MESON Chess Problem Database

Problem Display
PID: 51607 (4Q3/8/5p2/8/2pk4/2Np2BR/8/K7 w - - 0 1)

Barrow, John Hugh

Manchester Weekly Times, 1915

4Q3/8/5p2/8/2pk4/2Np2BR/8/K7

#2

5 + 4

5257 Chess Problems by J H Barrow 2004

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Bf2#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Be5+?
      • 1...Kc5
        • 2.Qb5#
      • 1...fxe5!
    • 1.Bd6?
      • 1...d2
        • 2.Qe3#
        • 2.Qe4#
      • 1...f5
        • 2.Qe5#
        • 2.Qh8#
      • 1...Kxc3!
    • 1.Rh4+?
      • 1...Kc5
        • 2.Qb5#
      • 1...Kxc3!
    • 1.Qb5?
      • 1...Kxc3
        • 2.Qb2#
      • 1...d2
        • 2.Bf2#
      • 1...f5
        • 2.Be5#
        • 2.Qe5#
      • 1...Ke3!
    • 1.Qe6?
      • 1...Kc5
        • 2.Qd6#
      • 1...d2
        • 2.Bf2#
      • 1...f5
        • 2.Qe5#
      • 1...Kxc3!
    • 1.Qe7?
      • 1...d2
        • 2.Bf2#
      • 1...f5
        • 2.Be5#
        • 2.Qe5#
      • 1...Kxc3!
  • Keys
    • 1.Qb8!
      • 1...Kxc3
        • 2.Qb2#
      • 1...Ke3
        • 2.Qf4#
      • 1...Kc5
        • 2.Qd6#
      • 1...d2
        • 2.Bf2#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);::B(C)
    • P(d);N_GUARD::QAB1(E)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(E)
      • Refutation
        • P(d);XB(C)
    • Try
      • B(C);
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT,XS(B)
    • Try
      • R(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(E)
      • Refutation
        • K(c);S_FLIGHT,XS(B)
    • Try
      • Q(E);
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
        • P(a);::B(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(c);S_FLIGHT::QAB1(E)
        • P(a);::B(C)
        • P(d);N_GUARD::QAB1(E)
      • Refutation
        • K(c);S_FLIGHT,XS(B)
    • Try
      • Q(E);
      • Vars
        • P(a);::B(C)
      • Refutation
        • K(c);S_FLIGHT,XS(B)
  • Actual
    • Q(E);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • K(c);S_FLIGHT::QAB1(E)
      • P(a);::B(C)
      • P(d);N_GUARD::QAB1(E)
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