MESON Chess Problem Database

Problem Display
PID: 49480 (4N1B1/p1p1n3/2n1N3/4kp2/1pP2R2/1P5b/2K1p3/6BQ w - - 0 1)

Anonymous

Huddersfield College Magazine, 1879

4N1B1/p1p1n3/2n1N3/4kp2/1pP2R2/1P5b/2K1p3/6BQ

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qh8#
    • 1...Bg2
      • 2.Qh8#
    • 1...Bg4
      • 2.Qh8#
    • 1...Sd4+
      • 2.Bxd4#
    • 1...Sa5
      • 2.Bd4#
    • 1...Sb8
      • 2.Bd4#
    • 1...Sd8
      • 2.Bd4#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sg6
      • 2.Qd5#
    • 1...Sc8
      • 2.Qd5#
    • 1...Sxg8
      • 2.Qd5#
  • Tries
    • 1.Qxh3?
      • threat
        • 2.Qe3#
        • 2.Qh8#
      • 1...Sd4+
        • 2.Bxd4#
      • 1...Sxg8
        • 2.Qxf5#
        • 2.Qe3#
      • 1...e1Q
        • 2.Qh8#
      • 1...e1R
        • 2.Qh8#
      • 1...Sd5
        • 2.Qxf5#
      • 1...Sg6
        • 2.Qxf5#
        • 2.Qe3#
      • 1...e1S+!
  • Keys
    • 1.Bxa7!
      • 1...Sd4+
        • 2.Bxd4#
      • 1...e1S+
        • 2.Qxe1#
      • 1...Sxa7
        • 2.Qa1#
      • 1...Sxg8
        • 2.Qd5#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Bf1
        • 2.Qh8#
      • 1...Bg2
        • 2.Qh8#
      • 1...Bg4
        • 2.Qh8#
      • 1...Sa5
        • 2.Bd4#
        • 2.Qa1#
      • 1...Sb8
        • 2.Bd4#
        • 2.Qa1#
      • 1...Sd8
        • 2.Bd4#
        • 2.Qa1#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sg6
        • 2.Qd5#
      • 1...Sc8
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • B(b);OGATE::QAB(B)
    • S(f);CHECK,N_GUARD::B(A),XS(f)
    • S(f);N_GUARD::B(A)
    • S(i);N_GUARD::QAR1(B),XS(i)
    • S(i);N_GUARD::QAR1(B)
    • S(i);N_GUARD,XB(I)::QAR1(B)
  • Tries
    • Try
      • Q(B);XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(f);CHECK,N_GUARD::B(A),XS(f)
        • P(a);::QAB(B)
        • S(i);N_GUARD::QAR1(B),XP(e)
      • Refutation
        • P(a);CHECK
  • Actual
    • B(A);XP(g)
    • Vars
      • S(f);CHECK,N_GUARD::B(A),XS(f)
      • P(a);CHECK,OGATEB::QAR(B),XS(a)
      • S(f);N_GUARD,XB(A)::QAB(B)
      • S(i);N_GUARD,XB(I)::QAR1(B)
      • P(a);OGATEB::QAR(B),XQ(a)
      • P(a);OGATEB::QAR(B),XB(a)
      • P(a);OGATEB::QAR(B),XR(a)
      • B(b);OGATE::QAB(B)
      • S(i);N_GUARD::QAR1(B),XS(i)
      • S(i);N_GUARD::QAR1(B)
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