MESON Chess Problem Database

Problem Display
PID: 144550 (1B6/2R1pN2/5p2/3N3Q/1P1qk3/6P1/2PP1p2/1B3K2 w - - 0 1)

Bonner Feast, Frederick

British Chess Magazine, 1898

1B6/2R1pN2/5p2/3N3Q/1P1qk3/6P1/2PP1p2/1B3K2

#2

11 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.c3#
    • 1...Qb6
      • 2.c3#
    • 1...Qa7
      • 2.c3#
    • 1...Qc4+
      • 2.Rxc4#
    • 1...Qxd5
      • 2.Qg4#
    • 1...f5
      • 2.Qh1#
    • 1...e5
      • 2.Sxf6#
    • 1...e6
      • 2.Sd6#
  • Tries
    • 1.Sxf6+?
      • 1...Qxf6
        • 2.c3#
      • 1...exf6!
    • 1.Rc4?
      • threat
        • 2.Sc3#
        • 2.c3#
        • 2.d3#
      • 1...f5
        • 2.Sc3#
        • 2.Qh1#
      • 1...e5
        • 2.Sc3#
        • 2.Sxf6#
      • 1...Qxc4+!
  • Keys
    • 1.Ba7!
      • 1...Qd3+
        • 2.cxd3#
      • 1...Qc4+
        • 2.Rxc4#
      • 1...Qxa7
        • 2.c3#
      • 1...Qxd2
        • 2.Rxe7#
      • 1...Qxb4
        • 2.d3#
      • 1...Qxd5
        • 2.Qg4#
      • 1...Qc5
        • 2.c3#
      • 1...Qe5
        • 2.c4#
      • 1...Qb6
        • 2.c3#
      • 1...f5
        • 2.Qh1#
      • 1...e5
        • 2.Sxf6#
      • 1...Qa1
        • 2.d3#
      • 1...Qb2
        • 2.d3#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Qe3
        • 2.Rxe7#
      • 1...e6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_GUARD::B(A)+P(C)
    • Q(b);CHECK,OGATEB::R(I),XQ(b)
    • Q(b);SBLOCK,XS(G)::QAR2(H)
    • P(d);SBLOCK::QAB(H)
    • P(e);N_GUARD,S_CUTQ(b)::S(G),XP(d)
    • P(e);N_GUARD::S(J)
  • Tries
    • Try
      • S(G);CHECK,XP(d)
      • Vars
        • Q(b);XS(G)::B(A)+P(C)
      • Refutation
        • P(e);XS(G)
    • Try
      • R(I);P_PINQ(b)
      • Threat
        • DUALS(3)
      • Refutation
        • Q(b);CHECK,N_SPINQ(b),XR(I)
  • Actual
    • B(K);
    • Vars
      • Q(b);CHECK,OGATE::P(C),XQ(b)
      • Q(b);CHECK,OGATEB::R(I),XQ(b)
      • Q(b);N_GUARD,XB(K)::B(A)+P(C)
      • Q(b);N_GUARD,XP(D)::R(I),XP(e)
      • Q(b);N_GUARD,XP(F)::P(D)
      • Q(b);SBLOCK,XS(G)::QAR2(H)
      • Q(b);N_GUARD::B(A)+P(C)
      • P(d);SBLOCK::QAB(H)
      • P(e);N_GUARD,S_CUTQ(b)::S(G),XP(d)
      • Q(b);N_GUARD,P_PINB(A)::P(D)
      • Q(b);N_GUARD::P(D)
      • Q(b);N_GUARD::S(G),XQ(b)
      • Q(b);N_GUARD::R(I),XP(e)
      • P(e);N_GUARD::S(J)
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