MESON Chess Problem Database

Problem Display
PID: 177417 (3R4/3N4/4pP2/1B2P3/2QPk2K/6P1/3P1n2/6B1 w - - 0 1)

Gunning, H

3rd Prize, London Transport Ty. (Busmen's Chess Review), 1961

3R4/3N4/4pP2/1B2P3/2QPk2K/6P1/3P1n2/6B1

#2

11 + 3

1111 Busmen's Chess Review 1962

SOLUTION

  • SOUND
  • Tries
    • 1.Bxf2?
      • 1...Kf5
        • 2.Qd3#
        • 2.Qc2#
      • 1...Kf3!
    • 1.Qe2+?
      • 1...Kxd4
        • 2.Qd3#
        • 2.Qc4#
      • 1...Kd5
        • 2.Sc5#
        • 2.Sb6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...Kf5!
    • 1.Qd3+?
      • 1...Kd5
        • 2.Sc5#
        • 2.Sb6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...Sxd3!
    • 1.Qc6+?
      • 1...Kxd4
        • 2.Bxf2#
        • 2.Qc4#
      • 1...Kf5!
  • Keys
    • 1.Qf1!
      • 1...Kf3
        • 2.Bc6#
      • 1...Kxd4
        • 2.Qd3#
        • 2.Qc4#
      • 1...Kd5
        • 2.Sc5#
      • 1...Kf5
        • 2.Bd3#
      • 1...Sd1
        • 2.Sc5#
        • 2.Bc6#
      • 1...Sh1
        • 2.Sc5#
        • 2.Bc6#
      • 1...Sd3
        • 2.Bc6#
      • 1...Sh3
        • 2.Sc5#
        • 2.Bc6#
      • 1...Sg4
        • 2.Sc5#
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • S(a);XQ(D)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(b);P_SPINS(a),S_FLIGHT::B(G)
      • K(b);S_FLIGHT::R(K)+S(J)
      • S(a);::B(G)
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