MESON Chess Problem Database

Problem Display
PID: 905 (8/2K2p2/3Bk3/8/2n5/6N1/3Q4/8 w - - 0 1)

Lincoln, Robert A

The Problemist Supplement, 1992

8/2K2p2/3Bk3/8/2n5/6N1/3Q4/8

#2

4 + 3

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qh6#
    • 1...Sxd6
      • 2.Qxd6#
  • Tries
    • 1.Qe3+?
      • 1...Kd5
        • 2.Qe4#
      • 1...Kf6
        • 2.Qh6#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sxe3!
    • 1.Qg5?
      • threat
        • 2.Qf5#
      • 1...Se5
        • 2.Qxe5#
      • 1...f5
        • 2.Qxf5#
      • 1...f6
        • 2.Qg8#
      • 1...Se3
        • 2.Qe5#
      • 1...Sxd6!
    • 1.Qd4?
      • 1...Sxd6
        • 2.Qxd6#
      • 1...Se5
        • 2.Qxe5#
      • 1...f6
        • 2.Qxc4#
      • 1...Se3
        • 2.Qe5#
      • 1...Sb2
        • 2.Qe5#
      • 1...Sd2
        • 2.Qe5#
      • 1...Sa3
        • 2.Qe5#
      • 1...Sa5
        • 2.Qe5#
      • 1...Sb6
        • 2.Qe5#
      • 1...f5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qe4#
      • 1...Sxd6
        • 2.Qxd6#
      • 1...f5
        • 2.Qxf5#
      • 1...f6
        • 2.Qxc4#
      • 1...Se3
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
    • S(a);OGATE,XB(C)::QAR1(A),XS(a)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);P-FLIGHT::QAR2(A)
        • S(a);N_GUARD,P_SPINS(a)::QAR1(A),XS(a)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(a);N_GUARD::QAR1(A),XS(a)
        • P(c);::QAB1(A),XP(c)
        • P(c);OGATEB,SBLOCK::QAB(A)
        • S(a);N_GUARD::QAR1(A)
      • Refutation
        • S(a);XB(C)
    • Try
      • Q(A);
      • Vars
        • S(a);OGATE,XB(C)::QAR1(A),XS(a)
        • S(a);N_GUARD::QAR1(A),XS(a)
        • P(c);SBLOCK::QAB(A),XS(a)
        • S(a);N_GUARD::QAR1(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • S(a);OGATE,XB(C)::QAR1(A),XS(a)
      • P(c);::QAB1(A),XP(c)
      • P(c);SBLOCK::QAB(A),XS(a)
      • S(a);N_GUARD::QAR1(A)
      • S(a);N_GUARD::QAR1(A),XS(a)
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