MESON Chess Problem Database

Problem Display
PID: 142356 (1b6/3B1p2/Pp3P2/p2kp3/3p4/Q2K1P2/7B/8 w - - 0 1)

Simpson, Rev. R

British Chess Magazine, 1891

1b6/3B1p2/Pp3P2/p2kp3/3p4/Q2K1P2/7B/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...e4+
      • 2.fxe4#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qc6#
      • 1...e4+
        • 2.fxe4#
      • 1...Kd6
        • 2.Qc6#
      • 1...dxc3!
    • 1.a7?
      • threat
        • 2.a8Q#
        • 2.a8B#
      • 1...e4+
        • 2.fxe4#
      • 1...Bd6
        • 2.a8Q#
        • 2.a8B#
      • 1...Bc7
        • 2.a8Q#
        • 2.a8B#
      • 1...a4
        • 2.a8Q#
        • 2.a8B#
      • 1...b5
        • 2.a8Q#
        • 2.a8B#
      • 1...Bxa7!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qc6#
      • 1...e4+
        • 2.fxe4#
      • 1...Kd6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(d);CHECK,OGATE::P(D),XP(d)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • P(d);CHECK,OGATE::P(D),XP(d)
        • K(c);P-FLIGHT,P_SPINP(d)::QAR1(B)
      • Refutation
        • P(a);XQ(B)
    • Try
      • P(E);
      • Threat
        • P=Q
      • Vars
        • P(d);CHECK,OGATE::P(D),XP(d)
        • B(g);::P=Q
        • P(b);::P=Q
        • P(e);::P=Q
      • Refutation
        • B(g);XP(E)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • P(d);CHECK,OGATE::P(D),XP(d)
      • K(c);P-FLIGHT,P_SPINP(d)::QAR1(B)
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