MESON Chess Problem Database

Problem Display
PID: 2211 (3KN1b1/5p2/3pkp2/7P/3P1P2/2Q5/8/8 w - - 0 1)

Cook, Eugene Beauharnais

American Chess Nuts, 1868

3KN1b1/5p2/3pkp2/7P/3P1P2/2Q5/8/8

#2

6 + 5

5078 The Chess Compositions of E B Cook (Keidanz) 1927

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qc8#
  • Tries
    • 1.Qa5?
      • threat
        • 2.Sc7#
        • 2.Sg7#
        • 2.f5#
      • 1...Bh7
        • 2.Sc7#
        • 2.Sg7#
      • 1...f5
        • 2.d5#
      • 1...d5!
    • 1.Qd3?
      • threat
        • 2.Sc7#
        • 2.Qe4#
        • 2.d5#
      • 1...Bh7
        • 2.Sc7#
        • 2.d5#
      • 1...d5
        • 2.f5#
      • 1...f5
        • 2.d5#
      • 1...Kd5!
    • 1.Qc4+?
      • 1...d5
        • 2.Qc8#
      • 1...Kf5!
    • 1.Qc5?
      • threat
        • 2.Sc7#
        • 2.Sg7#
        • 2.f5#
      • 1...d5
        • 2.Sg7#
        • 2.Qc8#
      • 1...f5
        • 2.Qxd6#
        • 2.d5#
      • 1...Bh7
        • 2.Sc7#
        • 2.Sg7#
      • 1...dxc5!
    • 1.Qc6?
      • threat
        • 2.Sg7#
        • 2.Qe4#
      • 1...f5
        • 2.Qxd6#
        • 2.d5#
      • 1...Bh7
        • 2.Sg7#
      • 1...Kf5!
    • 1.f5+?
      • 1...Kd5
        • 2.Sxf6#
      • 1...Kxf5!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Sg7#
        • 2.Qe4#
        • 2.f5#
      • 1...Kf5
        • 2.Sg7#
      • 1...Bh7
        • 2.Sg7#
      • 1...d5
        • 2.f5#
      • 1...f5
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);SBLOCK::P(B)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(a);SBLOCK::P(C)
        • P(c);::P(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • P(a);P_SPINP(a),SBLOCK::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);P_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::S(F)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • P(C);CHECK
      • Vars
        • K(b);S_FLIGHT::S(F),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XP(C)
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);S_FLIGHT::S(F)
      • B(e);::S(F)
      • P(a);::P(C)
      • P(c);SBLOCK::P(B)
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