MESON Chess Problem Database

Problem Display
PID: 51579 (2N2R2/6nb/2p1rnP1/R1p5/2P2k1P/2P2NpK/1p1P4/1BB4Q w - - 0 1)

Massingham, HW

The Guardian, 1965

2N2R2/6nb/2p1rnP1/R1p5/2P2k1P/2P2NpK/1p1P4/1BB4Q

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.dxe3#
  • Tries
    • 1.Rxf6+?
      • 1...Sf5
        • 2.Rxf5#
      • 1...Rxf6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qe4#
      • 1...Kxe5
        • 2.d4#
      • 1...Rxe5
        • 2.Qf1#
      • 1...Bxg6
        • 2.Sxg6#
      • 1...Sf5
        • 2.Sd3#
      • 1...g2
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(f);OGATE::P(D),XR(f)
  • Tries
    • Try
      • R(M);CHECK,XS(g)
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::R1(M),XS(h)
      • Refutation
        • R(f);XR(M)
  • Actual
    • S(F);
    • Threat
      • QAR1(C)
    • Vars
      • K(c);N_SPINS(g),P_SPINP(d),S_FLIGHT,XS(F)::P(D)
      • R(f);SBLOCK,XS(F)::QAR(C)
      • B(i);XP(K)::S(F),XB(i)
      • S(h);N_SPINS(g),SBLOCK::S(F)
      • P(b);OGATEB::QAB(C)
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).