MESON Chess Problem Database

Problem Display
PID: 135535 (6B1/8/8/1p3p2/8/5p2/7Q/3K1k2 w - - 0 1)

Lincoln, Robert A

StrateGems, 2009

6B1/8/8/1p3p2/8/5p2/7Q/3K1k2

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Qh1#
    • 1...b4
      • 2.Bc4#
  • Tries
    • 1.Kd2?
      • 1...f2
        • 2.Qh1#
      • 1...b4
        • 2.Bc4#
      • 1...f4!
    • 1.Ba2?
      • 1...f2
        • 2.Qh1#
      • 1...b4
        • 2.Bc4#
      • 1...f4!
    • 1.Bb3?
      • 1...f2
        • 2.Qh1#
      • 1...b4
        • 2.Bc4#
      • 1...f4!
    • 1.Bd5?
      • 1...f2
        • 2.Bg2#
        • 2.Qh1#
        • 2.Qg2#
      • 1...b4
        • 2.Bc4#
      • 1...f4!
    • 1.Bf7?
      • 1...f2
        • 2.Qh1#
      • 1...b4
        • 2.Bc4#
      • 1...f4!
    • 1.Bh7?
      • 1...f4
        • 2.Bd3#
      • 1...f2
        • 2.Qh1#
      • 1...b4!
  • Keys
    • 1.Be6!
      • 1...f4
        • 2.Bh3#
      • 1...f2
        • 2.Qh1#
      • 1...b4
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAR2(B)
    • P(c);N_GUARD::B(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(b);SBLOCK::QAR2(B)
        • P(c);N_GUARD::B(C)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • P(b);SBLOCK::QAR2(B)
        • P(c);N_GUARD::B(C)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • P(b);SBLOCK::QAR2(B)
        • P(c);N_GUARD::B(C)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • P(c);N_GUARD::B(C)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • P(b);SBLOCK::QAR2(B)
        • P(c);N_GUARD::B(C)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • P(d);OGATE::B(C)
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • P(c);
  • Actual
    • B(C);
    • Vars
      • P(d);OGATE::B(C)
      • P(b);SBLOCK::QAR2(B)
      • P(c);N_GUARD::B(C)
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