MESON Chess Problem Database

Problem Display
PID: 2341 (3R4/3r4/r2p4/Rb5Q/pK1k4/2pP4/4Pb2/1N6 w - - 0 1)

Gardner, John Carey

Source?, 0000

3R4/3r4/r2p4/Rb5Q/pK1k4/2pP4/4Pb2/1N6

#2

7 + 8

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qc5#
    • 1...Rb7
      • 2.Qc5#
    • 1...Re7
      • 2.Qc5#
    • 1...Rf7
      • 2.Qc5#
    • 1...Rg7
      • 2.Qc5#
    • 1...Rh7
      • 2.Qc5#
  • Tries
    • 1.Qg4+?
      • 1...Ke3
        • 2.Qe4#
      • 1...Kd5
        • 2.Qe4#
      • 1...Ke5!
    • 1.Qd5+?
      • 1...Ke3
        • 2.Qe4#
      • 1...Kxd5!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qe4#
      • 1...Ke3
        • 2.Qe4#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Re7
        • 2.Qc5#
      • 1...Bc6
        • 2.Qxf2#
      • 1...d5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(h);P_SPINP(g)::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(F)
        • K(d);P-FLIGHT,P_SPINB(e)::QAB1(F)
      • Refutation
        • K(d);P_SPINB(e),S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(F)
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(e),XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(d);S_FLIGHT::QAR1(F)
      • B(e);OGATE,XP(C)::QAR1(F),XB(e)
      • R(h);P_SPINP(g)::QAB1(F)
      • B(e);::QAB(F),XB(a)
      • P(g);SBLOCK::QAR2(F)
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