MESON Chess Problem Database

Problem Display
PID: 1105 (4n3/8/Np2k1K1/2pppN2/Bn1R4/8/8/5Q2 w - - 0 1)

Gold, Samuel

The Westminster Papers, 1873

4n3/8/Np2k1K1/2pppN2/Bn1R4/8/8/5Q2

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Sc7#
    • 1...Sf6
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
    • 1...Sg7
      • 2.Sc7#
    • 1...exd4
      • 2.Qe2#
      • 2.Qe1#
    • 1...b5
      • 2.Sxc5#
  • Tries
    • 1.Sg7+?
      • 1...Kd6
        • 2.Qf8#
      • 1...Sxg7
        • 2.Qf6#
      • 1...Ke7!
    • 1.Qb5?
      • threat
        • 2.Qd7#
        • 2.Qxe8#
      • 1...exd4
        • 2.Qe2#
        • 2.Qxe8#
      • 1...e4
        • 2.Qxe8#
      • 1...Sd6
        • 2.Sc7#
        • 2.Qd7#
      • 1...Sf6
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
        • 2.Qd7#
      • 1...Sg7
        • 2.Sc7#
        • 2.Qd7#
      • 1...Sc6!
  • Keys
    • 1.Qc4!
      • 1...Sxa6
        • 2.Qxd5#
      • 1...cxd4
        • 2.Qc8#
      • 1...dxc4
        • 2.Bd7#
      • 1...exd4
        • 2.Qe2#
      • 1...Sc6
        • 2.Qxd5#
      • 1...e4
        • 2.Rxe4#
      • 1...b5
        • 2.Sxc5#
      • 1...Sa2
        • 2.Qxd5#
      • 1...Sc2
        • 2.Qxd5#
      • 1...Sd3
        • 2.Qxd5#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sf6
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Sg7
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(g);N_GUARD::S(E)
    • S(g);N_GUARD::S(E),XS(g)
    • P(e);N_GUARD::S(E),XP(b)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINP(c)::QAB(A)
        • S(g);XS(D)::QAR1(A)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::QAR2(A),XS(g)
        • S(g);N_GUARD::S(E)
      • Refutation
        • S(a);
  • Actual
    • Q(A);P_PINP(c)
    • Vars
      • S(a);N_GUARD,XS(E)::QAB1(A),XP(c)
      • P(b);OGATE,XR(C)::QAB(A)
      • P(c);N_SPINP(c),XQ(A)::B(B)
      • P(d);OGATEB,XR(C)::QAR(A)
      • S(a);N_GUARD::QAB1(A),XP(c)
      • P(d);OGATEB::R(C),XP(d)
      • P(e);N_GUARD::S(E),XP(b)
      • S(g);N_GUARD::S(E)
      • S(g);N_GUARD::S(E),XS(g)
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