MESON Chess Problem Database

Problem Display
PID: 258870 (5K2/7p/B1N1p2n/4Pk2/8/1p6/2bB3N/6Q1 w - - 0 1)

Waterhouse, Albert F

Manchester Weekly Times, 1893

(First published on Fri Jul 14 1893)

5K2/7p/B1N1p2n/4Pk2/8/1p6/2bB3N/6Q1

#2

7 + 6

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxb1#
    • 1...Bd1
      • 2.Bd3#
    • 1...Bd3
      • 2.Bxd3#
    • 1...Be4
      • 2.Qg5#
    • 1...Sg4
      • 2.Qxg4#
    • 1...Sf7
      • 2.Qg4#
    • 1...Sg8
      • 2.Qg4#
  • Tries
    • 1.Se7+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kxe5!
    • 1.Bxh6?
      • threat
        • 2.Qg4#
      • 1...Bd1
        • 2.Bd3#
      • 1...Ke4!
    • 1.Qf2+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kg6!
    • 1.Qe3?
      • threat
        • 2.Se7#
      • 1...Kg6
        • 2.Qg5#
      • 1...Be4
        • 2.Qg5#
      • 1...Sg8!
    • 1.Qd4?
      • threat
        • 2.Se7#
      • 1...Sg8
        • 2.Qg4#
      • 1...Kg6!
    • 1.Qf1+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kg6!
  • Keys
    • 1.Qd1!
      • 1...Ke4
        • 2.Qf3#
      • 1...Kg6
        • 2.Se7#
      • 1...Bxd1
        • 2.Bd3#
      • 1...b2
        • 2.Qxc2#
      • 1...Bb1
        • 2.Qxb1#
      • 1...Bd3
        • 2.Bxd3#
      • 1...Be4
        • 2.Qh5#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf7
        • 2.Qg4#
      • 1...Sg8
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATEB::QAB(A),XB(a)
    • B(a);N_GUARD::B(E)
    • B(a);N_GUARD::B(E),XB(a)
    • B(a);SBLOCK::QAR1(A)
    • S(e);N_GUARD::QAB1(A),XS(e)
    • S(e);N_GUARD::QAB1(A)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT,XP(D)
    • Try
      • B(B);XS(e)
      • Threat
        • QAB1(A)
      • Vars
        • B(a);N_GUARD::B(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAR1(A)
        • B(a);SBLOCK::QAR1(A)
      • Refutation
        • S(e);
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • S(e);N_GUARD::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);N_GUARD,S_FLIGHT::QAB1(A)
      • K(c);N_GUARD,S_FLIGHT::S(F)
      • B(a);N_GUARD,XQ(A)::B(E)
      • P(b);N_GUARD::QAB(A),XB(a)
      • B(a);OGATEB::QAB(A),XB(a)
      • B(a);N_GUARD::B(E),XB(a)
      • B(a);SBLOCK::QAR2(A)
      • S(e);N_GUARD::QAB1(A),XS(e)
      • S(e);N_GUARD::QAB1(A)
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