MESON Chess Problem Database

Problem Display
PID: 223107 (4B3/NR1q3Q/Np1k1pR1/3p1P2/8/8/7p/7K w - - 0 1)

Tinney, William E

Philadelphia Times, 1885

4B3/NR1q3Q/Np1k1pR1/3p1P2/8/8/7p/7K

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Qc7#
      • 2.Qe7#
    • 1...Qb5
      • 2.Qxh2#
      • 2.Qc7#
      • 2.Qe7#
    • 1...Qxf5
      • 2.Qe7#
    • 1...Qc6
      • 2.Qxh2#
      • 2.Qe7#
    • 1...Qe6
      • 2.Qc7#
    • 1...Qc8
      • 2.Qxh2#
      • 2.Qe7#
    • 1...Qxe8
      • 2.Qc7#
    • 1...Qc7
      • 2.Qxc7#
    • 1...Qe7
      • 2.Qxe7#
    • 1...Qf7
      • 2.Qxh2#
    • 1...Qg7
      • 2.Qxh2#
    • 1...Qd8
      • 2.Qxh2#
  • Tries
    • 1.Sb5+?
      • 1...Kc6
        • 2.Qxd7#
      • 1...Qxb5
        • 2.Qxh2#
        • 2.Qc7#
        • 2.Qe7#
      • 1...Ke5!
    • 1.Sc8+?
      • 1...Kc6
        • 2.Rxb6#
        • 2.Qxd7#
      • 1...Qxc8
        • 2.Qxh2#
        • 2.Qe7#
      • 1...Ke5!
    • 1.Rxf6+?
      • 1...Qe6
        • 2.Rxe6#
        • 2.Qxh2#
        • 2.Qc7#
      • 1...Ke5!
    • 1.Rxb6+?
      • 1...Qc6
        • 2.Qc7#
      • 1...Ke5!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qxd7#
      • 1...Kxc6
        • 2.Qxd7#
      • 1...Qxf5
        • 2.Qe7#
      • 1...Qxc6
        • 2.Qxh2#
        • 2.Qe7#
      • 1...Qxe8
        • 2.Qc7#
      • 1...Qxb7
        • 2.Rxf6#
        • 2.Qxh2#
      • 1...Qxh7
        • 2.Rxf6#
      • 1...Qe6
        • 2.Qc7#
      • 1...Qc8
        • 2.Qxh2#
        • 2.Qe7#
      • 1...Qc7
        • 2.Rxf6#
        • 2.Qxh2#
        • 2.Qxc7#
      • 1...Qe7
        • 2.Qxe7#
      • 1...Qf7
        • 2.Qxh2#
      • 1...Qg7
        • 2.Qxh2#
      • 1...Qd8
        • 2.Qxh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(f);N_GUARD,XP(B)::QAB1(G)
    • Q(f);N_SPINP(e),OGATE::QAB1(G)
    • Q(f);OGATE,XB(H)::QAB1(G)
    • Q(f);OGATE::QAB1(G),XQ(f)
    • Q(f);N_GUARD::QAB1(G),XQ(f)
    • Q(f);::QAB(G),XP(a)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINQ(f)::QAB1(G),XQ(f)
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT
    • Try
      • S(E);CHECK
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT
    • Try
      • R(D);CHECK,XP(e)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(F);CHECK,XP(c)
      • Vars
        • Q(f);OGATE,P_SPINQ(f)::QAB1(G)
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAR1(G),XQ(f)
    • Vars
      • K(d);P-FLIGHT,P_SPINQ(f),XS(E)::QAB1(G),XQ(f)
      • Q(f);N_GUARD,XP(B)::QAB1(G)
      • Q(f);OGATE,XB(H)::QAB1(G)
      • Q(f);N_GUARD,XQ(G)::R(D),XP(e)
      • Q(f);N_SPINP(e),OGATE::QAB1(G)
      • Q(f);N_GUARD::QAB1(G),XQ(f)
      • Q(f);::QAB(G),XP(a)
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