MESON Chess Problem Database

Problem Display
PID: 64494 (1qn2RR1/6B1/1p6/7p/BQ1r1nkP/K1N3Pp/1p5P/1bb1N3 w - - 0 1)

Tuxen, Harri Viggo

1st HM., Good Companions (February), 1920

1qn2RR1/6B1/1p6/7p/BQ1r1nkP/K1N3Pp/1p5P/1bb1N3

#2

11 + 11

3132 The Good Companion Two-Mover 1922
3391 Het Half Pin Thema 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Bxd1#
    • 1...Rd3
      • 2.Be5#
      • 2.Bh6#
      • 2.Bh8#
    • 1...Sg2
      • 2.Bd1#
    • 1...Sd3
      • 2.Bd1#
      • 2.Bd7#
    • 1...Sd5
      • 2.Bd1#
    • 1...Se6
      • 2.Bd1#
    • 1...Sg6
      • 2.Bd1#
  • Tries
    • 1.Bd1+?
      • 1...Se2
        • 2.Bxe2#
      • 1...Rxd1!
    • 1.Bxd4+?
      • 1...Sg6
        • 2.Bd1#
      • 1...Bg6!
    • 1.Be5+?
      • 1...Sg6
        • 2.Bd1#
      • 1...Bg6!
    • 1.Bh6+?
      • 1...Sg6
        • 2.Bd1#
      • 1...Bg6!
    • 1.Bh8+?
      • 1...Sg6
        • 2.Bd1#
      • 1...Bg6!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Sf2#
      • 1...Rd3+
        • 2.Bc3#
      • 1...Rxd1
        • 2.Bxd1#
      • 1...Rd2
        • 2.Se3#
      • 1...Be3
        • 2.Sxe3#
      • 1...Sd3
        • 2.Bd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(e);N_GUARD,P_SPINS(f)::B(F),XR(e)
    • S(f);N_GUARD,P_SPINR(e)::B(F)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINR(e),P_SPINS(f)::B(F),XS(f)
      • Refutation
        • R(e);P_SPINS(f),XB(F)
    • Try
      • B(I);CHECK,XR(e)
      • Vars
        • S(f);P_SPINS(f)::B(F)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • B(I);CHECK
      • Vars
        • S(f);P_SPINR(e),P_SPINS(f)::B(F)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • B(I);CHECK
      • Vars
        • S(f);P_SPINR(e),P_SPINS(f)::B(F)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • B(I);CHECK
      • Vars
        • S(f);P_SPINR(e),P_SPINS(f)::B(F)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • R(e);CHECK,OGATE,P_SPINS(f)::R(K)+B(I)
      • R(e);OGATE,P_SPINS(f),XS(D)::B(F),XR(e)
      • R(e);P_SPINS(f),S_CUTB(b)::S(D)
      • B(b);N_GUARD::S(D),XB(b)
      • S(f);N_GUARD,P_SPINR(e),S_CUTB(a)::B(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).