MESON Chess Problem Database

Problem Display
PID: 153271 (6b1/3R1pp1/6k1/4Q3/8/7K/8/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2012

6b1/3R1pp1/6k1/4Q3/8/7K/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kh7
      • 2.Qh5#
  • Tries
    • 1.Kg4?
      • 1...Kh6
        • 2.Qh5#
      • 1...Kh7
        • 2.Qh5#
      • 1...Bh7
        • 2.Qg5#
      • 1...f6
        • 2.Qh5#
      • 1...f5+!
    • 1.Rd5?
      • 1...Kh6
        • 2.Qh5#
      • 1...Kh7
        • 2.Qh5#
      • 1...f6
        • 2.Qh5#
      • 1...Bh7
        • 2.Qg5#
      • 1...f5!
    • 1.Rd6+?
      • 1...Kh7
        • 2.Qh5#
      • 1...f6!
    • 1.Qg5+?
      • 1...Kh7
        • 2.Qh5#
      • 1...Kxg5!
  • Keys
    • 1.Kh4!
      • 1...Kh6
        • 2.Qh5#
      • 1...Kh7
        • 2.Qh5#
      • 1...Bh7
        • 2.Qg5#
      • 1...f5
        • 2.Qxg7#
      • 1...f6
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(B)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAR2(B)
        • B(d);SBLOCK::QAR1(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • P(b);CHECK
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAR2(B)
        • P(b);SBLOCK::QAB1(B)
        • B(d);SBLOCK::QAR1(B)
      • Refutation
        • P(b);
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::QAR2(B)
      • B(d);SBLOCK::QAR1(B)
      • P(b);SBLOCK::QAR1(B),XP(c)
      • P(b);SBLOCK::QAB1(B)
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Developed and maintained by Brian Stephenson.
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