MESON Chess Problem Database

Problem Display
PID: 63346 (B2NN2b/5Q2/3pP3/2rqk2P/2pp1RKn/5p2/7p/B7 w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

Chess, 1945

B2NN2b/5Q2/3pP3/2rqk2P/2pp1RKn/5p2/7p/B7

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Rxe4#
    • 1...Qxe6+
      • 2.Qxe6#
    • 1...Bf6
      • 2.Qxf6#
    • 1...Bg7
      • 2.Qxg7#
    • 1...Sg2
      • 2.Qf5#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sg6
      • 2.Qf5#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Sd7#
      • 1...Qxe6+
        • 2.Qxe6#
      • 1...Qxa8
        • 2.Bxd4#
      • 1...Bxf6
        • 2.Qxf6#
      • 1...Qc6
        • 2.Bxd4#
      • 1...Qb7
        • 2.Bxd4#
      • 1...Rc7!
    • 1.Rf5+?
      • 1...Sxf5
        • 2.Qxf5#
      • 1...Ke4!
    • 1.Qd7?
      • threat
        • 2.Sf7#
      • 1...Qxe6+
        • 2.Qxe6#
      • 1...Qxa8
        • 2.Qxd6#
      • 1...Qb7
        • 2.Qxd6#
      • 1...Qc6!
    • 1.Qe7?
      • threat
        • 2.Sf7#
      • 1...Qxe6+
        • 2.Qxe6#
      • 1...Qxa8
        • 2.Qxd6#
      • 1...Qb7
        • 2.Qxd6#
      • 1...Qc6!
  • Keys
    • 1.Rxd4!
      • threat
        • 2.Qf4#
      • 1...Qe4+
        • 2.Rxe4#
      • 1...Qxe6+
        • 2.Qxe6#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Sg2
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sg6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(g);N_GUARD,P_PINR(B)::R1(B),XQ(g)
    • Q(g);CHECK,OGATE,XP(E)::QAR1(F),XQ(g)
    • B(j);N_GUARD::QAB1(F),XB(j)
    • B(j);N_GUARD::QAB(F),XB(j)
    • S(e);N_GUARD::QAR1(F)
    • S(e);N_GUARD::QAR1(F),XS(e)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • Q(g);CHECK,OGATE,XP(E)::QAR1(F),XQ(g)
        • Q(g);N_GUARD,XB(G)::B(A),XP(d)
        • B(j);OGATE,XS(I)::QAB1(F),XB(j)
        • Q(g);N_GUARD::B(A),XP(d)
      • Refutation
        • R(f);
    • Try
      • R(B);CHECK
      • Vars
        • S(e);OGATE,XR(B)::QAR1(F),XS(e)
      • Refutation
        • K(h);N_SPINP(d),P-FLIGHT,P_SPINQ(g)
    • Try
      • Q(F);
      • Threat
        • S(H)
      • Vars
        • Q(g);CHECK,OGATE,XP(E)::QAR1(F),XQ(g)
        • Q(g);N_GUARD,XB(G)::QAB1(F),XP(i)
        • Q(g);N_GUARD::QAB1(F),XP(i)
      • Refutation
        • Q(g);
    • Try
      • Q(F);
      • Threat
        • S(H)
      • Vars
        • Q(g);CHECK,OGATE,P_SPINQ(g),XP(E)::QAR1(F),XQ(g)
        • Q(g);N_GUARD,XB(G)::QAB1(F),XP(i)
        • Q(g);N_GUARD::QAB1(F),XP(i)
      • Refutation
        • Q(g);
  • Actual
    • R(B);XP(d)
    • Threat
      • QAB1(F)
    • Vars
      • Q(g);CHECK::B(A)+R(B),DCHECK,XQ(g)
      • Q(g);CHECK,OGATE,XP(E)::QAR1(F),XQ(g)
      • B(j);N_GUARD::QAB1(F),XB(j)
      • S(e);N_GUARD::QAR1(F)
      • S(e);N_GUARD::QAR1(F),XS(e)
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