MESON Chess Problem Database

Problem Display
PID: 72180 (4r3/2pP1pn1/1NK1bk2/b1Q5/p6P/1prB4/1BpNR3/q5n1 w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

Chess, 1952

4r3/2pP1pn1/1NK1bk2/b1Q5/p6P/1prB4/1BpNR3/q5n1

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Sd5#
    • 1...Bc4
      • 2.Qg5#
    • 1...Bg4
      • 2.Sd5#
    • 1...Bd5+
      • 2.Sxd5#
    • 1...Bxd7+
      • 2.Sxd7#
    • 1...Sh5
      • 2.dxe8S#
  • Tries
    • 1.Bxc3+?
      • 1...Bxc3
        • 2.Qg5#
      • 1...Qxc3!
    • 1.d8Q+?
      • 1...Re7
        • 2.Qxe7#
        • 2.Qd4#
      • 1...Rxd8!
    • 1.d8B+?
      • 1...Re7
        • 2.Bxe7#
      • 1...Rxd8!
  • Keys
    • 1.Bh7!
      • threat
        • 2.Se4#
      • 1...Bd5+
        • 2.Sxd5#
      • 1...Bxd7+
        • 2.Sxd7#
      • 1...Sf5
        • 2.dxe8S#
      • 1...Sh5
        • 2.dxe8S#
      • 1...Bh3
        • 2.Sd5#
      • 1...Bc4
        • 2.Qg5#
      • 1...Bg4
        • 2.Sd5#
      • 1...Bf5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD::S(G)
    • B(h);N_PINQ(F)::QAB1(F)
    • B(h);CHECK,N_GUARD::S(G),XB(h)
    • B(h);CHECK,XP(I)::S(G),XB(h)
    • S(l);N_GUARD::PXR(m)=S
  • Tries
    • Try
      • B(A);CHECK,N_SPINQ(F),XR(e)
      • Vars
        • B(g);XB(A)::QAB1(F)
      • Refutation
        • Q(a);P_PINQ(F),XB(A)
    • Try
      • P(I);CHECK
      • Refutation
        • R(m);XQ(I)
    • Try
      • P(I);CHECK
      • Vars
        • R(m);N_GUARD::B(I),XR(m)
      • Refutation
        • R(m);XB(I)
  • Actual
    • B(D);
    • Threat
      • S(B)
    • Vars
      • B(h);CHECK,N_GUARD::S(G),XB(h)
      • B(h);CHECK,XP(I)::S(G),XB(h)
      • S(l);N_GUARD::PXR(m)=S
      • B(h);N_GUARD::S(G)
      • B(h);N_PINQ(F)::QAB1(F)
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