MESON Chess Problem Database

Problem Display
PID: 15621 (8/4B2p/8/6Nk/4Q3/7n/8/5K2 w - - 0 1)

Lincoln, Robert A

Newark Star-Ledger, 1986

8/4B2p/8/6Nk/4Q3/7n/8/5K2

#2

4 + 3

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Qxh7#
  • Tries
    • 1.Sxh3?
      • 1...h6
        • 2.Qf5#
      • 1...Kh6!
    • 1.Qh4+?
      • 1...Kg6
        • 2.Qxh7#
      • 1...Kxh4!
  • Keys
    • 1.Qf5!
      • 1...Kh4
        • 2.Qxh3#
      • 1...Kh6
        • 2.Qxh7#
      • 1...Sxg5
        • 2.Qxg5#
      • 1...Sg1
        • 2.Sf7#
      • 1...Sf2
        • 2.Sf7#
      • 1...Sf4
        • 2.Sf7#
      • 1...h6
        • 2.Sxh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(B),XP(c)
  • Tries
    • Try
      • S(C);XS(a)
      • Vars
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(b);P-FLIGHT::QAR1(B),XS(a)
      • K(b);P-FLIGHT::QAR1(B),XP(c)
      • S(a);OGATE,P_SPINS(a),XS(C)::QAR1(B),XS(a)
      • S(a);N_GUARD::QAR(B)+S(C)
      • P(c);SBLOCK::QAR(B)+S(C),XS(a)
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