MESON Chess Problem Database

Problem Display
PID: 143208 (Q2Rb3/2r5/2prB2B/1qP1kPP1/2nn1N2/3P2P1/3N3K/8 w - - 0 1)

White, Alain Campbell

British Chess Magazine, 1893

Q2Rb3/2r5/2prB2B/1qP1kPP1/2nn1N2/3P2P1/3N3K/8

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sxc4#
    • 1...Qa5
      • 2.Sxc4#
    • 1...Qb6
      • 2.Sxc4#
    • 1...Qb7
      • 2.Sxc4#
    • 1...Qb8
      • 2.Sxc4#
    • 1...Rf7
      • 2.Sg6#
    • 1...Rg7
      • 2.Bxg7#
    • 1...Rc8
      • 2.Bg7#
    • 1...Bg6
      • 2.Sxg6#
    • 1...Bd7
      • 2.Sg6#
      • 2.Bg7#
    • 1...Bf7
      • 2.Bg7#
    • 1...Sc2
      • 2.Sf3#
    • 1...Se2
      • 2.Sf3#
    • 1...Sb3
      • 2.Sf3#
    • 1...Sf3+
      • 2.Sxf3#
    • 1...Sxf5
      • 2.Sf3#
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Qe4#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...Qxc6
        • 2.Sxc4#
      • 1...Rdxc6
        • 2.Rd5#
      • 1...Rcxc6
        • 2.Bg7#
      • 1...Bxc6
        • 2.Sg6#
      • 1...Sxd2
        • 2.Qxd6#
      • 1...Sxc6
        • 2.Sf3#
      • 1...Qb7
        • 2.Sxc4#
      • 1...Rd5
        • 2.Rxd5#
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 13
  • Sets
    • Q(c);N_GUARD::S(A),XS(a)
    • R(g);S_CUTB(h)::S(E)
    • R(g);N_GUARD::B(J),XR(g)
    • R(g);N_GUARD::B(J)
    • B(h);N_GUARD::S(E),XB(h)
    • B(h);S_CUTR(g)::B(J)
    • S(b);N_GUARD::S(A)
    • S(b);CHECK,N_GUARD::S(A),XS(b)
    • S(b);N_GUARD,XP(G)::S(A)
  • Actual
    • Q(K);XP(e)
    • Threat
      • QAR1(K)
    • Vars
      • S(b);CHECK,N_GUARD::S(A),XS(b)
      • Q(c);N_GUARD,XQ(K)::S(A),XS(a)
      • R(f);OGATE,XQ(K)::R1(L)
      • R(g);N_GUARD,XQ(K)::B(J)
      • B(h);N_GUARD,XQ(K)::S(E)
      • S(a);N_GUARD,XS(A)::QAB1(K),XR(f)
      • S(b);N_GUARD,XQ(K)::S(A)
      • Q(c);N_GUARD::S(A),XS(a)
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