
      • 1...d2
        • 2.Se2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(e);SBLOCK,XP(F)::S(B)
    • P(c);SBLOCK::B(I)
  • Tries
    • Try
      • S(H);XP(j)
      • Vars
        • K(b);S_FLIGHT::B(I)
        • R(e);N_GUARD,XP(F)::S(H),XR(g)
        • P(c);SBLOCK::B(I)
      • Refutation
        • S(l);XS(H)
    • Try
      • S(H);
      • Vars
        • K(b);S_FLIGHT::B(I)
        • P(c);SBLOCK::B(I)
      • Refutation
        • R(e);XP(F)
    • Try
      • S(H);
      • Vars
        • K(b);S_FLIGHT::B(I)
        • P(c);SBLOCK::B(I)
      • Refutation
        • R(e);XP(F)
    • Try
      • R(G);
      • Threat
        • R1(G),XP(c)
      • Refutation
        • P(j);XR(G)
    • Try
      • R(G);XP(j)
      • Vars
        • R(e);SBLOCK,XP(F)::S(B)
        • P(c);SBLOCK::B(I)
      • Refutation
        • S(l);XR(G)
  • Actual
    • S(H);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(H)::B(I)
      • R(e);N_GUARD,XP(F)::S(H),XR(g)
      • P(h);SBLOCK,XS(H)::S(B)
      • P(c);N_GUARD::S(H)
HTML5 logo

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).