MESON Chess Problem Database

Problem Display
PID: 7927 (8/2b5/2p5/6Q1/kBK5/8/4n3/8 w - - 0 1)

Lincoln, Robert A

The Problemist, 1994

8/2b5/2p5/6Q1/kBK5/8/4n3/8

#2

3 + 4

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qa5#
    • 1...Bg3
      • 2.Qa5#
    • 1...Bf4
      • 2.Qa5#
    • 1...Ba5
      • 2.Qxa5#
    • 1...Bd6
      • 2.Qa5#
    • 1...Bb8
      • 2.Qa5#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qa3#
        • 2.Qa1#
        • 2.Qd1#
        • 2.Qc2#
      • 1...Be5
        • 2.Qa3#
        • 2.Qd1#
        • 2.Qc2#
      • 1...Sc3
        • 2.Qa3#
        • 2.Qc2#
      • 1...Sd4
        • 2.Qa3#
        • 2.Qa1#
      • 1...Sxc1!
    • 1.Qd2?
      • threat
        • 2.Qd1#
        • 2.Qa2#
        • 2.Qc2#
      • 1...Sc3
        • 2.Qc2#
      • 1...Sd4
        • 2.Qa2#
      • 1...Sc1!
    • 1.Qe3?
      • threat
        • 2.Qa3#
        • 2.Qb3#
      • 1...Sc1
        • 2.Qa3#
      • 1...Sd4
        • 2.Qa3#
      • 1...Sc3!
    • 1.Qg6?
      • threat
        • 2.Qc2#
        • 2.Qxc6#
      • 1...Bd6
        • 2.Qc2#
      • 1...Sc1
        • 2.Qxc6#
      • 1...Sc3
        • 2.Qc2#
      • 1...c5
        • 2.Qc2#
        • 2.Qe8#
        • 2.Qc6#
      • 1...Sd4!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qxc6#
      • 1...Sc3
        • 2.Qc2#
      • 1...Sd4
        • 2.Qa2#
      • 1...c5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(d);N_GUARD,SBLOCK::QAR1(C)
    • B(d);N_GUARD::QAR1(C)
    • B(d);N_GUARD::QAR1(C),XB(d)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(4)
      • Refutation
        • S(a);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);::QAB(C)
        • S(a);::QAR2(C)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(C)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);::QAB(C)
        • S(a);::QAB(C),XP(c)
        • S(a);::QAB(C)
      • Refutation
        • S(a);
  • Actual
    • Q(C);
    • Threat
      • QAB(C),XP(c)
    • Vars
      • S(a);OGATE::QAB(C)
      • S(a);OGATE::QAR2(C)
      • P(c);::QAB(C)
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