MESON Chess Problem Database

Problem Display
PID: 88771 (8/8/8/N4N2/6B1/1p1k1P2/1K1p2p1/3Q3n w - - 0 1)

Lincoln, Robert A

The Problemist, 1991

8/8/8/N4N2/6B1/1p1k1P2/1K1p2p1/3Q3n

#2

6 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...g1B
      • 2.Qf1#
  • Keys
    • 1.f4!
      • threat
        • 2.Qe2#
        • 2.Qf3#
        • 2.Qb1#
      • 1...Ke4
        • 2.Qf3#
      • 1...g1Q
        • 2.Qe2#
      • 1...g1S
        • 2.Qb1#
      • 1...g1B
        • 2.Qe2#
        • 2.Qb1#
      • 1...g1R
        • 2.Qe2#
        • 2.Qf3#
      • 1...Sg3
        • 2.Qf3#
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::QAB(A)
  • Actual
    • P(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(e);N_SPINP(b),S_FLIGHT::QAB1(A)
      • P(c);::QAB1(A)
      • P(c);::QAB(A)
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