MESON Chess Problem Database

Problem Display
PID: 135274 (bb1r4/n7/4RNPp/Q1B5/1pN2p2/1KP2k2/2R3pP/3n2r1 w - - 0 1)

Matthews, Robin CO

British Chess Magazine, 1950

bb1r4/n7/4RNPp/Q1B5/1pN2p2/1KP2k2/2R3pP/3n2r1

#2

10 + 11

14609 Mostly Three=Movers 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Sxd2#
    • 1...Rd6
      • 2.Se5#
    • 1...Rc8
      • 2.Sd2#
    • 1...Re8
      • 2.Sd2#
    • 1...Rf8
      • 2.Sd2#
    • 1...Rg8
      • 2.Sd2#
    • 1...Rh8
      • 2.Sd2#
    • 1...Be5
      • 2.Sxe5#
    • 1...Bd6
      • 2.Sd2#
    • 1...Sb2
      • 2.Rf2#
    • 1...Sf2
      • 2.Rxf2#
    • 1...Sxc3
      • 2.Rf2#
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qh5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sf2
        • 2.Sd2#
      • 1...Se3
        • 2.Se5#
      • 1...Sb5
        • 2.Qxa8#
      • 1...h5
        • 2.Qxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • R(k);N_GUARD::S(E),XR(k)
    • R(k);S_CUTB(j)::S(E)
    • R(k);N_GUARD::S(E)
    • B(j);N_GUARD::S(E),XB(j)
    • B(j);S_CUTR(k)::S(E)
    • S(a);N_GUARD::R1(A)
    • S(a);N_GUARD::R1(A),XS(a)
    • S(a);N_GUARD,XP(D)::R1(A)
  • Actual
    • B(G);
    • Threat
      • QAB(F)
    • Vars
      • B(i);N_GUARD,P_PINS(E)::QAB(F),XB(i)
      • S(a);SBLOCK::S(E)
      • S(h);OGATE::QAB(F),XB(i)
      • P(g);::QAB(F),XP(g)
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