MESON Chess Problem Database

Problem Display
PID: 2345 (1r5r/1N1Q2q1/1P6/8/4pp2/2k3bR/2P5/1KB5 w - - 0 1)

Gardner, John Carey

Source?, 0000

1r5r/1N1Q2q1/1P6/8/4pp2/2k3bR/2P5/1KB5

#2

7 + 7

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Tries
    • 1.Qc6+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kb4!
    • 1.Qd3+?
      • 1...Kb4
        • 2.Qb3#
      • 1...exd3!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Bd2#
        • 2.Qc5#
      • 1...Kb4
        • 2.Qb3#
      • 1...Qd4
        • 2.Qb3#
      • 1...Qe5
        • 2.Bd2#
      • 1...Qf8
        • 2.Bd2#
      • 1...Qg5
        • 2.Bd2#
      • 1...Qc7
        • 2.Bd2#
      • 1...Qe7
        • 2.Bd2#
      • 1...Qf7
        • 2.Bd2#
      • 1...Qg8
        • 2.Bd2#
      • 1...Rbc8
        • 2.Bd2#
      • 1...Rh5
        • 2.Bd2#
      • 1...Rhc8
        • 2.Bd2#
      • 1...e3
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • Q(G);CHECK,N_PINB(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(G)
      • Refutation
        • P(c);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);N_SPINB(b),S_FLIGHT::QAR1(G)
      • Q(e);SBLOCK::QAR1(G)
      • Q(e);::B(B)
      • R(f);::B(B)
      • R(g);::B(B)
      • P(c);N_SPINB(b)::QAR2(G)
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