MESON Chess Problem Database

Problem Display
PID: 47715 (4n3/5k2/6NK/3P4/4P3/8/8/1Q6 w - - 0 1)

Mihalco, Oto

Thema Danicum, 1991

4n3/5k2/6NK/3P4/4P3/8/8/1Q6

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002
145 StrateGems 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qf1#
  • Tries
    • 1.Qf1+?
      • 1...Kg8
        • 2.Qf8#
      • 1...Sf6!
    • 1.Qb4?
      • threat
        • 2.Qf8#
      • 1...Kf6
        • 2.Qe7#
        • 2.Qf8#
      • 1...Kg8
        • 2.Qf8#
      • 1...Sd6!
    • 1.Qb7+?
      • 1...Kf6
        • 2.Qe7#
      • 1...Kg8
        • 2.Qh7#
      • 1...Sc7!
  • Keys
    • 1.Qb8!
      • 1...Kf6
        • 2.Qf4#
      • 1...Kg8
        • 2.Qxe8#
      • 1...Sf6
        • 2.Qf8#
      • 1...Sd6
        • 2.Qf8#
      • 1...Sc7
        • 2.Qf8#
      • 1...Sg7
        • 2.Qf8#

This anticipates 172331(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
      • K(a);P_SPINS(b),S_FLIGHT::QAR2(A),XS(b)
      • S(b);OGATE,SBLOCK::QAR1(A)
      • S(b);OGATE::QAR1(A)
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