MESON Chess Problem Database

Problem Display
PID: 48065 (8/1K6/8/1kp5/pN6/8/P7/1Q6 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/1K6/8/1kp5/pN6/8/P7/1Q6

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Sc6#
  • Tries
    • 1.Sc2+?
      • 1...Ka5
        • 2.Qb6#
      • 1...Kc4!
    • 1.Sd3+?
      • 1...Ka5
        • 2.Qb6#
      • 1...Kc4!
    • 1.Sd5+?
      • 1...Ka5
        • 2.Qb6#
      • 1...Kc4!
    • 1.Sa6+?
      • 1...Ka5
        • 2.Qb6#
      • 1...Kc4!
  • Keys
    • 1.a3!
      • 1...Kc4
        • 2.Qd3#
      • 1...Ka5
        • 2.Sc6#
      • 1...cxb4
        • 2.Qxb4#
      • 1...c4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(B);
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • K(b);P-FLIGHT::S(C)
      • P(c);OGATE,P_SPINP(c),XS(C)::QAR1(A),XP(c)
      • P(c);OGATEB,SBLOCK::QAR(A)
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