MESON Chess Problem Database

Problem Display
PID: 54173 (1q6/8/1pN4B/1K2P3/3pp1R1/3Brk1P/4r2R/b2Q1b1n w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

Chess Life, 1956

1q6/8/1pN4B/1K2P3/3pp1R1/3Brk1P/4r2R/b2Q1b1n

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5+
      • 2.Sxe5#
    • 1...Sg3
      • 2.Rf4#
  • Tries
    • 1.Qxf1+?
      • 1...Sf2
        • 2.Qg2#
      • 1...Rf2!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Bxe4#
        • 2.Qf7#
      • 1...Qxe5+
        • 2.Sxe5#
      • 1...Rxh2
        • 2.Qf7#
      • 1...Rxd3
        • 2.Qf7#
      • 1...Bxh3
        • 2.Bxe2#
      • 1...exd3
        • 2.Qf7#
      • 1...Rg2
        • 2.Qf7#
      • 1...Bg2
        • 2.Qf7#
      • 1...Qd6
        • 2.Bxe4#
      • 1...Qa7
        • 2.Bxe4#
      • 1...Qc7
        • 2.Bxe4#
      • 1...Qb7
        • 2.Bxe4#
      • 1...Qc8
        • 2.Bxe4#
      • 1...Qd8
        • 2.Bxe4#
      • 1...Qe8
        • 2.Bxe4#
      • 1...Qf8
        • 2.Bxe4#
      • 1...Qg8
        • 2.Bxe4#
      • 1...Qh8
        • 2.Bxe4#
      • 1...Re1
        • 2.Qf7#
      • 1...Ra2
        • 2.Qf7#
      • 1...Rb2
        • 2.Sxd4#
      • 1...Rc2
        • 2.Qf7#
      • 1...Rd2
        • 2.Qf7#
      • 1...Rf2
        • 2.Qf7#
      • 1...Bc3
        • 2.Qf7#
      • 1...Sf2
        • 2.Qf7#
      • 1...Sg3
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 24
    • REMOVED MATES = 0
  • Sets
    • Q(j);CHECK,XP(G)::S(H),XQ(j)
    • S(c);SBLOCK::R1(E)
  • Tries
    • Try
      • Q(A);CHECK,N_PINR(d),XB(b)
      • Vars
        • S(c);P_SPINS(c),S_CUTR(d)::QAB1(A)
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • Q(A);N_PINR(d)
    • Threat
      • DUALS(2)
    • Vars
      • Q(j);CHECK,XP(G)::S(H),XQ(j)
      • R(d);P_PINB(C),XR(B)::QAR(A)
      • R(e);P_SPINR(e),XB(C)::QAR(A)
      • B(b);N_GUARD,XP(D)::B(C),XR(d)
      • P(h);XB(C)::QAR(A)
      • R(d);P_PINB(C)::QAR(A)
      • B(b);::QAR(A)
      • Q(j);::B(C),XP(h)
      • Q(j);P_PINS(H)::B(C),XP(h)
      • R(d);P_PINB(C),P_PINQ(A),S_CUTB(a)::S(H),XP(g)
      • B(a);::QAR(A)
      • S(c);::QAR(A)
      • S(c);SBLOCK::R1(E)
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