MESON Chess Problem Database

Problem Display
PID: 68891 (8/3p2K1/3p4/4k3/2pNn2N/2B5/4RPR1/Q7 w - - 0 1)

Kidson, Henry Edwin

The Chess Players' Quarterly Chronicle, 1871

8/3p2K1/3p4/4k3/2pNn2N/2B5/4RPR1/Q7

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sg6#
  • Tries
    • 1.Qg1?
      • 1...Kf4
        • 2.Sg6#
      • 1...d5
        • 2.Qh2#
      • 1...Kd5!
    • 1.Qa3?
      • 1...Kf4
        • 2.Sg6#
      • 1...d5
        • 2.Sg6#
      • 1...Kd5!
    • 1.Qa5+?
      • 1...Kf4
        • 2.Sg6#
        • 2.Qf5#
      • 1...d5!
    • 1.Qa6?
      • 1...Kf4
        • 2.Sg6#
      • 1...d5
        • 2.Sg6#
        • 2.Qf6#
      • 1...Kd5!
    • 1.Qa8?
      • threat
        • 2.Sg6#
        • 2.Rxe4#
        • 2.Qxe4#
      • 1...Kf4
        • 2.Sg6#
        • 2.Rxe4#
        • 2.Qxe4#
      • 1...d5!
    • 1.f4+?
      • 1...Kxf4
        • 2.Sg6#
      • 1...Kd5!
  • Keys
    • 1.Qh1!
      • 1...Kf4
        • 2.Sg6#
      • 1...Kd5
        • 2.Rg5#
      • 1...d5
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINS(b),S_FLIGHT::S(G)
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT::S(G)
        • P(d);SBLOCK::QAB(A)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT::S(G)
        • P(d);SBLOCK::S(G)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(A);
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT::S(G)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • P(d);
    • Try
      • P(C);CHECK
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT,XP(C)::S(G)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);N_SPINS(b),S_FLIGHT::S(G)
      • K(c);N_SPINS(b),P-FLIGHT::R(D)
      • P(d);SBLOCK::QAB(A)
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Developed and maintained by Brian Stephenson.
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