MESON Chess Problem Database

Problem Display
PID: 65915 (8/pB3p1K/P1r4p/Rpk2p2/p4B2/N7/8/7Q w - - 0 1)

Wickwar, Charles

British Chess Magazine, 1889

8/pB3p1K/P1r4p/Rpk2p2/p4B2/N7/8/7Q

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kb6
      • 2.Rxb5#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Rxb5#
      • 1...Kb6
        • 2.Rxb5#
      • 1...Rb6
        • 2.Qc4#
      • 1...fxe4!
    • 1.Qc1+?
      • 1...Kb4
        • 2.Rxb5#
      • 1...Kd5
        • 2.Qc4#
      • 1...Kb6
        • 2.Rxb5#
      • 1...Kd4!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Rxb5#
      • 1...Kb4
        • 2.Rxb5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Kb6
        • 2.Rxb5#
      • 1...Rb6
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(b),S_FLIGHT::R1(D),XP(b)
  • Tries
    • Try
      • Q(A);
      • Threat
        • R1(D),XP(b)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::R1(D),XP(b)
        • R(e);SBLOCK::QAR1(A)
      • Refutation
        • P(d);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::R1(D),XP(b)
        • K(c);P-FLIGHT,P_SPINR(e)::QAB1(A)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • R1(D),XP(b)
    • Vars
      • K(c);N_SPINP(b),S_FLIGHT::R1(D),XP(b)
      • K(c);P-FLIGHT,P_SPINR(e)::QAR1(A)
      • R(e);SBLOCK::QAR2(A)
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