MESON Chess Problem Database

Problem Display
PID: 194668 (3rB3/Np1p3R/1p6/2k1p3/2P5/1K1Q4/7b/7b w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

The Observer, 1941

(First published on Sun Jan 19 1941)

3rB3/Np1p3R/1p6/2k1p3/2P5/1K1Q4/7b/7b

#2

6 + 8

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qxd5#
    • 1...e4
      • 2.Qd5#
    • 1...d6
      • 2.Qe3#
  • Tries
    • 1.Sc8?
      • threat
        • 2.Qd6#
      • 1...Kc6
        • 2.Qd6#
      • 1...Bd5
        • 2.Qxd5#
      • 1...e4
        • 2.Qd5#
      • 1...d5
        • 2.Rc7#
      • 1...d6
        • 2.Qe3#
      • 1...Rxc8!
    • 1.Rh6?
      • threat
        • 2.Qe3#
        • 2.Qd6#
      • 1...Bd5
        • 2.Qe3#
        • 2.Qxd5#
      • 1...Bg1
        • 2.Qd6#
      • 1...Bf4
        • 2.Qd6#
      • 1...e4
        • 2.Qe3#
        • 2.Qd5#
      • 1...d6
        • 2.Qe3#
      • 1...d5!
    • 1.Rxd7?
      • threat
        • 2.Qe3#
        • 2.Qd6#
      • 1...Bd5
        • 2.Qe3#
        • 2.Qxd5#
      • 1...Bg1
        • 2.Qd6#
      • 1...Bf4
        • 2.Qd6#
      • 1...e4
        • 2.Qe3#
        • 2.Qd4#
        • 2.Qd5#
      • 1...Rxd7!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qd6#
      • 1...Kc6
        • 2.Qd6#
      • 1...Bd5
        • 2.Qxd5#
      • 1...e4
        • 2.Qd5#
      • 1...d5
        • 2.Rc7#
      • 1...d6
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD,P_PINP(C)::QAR1(B),XB(a)
    • P(d);S_CUTB(a)::QAR1(B)
    • P(g);SBLOCK::QAB(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(B)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(g)::QAR1(B)
        • B(a);N_GUARD,P_PINP(C)::QAR1(B),XB(a)
        • P(d);S_CUTB(a)::QAR1(B)
        • P(g);OGATE::R(E)
        • P(g);::QAB(B)
      • Refutation
        • R(h);XS(D)
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB1(B)
        • P(g);::QAB(B)
      • Refutation
        • P(g);
    • Try
      • R(E);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB1(B)
      • Refutation
        • R(h);XR(E)
  • Actual
    • S(D);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(g)::QAR1(B)
      • B(a);N_GUARD,P_PINP(C)::QAR1(B),XB(a)
      • P(d);S_CUTB(a)::QAR1(B)
      • P(g);OGATE::R(E)
      • P(g);::QAB(B)
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