MESON Chess Problem Database

Problem Display
PID: 221853 (N7/8/5K2/2pkp3/B2p4/3Q4/8/8 w - - 0 1)

Tucker, Frederick G

British Chess Magazine, 1928

N7/8/5K2/2pkp3/B2p4/3Q4/8/8

#2

4 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qe2?
      • 1...Kd6
        • 2.Qxe5#
      • 1...d3
        • 2.Qxd3#
      • 1...c4
        • 2.Qxe5#
      • 1...e4!
    • 1.Qf5?
      • 1...Kd6
        • 2.Qe6#
        • 2.Qd7#
        • 2.Qxe5#
      • 1...d3
        • 2.Qxd3#
      • 1...c4
        • 2.Qxe5#
      • 1...Kc4!
    • 1.Qa6?
      • 1...d3
        • 2.Qxd3#
      • 1...c4
        • 2.Qc6#
      • 1...e4
        • 2.Sc7#
        • 2.Qe6#
      • 1...Ke4!
    • 1.Qf3+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kd6
        • 2.Qc6#
      • 1...e4!
  • Keys
    • 1.Qg3!
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Bc6#
      • 1...Kd6
        • 2.Qxe5#
      • 1...d3
        • 2.Qxd3#
      • 1...e4
        • 2.Sb6#
      • 1...c4
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • K(c);P-FLIGHT::QAB1(A),XP(d)
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(b);SBLOCK::QAR1(A),XP(d)
      • Refutation
        • P(d);
    • Try
      • Q(A);N_PINP(a),P_PINP(d)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(b);SBLOCK::QAR1(A),XP(d)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(b);::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
        • K(c);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • K(c);S_FLIGHT::QAB1(A)
      • K(c);S_FLIGHT::B(B)
      • K(c);P-FLIGHT,P_SPINP(d)::QAB1(A),XP(d)
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(d);SBLOCK::S(D)
      • P(b);SBLOCK::QAR1(A),XP(d)
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