MESON Chess Problem Database

Problem Display
PID: 160637 (8/8/8/8/K7/b1Q5/k1p2B2/5r2 w - - 0 1)

Lincoln, Robert A

British Chess Magazine, 2015

8/8/8/8/K7/b1Q5/k1p2B2/5r2

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qb3#
    • 1...Rb1
      • 2.Qxa3#
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qb3#
      • 1...Kb1
        • 2.Qa1#
      • 1...Bb2
        • 2.Qxb2#
      • 1...c1S
        • 2.Qa1#
      • 1...Rb1
        • 2.Qxa3#
      • 1...Rf3
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK::QAB1(B)
    • R(a);SBLOCK::QAR1(B),XB(d)
  • Actual
    • B(A);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);S_FLIGHT::QAR1(B)
      • B(d);N_GUARD::QAR1(B),XB(d)
      • P(c);S_CUTR(a)::QAR1(B)
      • R(a);SBLOCK::QAR1(B),XB(d)
      • R(a);N_GUARD::QAR1(B)
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