MESON Chess Problem Database

Problem Display
PID: 156890 (8/6b1/1K1N4/3p1P2/1p1k2Pn/1P4BQ/3PP3/Nb6 w - - 0 1)

Abbott, Joseph William

London News, 1876

8/6b1/1K1N4/3p1P2/1p1k2Pn/1P4BQ/3PP3/Nb6

#2

10 + 6

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Sc2#
    • 1...Bc2
      • 2.Sxc2#
    • 1...Bd3
      • 2.e3#
    • 1...Be4
      • 2.Sb5#
    • 1...Be5
      • 2.Bf2#
  • Tries
    • 1.Be5+?
      • 1...Bxe5
        • 2.Qe3#
      • 1...Kxe5!
    • 1.Qg2?
      • threat
        • 2.Sb5#
        • 2.Qg1#
        • 2.Qf2#
      • 1...Sxf5
        • 2.Sb5#
      • 1...Bh6
        • 2.Sb5#
      • 1...Bd3
        • 2.Qg1#
        • 2.Qf2#
        • 2.e3#
      • 1...Sf3
        • 2.Qf2#
      • 1...Sxg2!
  • Keys
    • 1.Qxh4!
      • 1...Bxf5
        • 2.gxf5#
      • 1...Ba2
        • 2.Sc2#
        • 2.g5#
      • 1...Bc2
        • 2.Sxc2#
      • 1...Bd3
        • 2.e3#
      • 1...Be4
        • 2.Sb5#
      • 1...Be5
        • 2.Bf2#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bh6
        • 2.Qf6#
      • 1...Bf8
        • 2.Qf6#
      • 1...Bh8
        • 2.Qxh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(A)
    • B(a);N_GUARD::S(A),XB(a)
    • B(a);SBLOCK::P(C)
    • B(a);SBLOCK::S(J)
    • B(f);SBLOCK::B(E)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • B(f);XB(E)::QAB1(F)
      • Refutation
        • K(c);S_FLIGHT,XB(E)
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • S(d);XP(H)::S(J)
        • B(f);::S(J)
        • S(d);::QAB(F)
      • Refutation
        • S(d);XQ(F)
  • Actual
    • Q(F);XS(d)
    • Vars
      • B(a);OGATE,XP(H)::QAR(F)+P(G),XB(a)
      • B(a);N_GUARD::S(A),XB(a)
      • B(a);SBLOCK::P(C)
      • B(a);SBLOCK::S(J)
      • B(f);SBLOCK::B(E)
      • B(f);N_GUARD::QAB(F),XB(f)
      • B(f);N_GUARD::QAB(F)
      • B(f);OGATEB::QAB(F),XB(f)
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