MESON Chess Problem Database

Problem Display
PID: 96284 (8/8/6Q1/1R2Nr1p/4k2r/3p3N/6nb/B6K w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

The Chess Problem, 1944

8/8/6Q1/1R2Nr1p/4k2r/3p3N/6nb/B6K

#2

6 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rb4+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Ke3!
    • 1.Qxf5+?
      • 1...Ke3
        • 2.Qxd3#
      • 1...Kxf5!
    • 1.Qxg2+?
      • 1...Rf3
        • 2.Qxf3#
      • 1...Ke3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qxf5#
      • 1...Kf3
        • 2.Qxg2#
      • 1...Rf4
        • 2.Sg5#
      • 1...Bf4
        • 2.Qxg2#
      • 1...Be5
        • 2.Qc6#
      • 1...Se3
        • 2.Sd2#
      • 1...Sf4
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(d);N_SPINR(f),S_FLIGHT::QAB1(F)
      • Refutation
        • K(d);N_SPINR(f),P-FLIGHT
    • Try
      • Q(F);CHECK,XR(f)
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(F),XP(c)
      • Refutation
        • K(d);S_FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK,N_PINR(f),XS(a)
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::QAB1(F),XR(f)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAB1(F),XR(f)
    • Vars
      • K(d);N_SPINR(f),S_FLIGHT::QAB1(F),XS(a)
      • R(e);SBLOCK::S(C)
      • B(b);P_PINS(C)::QAB(F),XS(a)
      • B(b);P_PINS(C)::QAB(F)
      • S(a);SBLOCK::S(E)
      • S(a);SBLOCK::S(C)
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