MESON Chess Problem Database

Problem Display
PID: 29778 (5K1k/5n2/7P/7n/8/7Q/2B5/8 w - - 0 1)

Mortensen, Jan Robert (aka 'Adamas')

Kieler Nachrichten, 1963

5K1k/5n2/7P/7n/8/7Q/2B5/8

#2

4 + 3

2838 Fun with Chess Miniatures 1996
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Sg7
      • 2.hxg7#
  • Tries
    • 1.Kxf7?
      • threat
        • 2.Qc8#
      • 1...Sg7
        • 2.hxg7#
      • 1...Sf6!
    • 1.Qf5?
      • threat
        • 2.Qh7#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sg5!
    • 1.Qc3+?
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sg7
        • 2.Qxg7#
        • 2.hxg7#
      • 1...Se5!
    • 1.Qxh5?
      • 1...Sxh6
        • 2.Qe5#
        • 2.Qxh6#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sd6
        • 2.Qe5#
      • 1...Sd8
        • 2.Qe5#
      • 1...Sg5!
  • Keys
    • 1.Qe6!
      • 1...Sxh6
        • 2.Qxh6#
      • 1...Sg3
        • 2.Qf6#
      • 1...Sf4
        • 2.Qf6#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sg7
        • 2.hxg7#
      • 1...Se5
        • 2.Qg8#
      • 1...Sg5
        • 2.Qg8#
      • 1...Sd6
        • 2.Qg8#
      • 1...Sd8
        • 2.Qg8#

This anticipates 8004(1995)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::QAR(B)+P(C)DCHECK,XS(a)
  • Tries
    • Try
      • K(D);P-FLIGHT,XS(b)
      • Threat
        • QAR(B)
      • Vars
        • S(a);OGATE::QAR(B)+P(C)DCHECK,XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • S(a);N_GUARD::QAB(B),XS(a)
      • Refutation
        • S(b);
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB(B),XS(a)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(B);XS(a)
      • Vars
        • S(b);N_GUARD::QAB(B),XS(b)
        • S(b);N_GUARD::QAB(B)
      • Refutation
        • S(b);
  • Actual
    • Q(B);
    • Vars
      • S(b);OGATE,XP(C)::QAR2(B),XS(b)
      • S(a);N_GUARD::QAB(B)
      • S(a);N_GUARD::QAB(B),XS(a)
      • S(a);OGATE::P(C),XS(a)
      • S(b);OGATE::QAR1(B)
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