MESON Chess Problem Database

Problem Display
PID: 185100 (7b/1Q6/2qp4/1p6/PPkr1RN1/K3B3/3PP3/5B1b w - - 0 1)

Barnes, Barry Peter

Chess, 1956

7b/1Q6/2qp4/1p6/PPkr1RN1/K3B3/3PP3/5B1b

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qf7#
    • 1...Qg2
      • 2.Qxb5#
    • 1...Qf3
      • 2.Qxb5#
      • 2.exf3#
    • 1...Qe4
      • 2.Qxb5#
    • 1...Qc7
      • 2.Qxb5#
    • 1...Qc8
      • 2.Qxb5#
    • 1...Re4
      • 2.Qxc6#
    • 1...d5
      • 2.Qxc6#
  • Tries
    • 1.Bg1?
      • threat
        • 2.Se3#
      • 1...Qf3+
        • 2.exf3#
      • 1...Kd5
        • 2.Qf7#
      • 1...Qe4
        • 2.Qxb5#
      • 1...Qe8
        • 2.e3#
      • 1...Re4
        • 2.Qxc6#
      • 1...Rxf4!
    • 1.d3+?
      • 1...Kd5
        • 2.Qf7#
      • 1...Kc3!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Se3#
      • 1...Qf3+
        • 2.exf3#
      • 1...Kd5
        • 2.Qf7#
      • 1...Rxf4
        • 2.e4#
      • 1...Qe4
        • 2.Qxb5#
      • 1...Qe8
        • 2.e3#
      • 1...Re4
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • K(b);N_SPINR(c),P_SPINQ(e),S_FLIGHT::QAB(J)
    • Q(e);N_GUARD::QAB1(J),XP(d)
    • Q(e);N_GUARD,N_SPINR(c)::QAB1(J),XP(d)
    • R(c);S_CUTB(a)::QAR2(J),XQ(e)
    • P(f);S_CUTB(a)::QAR2(J),XQ(e)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(I)
      • Vars
        • Q(e);CHECK,OGATE::B(A)+P(C),XQ(e)
        • K(b);N_SPINR(c),P_SPINQ(e),S_FLIGHT::QAB(J)
        • Q(e);N_GUARD,N_SPINR(c)::QAB1(J),XP(d)
        • Q(e);::B(A)+P(C)
        • R(c);S_CUTB(a)::QAR2(J),XQ(e)
      • Refutation
        • R(c);N_SPINR(c),XR(H)
    • Try
      • P(B);CHECK
      • Vars
        • K(b);N_SPINR(c),P_SPINQ(e),S_FLIGHT::QAB(J)
      • Refutation
        • K(b);N_SPINR(c),P-FLIGHT
  • Actual
    • B(E);
    • Threat
      • S(I)
    • Vars
      • Q(e);CHECK,OGATE::B(A)+P(C),XQ(e)
      • K(b);N_SPINR(c),P_SPINQ(e),S_FLIGHT::QAB(J)
      • R(c);N_GUARD,N_SPINR(c),XR(H)::B(A)+P(C)
      • Q(e);N_GUARD,N_SPINR(c)::QAB1(J),XP(d)
      • Q(e);::B(A)+P(C)
      • R(c);S_CUTB(a)::QAR2(J),XQ(e)
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Developed and maintained by Brian Stephenson.
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