MESON Chess Problem Database

Problem Display
PID: 119058 (1N1N4/1Pk5/8/8/2K4p/3pB2P/3R4/3Q4 w - - 0 1)

Wash, Benjamin S

Chess Journal, 1888

1N1N4/1Pk5/8/8/2K4p/3pB2P/3R4/3Q4

#2

8 + 3

15 British Chess Magazine 1910
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4?
      • 1...Kxb8
        • 2.Bf4#
      • 1...Kxd8
        • 2.Qd7#
      • 1...Kd6!
    • 1.Qg4?
      • 1...Kxb8
        • 2.Qc8#
        • 2.Qf4#
      • 1...Kxd8
        • 2.Qd7#
      • 1...Kd6!
    • 1.Qh5?
      • 1...Kd6
        • 2.Qc5#
      • 1...Kxb8
        • 2.Qe5#
      • 1...Kxd8!
    • 1.Qe1?
      • 1...Kd6
        • 2.Bf4#
      • 1...Kxd8
        • 2.Bb6#
      • 1...Kxb8!
  • Keys
    • 1.Qe2!
      • 1...Kd6
        • 2.Bf4#
      • 1...Kxb8
        • 2.Qh2#
      • 1...Kxd8
        • 2.Bb6#
      • 1...dxe2
        • 2.Sa6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT,XS(G)::B(C)
        • K(c);P_SPINP(a),S_FLIGHT,XS(H)::QAR1(A)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);P_SPINP(a),S_FLIGHT,XS(H)::QAR1(A)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);P_SPINP(a),S_FLIGHT::QAB1(A)
        • K(c);S_FLIGHT,XS(G)::QAB(A)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT,XS(H)
    • Try
      • Q(A);
      • Vars
        • K(c);P_SPINP(a),S_FLIGHT::B(C)
        • K(c);P_SPINP(a),S_FLIGHT,XS(H)::B(C)
      • Refutation
        • K(c);S_FLIGHT,XS(G)
  • Actual
    • Q(A);
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT::B(C)
      • K(c);S_FLIGHT,XS(G)::QAB(A)
      • K(c);P_SPINP(a),S_FLIGHT,XS(H)::B(C)
      • P(a);XQ(A)::S(G)
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