MESON Chess Problem Database

Problem Display
PID: 202748 (2K5/1P1Qpp2/8/2N2B2/R1b1rkNB/5p1P/2rnp2P/7n w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

The Observer, 1950

(First published on Sun Aug 6 1950)

2K5/1P1Qpp2/8/2N2B2/R1b1rkNB/5p1P/2rnp2P/7n

#2

10 + 10

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sd3#
    • 1...Sg3
      • 2.hxg3#
  • Tries
    • 1.Bxe4?
      • threat
        • 2.Qf5#
      • 1...Be6
        • 2.b8Q#
        • 2.b8B#
      • 1...Sg3
        • 2.hxg3#
      • 1...e6
        • 2.Qxf7#
      • 1...f5
        • 2.Qxf5#
      • 1...Sxe4!
    • 1.Bg6?
      • threat
        • 2.Qf5#
      • 1...Re5
        • 2.Sd3#
      • 1...Re6
        • 2.Sd3#
      • 1...Be6
        • 2.b8Q#
        • 2.b8B#
      • 1...Sg3
        • 2.hxg3#
      • 1...e6
        • 2.Qxf7#
      • 1...f5
        • 2.Qxf5#
      • 1...fxg6!
    • 1.b8Q+?
      • 1...Re5
        • 2.Sd3#
        • 2.Qxe5#
      • 1...e5!
    • 1.b8B+?
      • 1...Re5
        • 2.Sd3#
        • 2.Bxe5#
      • 1...e5!
  • Keys
    • 1.Bh7!
      • threat
        • 2.Qf5#
      • 1...Re5
        • 2.Sd3#
      • 1...Re6
        • 2.Sd3#
      • 1...Be6
        • 2.b8Q#
        • 2.b8B#
      • 1...Sg3
        • 2.hxg3#
      • 1...e6
        • 2.Qxf7#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(g);P_SPINB(f)::S(F)
    • S(a);OGATE::P(A),XS(a)
  • Tries
    • Try
      • B(G);XR(g)
      • Threat
        • QAR1(I)
      • Vars
        • B(f);P_PINQ(I),P_PINS(F),S_CUTP(i)::P=Q
        • S(a);OGATE::P(A),XS(a)
        • P(i);OGATE::QAR(I),XP(j)
        • P(j);::QAR1(I),XP(j)
      • Refutation
        • S(c);XB(G)
    • Try
      • B(G);
      • Threat
        • QAR1(I)
      • Vars
        • R(g);P_SPINB(f)::S(F)
        • B(f);P_PINQ(I),P_PINS(F),P_SPINR(g),S_CUTP(i)::P=Q
        • S(a);OGATE::P(A),XS(a)
        • P(i);OGATE::QAR(I),XP(j)
        • P(j);::QAR1(I),XP(j)
      • Refutation
        • P(j);XB(G)
    • Try
      • P(H);CHECK
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • P(H);CHECK
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • B(G);
    • Threat
      • QAR1(I)
    • Vars
      • R(g);P_SPINB(f)::S(F)
      • B(f);P_PINQ(I),P_PINS(F),P_SPINR(g),S_CUTP(i)::P=Q
      • S(a);OGATE::P(A),XS(a)
      • P(i);OGATE::QAR(I),XP(j)
      • P(j);::QAR1(I),XP(j)
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