MESON Chess Problem Database

Problem Display
PID: 143162 (8/4p3/4K3/B1pN4/3k1pn1/1P1B1P2/p3P1P1/q2b3Q w - - 0 1)

Winter-Wood, Carslake

British Chess Magazine, 1893

8/4p3/4K3/B1pN4/3k1pn1/1P1B1P2/p3P1P1/q2b3Q

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Bxc3#
    • 1...Qb1
      • 2.Bc3#
    • 1...Bc2
      • 2.Qxa1#
    • 1...Bxb3
      • 2.Qxa1#
    • 1...Sf2
      • 2.Qh8#
    • 1...Sh2
      • 2.Qg1#
    • 1...Se3
      • 2.Qh8#
    • 1...Se5
      • 2.Qg1#
    • 1...Sf6
      • 2.Qg1#
    • 1...Sh6
      • 2.Qg1#
    • 1...c4
      • 2.Bb6#
  • Tries
    • 1.Qxd1?
      • threat
        • 2.Bb1#
        • 2.Qxa1#
      • 1...Qxd1
        • 2.Bc3#
      • 1...c4
        • 2.Bb6#
      • 1...Qb2
        • 2.Bc2#
      • 1...Qc3
        • 2.Bxc3#
      • 1...Qb1
        • 2.Bxb1#
        • 2.Bc3#
      • 1...Sf2
        • 2.Qxa1#
      • 1...Se3
        • 2.Qxa1#
      • 1...Se5
        • 2.Qxa1#
      • 1...Qc1!
    • 1.Qg1+?
      • 1...Sf2
        • 2.Qxf2#
      • 1...Se3!
    • 1.Qh7?
      • threat
        • 2.Qe4#
      • 1...c4
        • 2.Bb6#
      • 1...Sf2
        • 2.Qg7#
        • 2.Qh8#
      • 1...Sf6!
    • 1.Qh8+?
      • 1...Se5
        • 2.Qxe5#
      • 1...Sf6!
    • 1.fxg4?
      • threat
        • 2.Qg1#
        • 2.Qh8#
      • 1...Bxb3
        • 2.Qxa1#
        • 2.Qh8#
      • 1...c4
        • 2.Bb6#
        • 2.Qg1#
      • 1...Qc1
        • 2.Qh8#
      • 1...Bc2
        • 2.Qxa1#
        • 2.Qh8#
      • 1...f3
        • 2.Qh8#
      • 1...Bxe2!
  • Keys
    • 1.Bc2!
      • 1...Bxc2
        • 2.Qxa1#
      • 1...Bxe2
        • 2.Qxa1#
      • 1...c4
        • 2.Bb6#
      • 1...Qb2
        • 2.Qxd1#
      • 1...Qc3
        • 2.Bxc3#
      • 1...Qb1
        • 2.Bc3#
      • 1...Qc1
        • 2.Bc3#
      • 1...Sf2
        • 2.Qh8#
      • 1...Sh2
        • 2.Qg1#
      • 1...Se3
        • 2.Qh8#
      • 1...Se5
        • 2.Qg1#
      • 1...Sf6
        • 2.Qg1#
      • 1...Sh6
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(a);N_GUARD::B(G),XQ(a)
    • Q(a);N_GUARD::B(G)
    • B(b);OGATE::QAB(A),XQ(a)
    • B(b);OGATE,P_PINS(H),XP(D)::QAB(A),XQ(a)
    • S(f);N_GUARD::QAB(A)
    • P(g);OGATEB::B(G)
  • Tries
    • Try
      • Q(A);XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);N_GUARD,XQ(A)::B(G)
        • P(g);OGATEB::B(G)
        • Q(a);N_GUARD::QAR(A)+B(E)
        • Q(a);N_GUARD::B(G),XQ(a)
        • S(f);::QAB(A),XQ(a)
      • Refutation
        • Q(a);
    • Try
      • Q(A);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB(A),XS(f)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(g);OGATEB::B(G)
      • Refutation
        • S(f);
    • Try
      • Q(A);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB1(A),XS(f)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • P(F);XS(f)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::QAB(A)
        • P(e);::QAB(A)
      • Refutation
        • B(b);XP(B)
  • Actual
    • B(E);
    • Vars
      • B(b);OGATE,XB(E)::QAB(A),XQ(a)
      • B(b);OGATE,XP(B)::QAB(A),XQ(a)
      • P(g);OGATEB::B(G)
      • Q(a);N_GUARD::QAR(A),XB(b)
      • Q(a);N_GUARD::B(G),XQ(a)
      • Q(a);N_GUARD::B(G)
      • S(f);N_GUARD::QAB(A)
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