MESON Chess Problem Database

Problem Display
PID: 48015 (6K1/8/3N2k1/4P3/7Q/4bP2/8/8 w - - 0 1)

Spiess, Jean-Yves

Europe Echecs, 1993

6K1/8/3N2k1/4P3/7Q/4bP2/8/8

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002
145 StrateGems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bg5
      • 2.Qh7#
  • Tries
    • 1.Se4?
      • threat
        • 2.Qh7#
      • 1...Kf5
        • 2.Qf6#
      • 1...Bh6!
    • 1.Sf7?
      • threat
        • 2.Qh7#
      • 1...Kf5
        • 2.Qf6#
        • 2.Qg4#
      • 1...Bh6!
    • 1.Sc8?
      • threat
        • 2.Se7#
      • 1...Kf5
        • 2.Qf6#
      • 1...Bg5
        • 2.Qh7#
      • 1...Bc5!
    • 1.Qg4+?
      • 1...Kh6
        • 2.Sf5#
        • 2.Sf7#
      • 1...Bg5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se7#
      • 1...Kxf5
        • 2.Qf6#
      • 1...Bc5
        • 2.Qg4#
      • 1...Bg5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAB1(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • B(a);
    • Try
      • S(D);
      • Threat
        • QAB1(B)
      • Refutation
        • B(a);
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
        • B(a);SBLOCK::QAB1(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);CHECK
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(b);S_FLIGHT,XS(D)::QAR1(B)
      • B(a);N_GUARD::QAR2(B)
      • B(a);SBLOCK::QAB1(B)
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