MESON Chess Problem Database

Problem Display
PID: 47432 (8/7p/7K/8/5pkp/3Q4/8/4N3 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/7p/7K/8/5pkp/3Q4/8/4N3

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Qxf3#
  • Tries
    • 1.Qe2+?
      • 1...Kg3
        • 2.Qg2#
      • 1...Kh3
        • 2.Qg2#
      • 1...f3
        • 2.Qxf3#
      • 1...Kf5!
    • 1.Qe4?
      • 1...Kg3
        • 2.Qg2#
      • 1...Kh3
        • 2.Qg2#
      • 1...h3!
    • 1.Qg6+?
      • 1...Kh3
        • 2.Qg2#
      • 1...hxg6!
  • Keys
    • 1.Qd5!
      • 1...Kg3
        • 2.Qg2#
      • 1...Kh3
        • 2.Qg2#
      • 1...f3
        • 2.Qxf3#
      • 1...h3
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);::QAB1(B),XP(a)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • K(b);S_FLIGHT::QAB1(B)
        • P(a);P_SPINP(a)::QAB1(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(B)
        • K(b);N_SPINP(a),S_FLIGHT::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • P(d);XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(b);P-FLIGHT::QAR1(B)
      • K(b);S_FLIGHT::QAB1(B)
      • P(a);::QAB1(B),XP(a)
      • P(c);SBLOCK::QAR1(B)
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