MESON Chess Problem Database

Problem Display
PID: 63290 (b1N5/r1p5/8/p1kq3Q/3R1p2/P1K1b3/2R5/5BB1 w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

Chess, 1945

b1N5/r1p5/8/p1kq3Q/3R1p2/P1K1b3/2R5/5BB1

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qxd5#
    • 1...Rb7
      • 2.Qxd5#
    • 1...Bd2+
      • 2.Kxd2#
    • 1...Bxd4+
      • 2.Kd2#
  • Tries
    • 1.Bxe3?
      • threat
        • 2.Kb2#
        • 2.Kd2#
      • 1...Kc6
        • 2.Qxd5#
      • 1...Rb7
        • 2.Kd2#
        • 2.Qxd5#
      • 1...fxe3!
    • 1.Rdd2?
      • threat
        • 2.Kb2#
      • 1...Qe5+
        • 2.Kb3#
      • 1...Kc6
        • 2.Qxd5#
      • 1...Rb7
        • 2.Qxd5#
      • 1...Bd4+!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Kb2#
      • 1...Qe5+
        • 2.Kb3#
      • 1...Bd4+
        • 2.Kd2#
      • 1...Kc6
        • 2.Qxd5#
      • 1...Rb7
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(d);N_SPINQ(e),P-FLIGHT::QAB1(G),XQ(e)
    • R(f);S_CUTB(h)::QAR1(G),XQ(e)
    • B(a);CHECK::R(C)+K(E),XB(a)
    • B(a);CHECK,P_SPINB(a),XR(F)::R(C)+K(E)
  • Tries
    • Try
      • B(B);XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);N_SPINQ(e),P-FLIGHT::QAB1(G),XQ(e)
      • Refutation
        • P(b);XB(B)
    • Try
      • R(F);P_PINB(a)
      • Threat
        • R(C)+K(E)
      • Vars
        • Q(e);CHECK::R(C)+K(E)
        • K(d);N_SPINB(a),N_SPINQ(e),P-FLIGHT::QAB1(G),XQ(e)
        • R(f);S_CUTB(h)::QAR1(G),XQ(e)
      • Refutation
        • B(a);CHECK
  • Actual
    • R(F);P_PINB(a)
    • Threat
      • R(C)+K(E)
    • Vars
      • Q(e);CHECK::R(C)+K(E)
      • B(a);CHECK::R(C)+K(E)
      • K(d);N_SPINB(a),N_SPINQ(e),P-FLIGHT::QAB1(G),XQ(e)
      • R(f);S_CUTB(h)::QAR1(G),XQ(e)
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