MESON Chess Problem Database

Problem Display
PID: 9305 (8/1N6/8/8/pk1p4/1p3Q2/8/1K3B2 w - - 0 1)

Shinkman, William Anthony

Dubuque Chess Journal, 1871

8/1N6/8/8/pk1p4/1p3Q2/8/1K3B2

#2

4 + 4

3925 The Golden Argosy 1929

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Qf8#
  • Tries
    • 1.Qe2?
      • 1...Ka3
        • 2.Qe7#
      • 1...Kc3
        • 2.Qe1#
      • 1...b2
        • 2.Qxb2#
      • 1...a3
        • 2.Qc4#
      • 1...d3!
    • 1.Qe4?
      • 1...Ka3
        • 2.Qe7#
      • 1...Kc3
        • 2.Qe1#
      • 1...a3
        • 2.Qxd4#
      • 1...b2!
    • 1.Qd5?
      • threat
        • 2.Qc5#
      • 1...Ka3
        • 2.Qc5#
        • 2.Qd6#
      • 1...Kc3
        • 2.Qa5#
      • 1...a3
        • 2.Qc4#
        • 2.Qxd4#
        • 2.Qa5#
      • 1...b2!
    • 1.Qh5?
      • threat
        • 2.Qc5#
      • 1...Ka3
        • 2.Qc5#
      • 1...Kc3
        • 2.Qa5#
      • 1...a3
        • 2.Qa5#
      • 1...b2!
    • 1.Qc6?
      • threat
        • 2.Qc5#
      • 1...Ka3
        • 2.Qc5#
        • 2.Qd6#
      • 1...a3
        • 2.Qc4#
      • 1...b2!
    • 1.Qf5?
      • threat
        • 2.Qc5#
      • 1...Ka3
        • 2.Qc5#
        • 2.Qf8#
      • 1...Kc3
        • 2.Qa5#
      • 1...a3
        • 2.Qa5#
      • 1...b2!
  • Keys
    • 1.Qf2!
      • 1...Ka3
        • 2.Qf8#
      • 1...Kc3
        • 2.Qe1#
      • 1...b2
        • 2.Qxb2#
      • 1...d3
        • 2.Qc5#
      • 1...a3
        • 2.Qxd4#

There are these versions: 208129

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(a),S_FLIGHT::QAB(C)
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(c);S_FLIGHT::QAB(C)
        • P(a);OGATEB::QAR2(C),XP(a)
        • P(b);SBLOCK::QAR1(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);P_PINP(d)
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAB(C)
        • P(b);SBLOCK::QAR2(C),XP(d)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT::QAB(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT::QAB(C)
        • P(b);::QAB1(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);SBLOCK::QAR1(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT::QAB(C)
        • P(b);::QAB1(C)
      • Refutation
        • P(a);
  • Actual
    • Q(C);
    • Vars
      • K(c);S_FLIGHT::QAB(C)
      • P(a);OGATEB::QAR2(C),XP(a)
      • P(d);OGATE::QAB1(C)
      • P(b);SBLOCK::QAR2(C),XP(d)
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