MESON Chess Problem Database

Problem Display
PID: 103784 (8/8/8/r4N2/r4kPK/1n2R3/3N4/5nB1 w - - 0 1)

Stefanescu, O

Revista de Sah, 1955

8/8/8/r4N2/r4kPK/1n2R3/3N4/5nB1

#2

6 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Re4#
    • 1...Ra2
      • 2.Re4#
    • 1...Ra3
      • 2.Re4#
    • 1...Re4
      • 2.Rxe4#
    • 1...Re5
      • 2.Rf3#
    • 1...Sfxd2
      • 2.Bh2#
    • 1...Sh2
      • 2.Bxh2#
    • 1...Sxe3
      • 2.Bh2#
    • 1...Sd4
      • 2.Re4#
  • Tries
    • 1.Bh2+?
      • 1...Sg3
        • 2.Bxg3#
      • 1...Sxh2!
  • Keys
    • 1.Sg7!
      • threat
        • 2.Se6#
      • 1...Rh5+
        • 2.Sxh5#
      • 1...Sxe3
        • 2.Bh2#
      • 1...Re4
        • 2.Rxe4#
      • 1...Re5
        • 2.Rf3#
      • 1...Ra6
        • 2.Sh5#
      • 1...Sd4
        • 2.Re4#
      • 1...Sc5
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::R1(C)
    • R(c);N_GUARD::R1(C),XR(c)
    • R(e);SBLOCK::R1(C)
    • S(a);N_GUARD,XS(B)::B(A)
    • S(a);N_GUARD::B(A),XS(a)
    • S(a);N_GUARD,XR(C)::B(A)
    • S(b);S_CUTR(c)::R1(C)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::B(A),XS(a)
      • Refutation
        • S(a);XB(A)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • R(e);CHECK,N_GUARD::S(F),XR(e)
      • S(a);N_GUARD,SBLOCK,XR(C)::B(A)
      • R(c);N_GUARD::R1(C),XR(c)
      • R(e);SBLOCK::R1(C)
      • R(e);N_GUARD::S(F)
      • S(b);S_CUTR(c)::R1(C)
      • S(b);S_CUTR(e)::S(F)
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).