MESON Chess Problem Database

Problem Display
PID: 155409 (3q2k1/6BN/5nBP/8/PQ6/K2p4/8/5R2 w - - 0 1)

Gamage, Frederick

Source?, 0000

3q2k1/6BN/5nBP/8/PQ6/K2p4/8/5R2

#2

8 + 4

15 British Chess Magazine 1904

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Sxf6#
      • 2.Qf8#
    • 1...Qb6
      • 2.Qf8#
    • 1...Qc7
      • 2.Sxf6#
      • 2.Qf8#
    • 1...Qd4
      • 2.Qf8#
    • 1...Qd5
      • 2.Sxf6#
      • 2.Qf8#
    • 1...Qd7
      • 2.Sxf6#
      • 2.Qf8#
    • 1...Qa8
      • 2.Sxf6#
    • 1...Qb8
      • 2.Sxf6#
    • 1...Qc8
      • 2.Sxf6#
    • 1...Qe8
      • 2.Sxf6#
    • 1...Qf8
      • 2.Qxf8#
    • 1...Sd7
      • 2.Qb3#
      • 2.Qc4#
    • 1...Sxh7
      • 2.Bf7#
    • 1...Se8
      • 2.Rf8#
      • 2.Qf8#
  • Tries
    • 1.Qb3+?
      • 1...Qd5
        • 2.Sxf6#
      • 1...Sd5!
    • 1.Qc4+?
      • 1...Qd5
        • 2.Sxf6#
      • 1...Sd5!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Sxf6#
      • 1...Qf8+
        • 2.Qxf8#
      • 1...Sxh7
        • 2.Bf7#
      • 1...Se4
        • 2.Qxd8#
      • 1...Sg4
        • 2.Qxd8#
      • 1...Sd5
        • 2.Qxd8#
      • 1...Sh5
        • 2.Qxd8#
      • 1...Sd7
        • 2.Qb3#
      • 1...Se8
        • 2.Rf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • Q(c);N_GUARD::QAR1(D)
    • Q(c);N_GUARD,P_PINP(C)::S(H),XS(b)
    • Q(c);N_GUARD::S(H),XS(b)
    • Q(c);N_GUARD,P_PINQ(D)::QAR1(D),XQ(c)
    • S(b);SBLOCK,XS(H)::B(E)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • Q(c);P_SPINQ(c)::S(H),XS(b)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(D);CHECK
      • Vars
        • Q(c);P_SPINQ(c)::S(H),XS(b)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • Q(D);P_PINQ(c)
    • Threat
      • S(H),XS(b)
    • Vars
      • Q(c);CHECK,OGATE::QAR1(D),XQ(c)
      • S(b);SBLOCK,XS(H)::B(E)
      • S(b);N_GUARD::QAR(D),XQ(c)
      • S(b);N_GUARD::QAB(D)
      • S(b);N_SPINQ(c),OGATE::R1(A)
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