MESON Chess Problem Database

Problem Display
PID: 23093 (8/B7/2K5/4p3/4k3/6nB/8/3Q4 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/B7/2K5/4p3/4k3/6nB/8/3Q4

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qg4#
  • Tries
    • 1.Qe2+?
      • 1...Kf4
        • 2.Qg4#
        • 2.Qe3#
      • 1...Sxe2!
    • 1.Qa4+?
      • 1...Kf3
        • 2.Qg4#
      • 1...Kd3!
    • 1.Qf1?
      • threat
        • 2.Bg2#
      • 1...Se2
        • 2.Bf5#
        • 2.Qf5#
      • 1...Sxf1!
    • 1.Qd2?
      • threat
        • 2.Qe3#
      • 1...Kf3
        • 2.Qe3#
      • 1...Sf5
        • 2.Bg2#
      • 1...Sf1!
    • 1.Qd3+?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kxd3!
    • 1.Qd4+?
      • 1...Kf3
        • 2.Qe3#
        • 2.Qg4#
      • 1...exd4!
  • Keys
    • 1.Qd7!
      • 1...Kf3
        • 2.Qg4#
      • 1...Kf4
        • 2.Qg4#
      • 1...Sf1
        • 2.Qf5#
      • 1...Sh1
        • 2.Qf5#
      • 1...Se2
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sh5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • B(B)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
        • S(a);SBLOCK::B(B)
      • Refutation
        • S(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • P(c);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • K(b);P-FLIGHT::QAR1(A)
      • S(a);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
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