MESON Chess Problem Database

Problem Display
PID: 23136 (8/4KQBk/8/3N3n/4b3/8/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/4KQBk/8/3N3n/4b3/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Sf6#
    • 1...Sf4
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
  • Tries
    • 1.Ba1+?
      • 1...Sg7
        • 2.Qxg7#
      • 1...Kh6!
    • 1.Bb2+?
      • 1...Sg7
        • 2.Qxg7#
      • 1...Kh6!
    • 1.Bc3+?
      • 1...Sg7
        • 2.Qxg7#
      • 1...Kh6!
    • 1.Bd4+?
      • 1...Sg7
        • 2.Qxg7#
      • 1...Kh6!
    • 1.Be5+?
      • 1...Sg7
        • 2.Qxg7#
      • 1...Kh6!
    • 1.Bf6+?
      • 1...Sg7
        • 2.Qxg7#
      • 1...Kh6!
    • 1.Bf8+?
      • 1...Sg7
        • 2.Qxg7#
      • 1...Kh8!
    • 1.Qxh5+?
      • 1...Kg8
        • 2.Qh8#
      • 1...Kxg7!
  • Keys
    • 1.Kf8!
      • threat
        • 2.Qxh5#
      • 1...Sxg7
        • 2.Qxg7#
      • 1...Bf3
        • 2.Qf5#
      • 1...Bg6
        • 2.Qg8#
      • 1...Sg3
        • 2.Sf6#
      • 1...Sf4
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::S(A)
    • S(b);N_GUARD::S(A),XS(b)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);CHECK,XS(b)
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(c);P-FLIGHT,XB(D)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAR2(C),XS(b)
    • Vars
      • S(b);OGATE,P_SPINS(b),XB(D)::QAR1(C),XS(b)
      • B(a);N_GUARD::QAB(C)
      • B(a);SBLOCK::QAB1(C)
      • S(b);N_GUARD::S(A)
      • S(b);N_GUARD::S(A),XS(b)
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