MESON Chess Problem Database

Problem Display
PID: 139252 (8/B1pQR3/2p2p2/Rn3P1B/4Nk1K/p1pP3P/4P2r/1b3nN1 w - - 0 1)

Swords, WJ

The Problemist, 1937

8/B1pQR3/2p2p2/Rn3P1B/4Nk1K/p1pP3P/4P2r/1b3nN1

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Sxe2#
    • 1...Rxh3+
      • 2.Sxh3#
    • 1...Sd2
      • 2.e3#
    • 1...Sg3
      • 2.e3#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Re4#
      • 1...Rxh3+
        • 2.Sgxh3#
        • 2.Sfxh3#
      • 1...Bxd3
        • 2.Sxd3#
      • 1...Sd2
        • 2.Be3#
        • 2.e3#
      • 1...Sg3
        • 2.Be3#
        • 2.e3#
      • 1...Sd6!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Re4#
      • 1...Rxh3+
        • 2.Sxh3#
      • 1...Rxe2
        • 2.Sxe2#
      • 1...Bxd3
        • 2.Sxd3#
      • 1...Sd6
        • 2.Se6#
      • 1...Sd2
        • 2.e3#
      • 1...Sg3
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);N_PINP(D),XP(B)::S(A),XR(c)
    • R(c);CHECK,XP(D)::S(A),XR(c)
    • S(b);N_GUARD::P(B)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(L)
      • Vars
        • B(a);XP(C)::S(E),XB(a)
      • Refutation
        • S(g);
  • Actual
    • S(E);
    • Threat
      • R1(L)
    • Vars
      • R(c);CHECK,XP(D)::S(A),XR(c)
      • R(c);N_PINP(D),XP(B)::S(A),XR(c)
      • B(a);XP(C)::S(E),XB(a)
      • S(g);::S(E)
      • S(b);N_GUARD::P(B)
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).