MESON Chess Problem Database

Problem Display
PID: 199465 (1nK1R3/b6Q/4N3/5rP1/4k2N/1p2p2b/1B6/3R4 w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

The Observer, 1945

(First published on Sun Jun 3 1945)

1nK1R3/b6Q/4N3/5rP1/4k2N/1p2p2b/1B6/3R4

#2

8 + 7

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qxf5#
    • 1...Bg2
      • 2.Qxf5#
  • Tries
    • 1.Rd4+?
      • 1...Ke5
        • 2.Sg6#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sc7#
        • 2.Sg7#
        • 2.Sd8#
        • 2.Sf8#
        • 2.Qc7#
      • 1...Bxd4!
    • 1.Qb7+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Sc6!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Sc5#
      • 1...Rxg5
        • 2.Qf4#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Rf1
        • 2.Qe5#
      • 1...Rf2
        • 2.Qe5#
      • 1...Rf3
        • 2.Qe5#
      • 1...Rf4
        • 2.Qxf4#
        • 2.Qe5#
      • 1...Ra5
        • 2.Qf4#
      • 1...Rb5
        • 2.Qf4#
      • 1...Rc5
        • 2.Rd4#
      • 1...Rd5
        • 2.Qf4#
      • 1...Re5
        • 2.Qxe5#
      • 1...Rf6
        • 2.Qe5#
      • 1...Rf7
        • 2.Qe5#
      • 1...Rf8
        • 2.Qe5#
      • 1...Bc5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 2
  • Sets
    • B(c);N_GUARD::QAB1(F),XR(e)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • B(f);XR(A)
    • Try
      • Q(F);CHECK,N_PINR(e)
      • Vars
        • R(e);N_GUARD,P_PINS(E),P_SPINR(e)::QAB1(F),XR(e)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • Q(F);N_PINR(e)
    • Threat
      • R(H)+S(E),DCHECK
    • Vars
      • R(e);N_GUARD,P_PINS(E),XP(D)::QAR1(F)
      • B(f);N_GUARD::R1(A),XB(f)
      • R(e);N_GUARD,P_PINS(E)::QAR1(F)
      • R(e);P_PINQ(F),P_PINS(E),S_CUTB(f)::R1(A)
      • R(e);N_GUARD,P_PINS(E)::QAR1(F),XR(e)
      • R(e);N_GUARD,P_PINR(H),P_PINS(E)::QAR1(F)
      • B(f);::R(H)+S(E),DCHECK,XB(f)
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