MESON Chess Problem Database

Problem Display
PID: 39765 (8/1N6/8/8/Pkp5/8/K1Q5/5n2 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

8/1N6/8/8/Pkp5/8/K1Q5/5n2

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qb3#
      • 2.Qe4#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qa3#
      • 1...Kxa4
        • 2.Qxc4#
      • 1...c3
        • 2.Qe4#
        • 2.Qb5#
        • 2.Qd4#
      • 1...cxd3!
    • 1.Qf5?
      • threat
        • 2.Qa5#
      • 1...Kxa4
        • 2.Qa5#
      • 1...c3
        • 2.Qe4#
        • 2.Qg4#
        • 2.Qf4#
        • 2.Qb5#
      • 1...Kc3!
    • 1.Qd2+?
      • 1...Kxa4
        • 2.Qa5#
      • 1...c3
        • 2.Qf4#
        • 2.Qd4#
      • 1...Sxd2!
    • 1.Qc3+?
      • 1...Kxa4
        • 2.Qa5#
        • 2.Qxc4#
      • 1...Kxc3!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qa3#
      • 1...Kxa4
        • 2.Qxc4#
      • 1...c3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR2(B),XP(c)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT,XP(C)::QAR1(B)
      • Refutation
        • S(a);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);P-FLIGHT,XP(C)::QAR2(B),XP(c)
      • P(c);OGATEB,SBLOCK::QAR(B)
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