MESON Chess Problem Database

Problem Display
PID: 38390 (4R3/2K1N2b/1N5r/3P2P1/RB1k1p1Q/3p1rP1/3np3/1n5B w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1943

4R3/2K1N2b/1N5r/3P2P1/RB1k1p1Q/3p1rP1/3np3/1n5B

#2

11 + 9

3979 Systematic Terminology 1984
15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Bc5#
    • 1...Ke4
      • 2.Qxf4#
    • 1...Rxh4
      • 2.Sc6#
    • 1...Rh5
      • 2.Sc6#
    • 1...Rc6+
      • 2.Sxc6#
    • 1...Rg6
      • 2.Sf5#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Bg6
      • 2.Sc6#
    • 1...Bg8
      • 2.Sf5#
  • Tries
    • 1.Bxd2+?
      • 1...Ke5
        • 2.Sd7#
      • 1...Kc5!
  • Keys
    • 1.g6!
      • threat
        • 2.Sf5#
        • 2.Sc6#
      • 1...Ke3
        • 2.Bc5#
      • 1...Ke4
        • 2.Qxf4#
      • 1...Ke5
        • 2.Bd6#
      • 1...Rxg6
        • 2.Sf5#
      • 1...Bxg6
        • 2.Sc6#
      • 1...Rh5
        • 2.Sc6#
      • 1...Se4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • K(f);N_SPINP(g),S_FLIGHT::B(D)
    • K(f);P-FLIGHT,P_SPINR(e)::QAR1(E),XP(g)
    • R(h);N_GUARD,N_SPINP(g),XQ(E)::S(J)
    • R(h);N_GUARD::S(J)
    • R(h);CHECK,N_GUARD::S(J),XR(h)
    • R(h);S_CUTB(i)::S(J)
    • B(i);N_GUARD::S(J),XB(i)
    • B(i);S_CUTR(h)::S(J)
    • B(i);N_GUARD::S(J)
  • Tries
    • Try
      • B(D);CHECK,XS(b)
      • Vars
        • K(f);N_SPINP(g),S_FLIGHT::S(H)
      • Refutation
        • K(f);N_SPINP(g),S_FLIGHT
  • Actual
    • P(G);
    • Threat
      • DUALS(2)
    • Vars
      • K(f);N_SPINP(g),S_FLIGHT::B(D)
      • K(f);P-FLIGHT,P_SPINR(e)::QAR1(E),XP(g)
      • R(h);XP(G)::S(J)
      • B(i);XP(G)::S(J)
      • R(h);::S(J)
      • S(b);N_SPINP(g)::S(J)
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).