MESON Chess Problem Database

Problem Display
PID: 44350 (3Q4/8/4p3/3pP3/RBNkB3/1P4P1/8/4K3 w - - 0 1)

Pierce, James

The Westminster Papers, 1878

3Q4/8/4p3/3pP3/RBNkB3/1P4P1/8/4K3

#2

9 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sb2?
      • 1...Ke3
        • 2.Bd2#
      • 1...Kxe5
        • 2.Bd6#
      • 1...Kxe4!
    • 1.Sd2?
      • 1...Kxe5
        • 2.Bd6#
        • 2.Qh8#
      • 1...Ke3!
    • 1.Sa3?
      • 1...Ke3
        • 2.Bd2#
      • 1...Kxe5
        • 2.Bd6#
      • 1...Kxe4!
    • 1.Se3?
      • 1...Kxe3
        • 2.Bd2#
      • 1...Kxe5
        • 2.Bd6#
      • 1...Kxe4!
    • 1.Sa5?
      • 1...Ke3
        • 2.Bd2#
      • 1...Kxe5
        • 2.Bd6#
      • 1...Kxe4!
    • 1.Sb6?
      • 1...Ke3
        • 2.Bd2#
      • 1...Kxe5
        • 2.Bd6#
      • 1...Kxe4!
    • 1.Bd2?
      • 1...Kc5
        • 2.Qb6#
      • 1...Kxe4!
    • 1.Ba5?
      • 1...Kc5
        • 2.Qb6#
      • 1...Kxe4!
    • 1.Qh4?
      • threat
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
      • 1...dxe4
        • 2.Qd8#
      • 1...dxc4!
  • Keys
    • 1.Sd6!
      • 1...Ke3
        • 2.Bd2#
      • 1...Kxe5
        • 2.Qh8#
      • 1...dxe4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::B(E)
        • K(a);N_SPINP(b),S_FLIGHT,XP(H)::B(E)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XB(G)
    • Try
      • S(F);
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::B(E)
        • K(a);N_SPINP(b),S_FLIGHT,XP(H)::B(E)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XB(G)
    • Try
      • S(F);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT,XS(F)::B(E)
        • K(a);N_SPINP(b),S_FLIGHT,XP(H)::B(E)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XB(G)
    • Try
      • S(F);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::B(E)
        • K(a);N_SPINP(b),S_FLIGHT,XP(H)::B(E)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XB(G)
    • Try
      • S(F);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::B(E)
        • K(a);N_SPINP(b),S_FLIGHT,XP(H)::B(E)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XB(G)
    • Try
      • B(E);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(I)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XB(G)
    • Try
      • B(E);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(I)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XB(G)
    • Try
      • Q(I);N_PINP(b)
      • Threat
        • DUALS(5)
      • Vars
        • P(b);OGATEB,P_SPINP(b),SBLOCK,XB(G)::QAR(I)
      • Refutation
        • P(b);XS(F)
  • Actual
    • S(F);N_PINP(b)
    • Vars
      • K(a);S_FLIGHT::B(E)
      • K(a);OGATEB,S_FLIGHT,XP(H)::QAB(I)
      • P(b);SBLOCK,XB(G)::QAR(I)+S(F)
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