MESON Chess Problem Database

Problem Display
PID: 7543 (2n5/1pBR4/5R2/1B1N4/4kP2/2P1prp1/5bK1/8 w - - 0 1)

Rychkov, Vladimir Nikolaevich

1st HM., Kaiev MT, 1991

2n5/1pBR4/5R2/1B1N4/4kP2/2P1prp1/5bK1/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Rxf4#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Bd3#
        • 2.Rd4#
      • 1...Sd6
        • 2.Bd3#
        • 2.Re7#
      • 1...e2!
    • 1.Sb6?
      • threat
        • 2.Bd3#
        • 2.Rd4#
      • 1...Sd6
        • 2.Re7#
      • 1...e2!
    • 1.Se7?
      • threat
        • 2.Bd3#
        • 2.Re6#
        • 2.Rd4#
      • 1...Sxe7
        • 2.Bd3#
        • 2.Rd4#
      • 1...e2
        • 2.Re6#
      • 1...Sd6!
    • 1.Re7+?
      • 1...Kxd5
        • 2.Rf5#
        • 2.Re5#
      • 1...Sxe7!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Re6#
      • 1...Kxe3
        • 2.Re6#
      • 1...Rxe3
        • 2.Rd4#
      • 1...Bxe3
        • 2.Bd3#
      • 1...Sd6
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(c);OGATE,XP(C)::R1(F),XR(c)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);N_GUARD::R(H)
      • Refutation
        • P(b);
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);::R(F)
      • Refutation
        • S(g);
    • Try
      • R(H);CHECK
      • Refutation
        • S(g);XR(H)
  • Actual
    • S(E);XP(b)
    • Threat
      • R(F)
    • Vars
      • K(e);P-FLIGHT,XS(E)::R(F)
      • R(c);SBLOCK,XS(E)::R1(H)
      • B(a);SBLOCK,XS(E)::B(D)
      • S(g);N_GUARD::R(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).