MESON Chess Problem Database

Problem Display
PID: 58111 (6KN/4p3/4P2k/4p3/3RPnP1/7N/2p5/2B5 w - - 0 1)

Paros, Gyorgy

2nd HM., Magyar Sakkvilag, 1928

6KN/4p3/4P2k/4p3/3RPnP1/7N/2p5/2B5

#2

8 + 5

268 Chess Life 1958
5454 Near Snap 2012

SOLUTION

  • SOUND
  • Sets
    • 1...exd4
      • 2.Bxf4#
  • Tries
    • 1.Sg1?
      • 1...exd4
        • 2.Bxf4#
      • 1...Kg5!
    • 1.Sf2?
      • 1...exd4
        • 2.Bxf4#
      • 1...Kg5!
    • 1.Sxf4?
      • threat
        • 2.Se2#
        • 2.Sg2#
        • 2.Sd3#
        • 2.Sh3#
        • 2.Sd5#
        • 2.Sh5#
        • 2.Sfg6#
        • 2.Sf7#
      • 1...exf4
        • 2.Bxf4#
      • 1...Kg5!
  • Keys
    • 1.Rd2!
      • 1...Sxh3
        • 2.Rh2#
      • 1...Sxe6
        • 2.Rd6#
      • 1...Se2
        • 2.Rxe2#
      • 1...Sg2
        • 2.Rxg2#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sh5
        • 2.g5#
      • 1...Sg6
        • 2.Sf7#

Anticipated by 140100(1916)

This anticipates 139043(1937), 140101(1938), 157162(1946), 145956(1951), 227985(1970)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD,XR(C)::B(A),XS(b)
  • Tries
    • Try
      • S(B);
      • Vars
        • P(c);N_GUARD,XR(C)::B(A),XS(b)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • P(c);N_GUARD,XR(C)::B(A),XS(b)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(B);XS(b)
      • Threat
        • DUALS(8)
      • Vars
        • P(c);OGATE,P_SPINP(c),XS(B)::B(A),XP(c)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(C);N_PINS(b)
    • Vars
      • S(b);OGATEB,XS(B)::B(A)+R(C)
      • S(b);OGATEB,XP(F)::B(A)+R(C)
      • S(b);OGATEB::B(A)+R(C),XS(b)
      • S(b);SBLOCK::P(E)
      • S(b);SBLOCK::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).