MESON Chess Problem Database

Problem Display
PID: 103938 (6Q1/8/1pK2P1P/1P2k3/1p1N3p/1P2nP1P/2p2N2/2B5 w - - 0 1)

Zannoni, F

La Sfinge d'Antenore, 1885-1887

6Q1/8/1pK2P1P/1P2k3/1p1N3p/1P2nP1P/2p2N2/2B5

#2

11 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Bb2#
    • 1...Kf4
      • 2.Sd3#
    • 1...Kxf6
      • 2.Qg7#
  • Tries
    • 1.Sd3+?
      • 1...Kxf6
        • 2.Qg7#
      • 1...Kxd4!
    • 1.Se4?
      • 1...Kf4
        • 2.Qg5#
        • 2.Qb8#
      • 1...Sd1
        • 2.Qd5#
      • 1...Sf1
        • 2.Qd5#
      • 1...Sg2
        • 2.Qd5#
      • 1...Sc4
        • 2.Qd5#
      • 1...Sg4
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sf5
        • 2.Qd5#
      • 1...Kxd4!
    • 1.Qe6+?
      • 1...Kxd4
        • 2.Bb2#
        • 2.Qxe3#
      • 1...Kf4!
    • 1.Qg3+?
      • 1...Kxd4
        • 2.Bb2#
      • 1...Kxf6
        • 2.Qg7#
      • 1...hxg3!
    • 1.Qg5+?
      • 1...Kxd4
        • 2.Bb2#
        • 2.Qxe3#
      • 1...Sf5!
    • 1.Qb8+?
      • 1...Kxd4
        • 2.Bb2#
      • 1...Kxf6!
    • 1.Qe8+?
      • 1...Kxd4
        • 2.Bb2#
        • 2.Qxe3#
      • 1...Kxf6
        • 2.Se4#
      • 1...Kf4!
    • 1.f4+?
      • 1...Kxd4
        • 2.Bb2#
      • 1...Kxf6
        • 2.Qe6#
        • 2.Qg7#
      • 1...Kxf4!
  • Keys
    • 1.Qg1!
      • 1...Kxd4
        • 2.Bb2#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kxf6
        • 2.Qg7#
      • 1...Sd1
        • 2.Sg4#
      • 1...Sf1
        • 2.Sg4#
      • 1...Sg2
        • 2.Sg4#
      • 1...Sc4
        • 2.Sg4#
      • 1...Sg4
        • 2.Sxg4#
      • 1...Sd5
        • 2.Sg4#
      • 1...Sf5
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(e);OGATEB,S_FLIGHT,XS(F)::B(A)
    • K(e);P_SPINS(b),S_FLIGHT::S(B)
    • K(e);OGATEB,S_FLIGHT,XP(I)::QAB1(K)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);S_FLIGHT,XP(I)::QAB1(K)
      • Refutation
        • K(e);S_FLIGHT,XS(F)
    • Try
      • S(B);
      • Vars
        • S(b);N_GUARD::QAR1(K)
        • S(b);N_GUARD::QAR1(K),XS(b)
      • Refutation
        • K(e);S_FLIGHT,XS(F)
    • Try
      • Q(K);CHECK
      • Refutation
        • K(e);P_SPINS(b),S_FLIGHT
    • Try
      • Q(K);CHECK
      • Vars
        • K(e);S_FLIGHT,XS(F)::B(A)
        • K(e);OGATEB,S_FLIGHT,XP(I)::QAB1(K)
      • Refutation
        • P(d);XQ(K)
    • Try
      • Q(K);CHECK
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(K);CHECK
      • Vars
        • K(e);S_FLIGHT,XS(F)::B(A)
      • Refutation
        • K(e);S_FLIGHT,XP(I)
    • Try
      • Q(K);CHECK
      • Vars
        • K(e);S_FLIGHT,XP(I)::S(B)
      • Refutation
        • K(e);P_SPINS(b),S_FLIGHT
    • Try
      • P(D);CHECK
      • Vars
        • K(e);S_FLIGHT,XS(F)::B(A)
      • Refutation
        • K(e);P_SPINS(b),S_FLIGHT,XP(D)
  • Actual
    • Q(K);
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(F)::B(A)
      • K(e);P_SPINS(b),S_FLIGHT::S(B)
      • K(e);OGATEB,S_FLIGHT,XP(I)::QAB1(K)
      • S(b);N_GUARD::S(B)
      • S(b);N_GUARD::S(B),XS(b)
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