MESON Chess Problem Database

Problem Display
PID: 9951 (3N4/2P5/B2k4/3N4/6K1/8/8/5Q2 w - - 0 1)

van Dijk, Nils Gustav Gerard

American Chess Bulletin, 1961

3N4/2P5/B2k4/3N4/6K1/8/8/5Q2

#2

6 + 1

5862 An ABC of Chess Problems 1970
4640 Chess Wizardry: The New ABC of Chess Problems 1996

SOLUTION

  • SOUND
  • Tries
    • 1.Qc4?
      • 1...Kd7
        • 2.Qc6#
      • 1...Ke5!
  • Keys
    • 1.Sf7+!
      • 1...Kc5
        • 2.Qc4#
      • 1...Kxd5
        • 2.Qc4#
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kd7
        • 2.c8Q#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(F);CHECK
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);P-FLIGHT,XS(C)::QAB1(A)
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::P=Q
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