MESON Chess Problem Database

Problem Display
PID: 80131 (5Q2/1K1N2P1/3PP3/3k1NR1/5n1R/1Pnp3B/7b/B1q5 w - - 0 1)

Savournin, Jacques

Sp. Prize, Probleme TT, 1967

5Q2/1K1N2P1/3PP3/3k1NR1/5n1R/1Pnp3B/7b/B1q5

#2

12 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bg2#
    • 1...Kxe6
      • 2.Sd4#
    • 1...Sb1
      • 2.Sg3#
    • 1...Sd1
      • 2.Sg3#
    • 1...Sa2
      • 2.Sg3#
    • 1...Sce2
      • 2.Sg3#
    • 1...Sa4
      • 2.Sg3#
    • 1...Se4
      • 2.Se3#
    • 1...Sb5
      • 2.Sg3#
    • 1...Sfe2
      • 2.Se3#
    • 1...Sg2
      • 2.Se3#
    • 1...Sh5
      • 2.Se3#
    • 1...Sxe6
      • 2.Se3#
    • 1...Sg6
      • 2.Se3#
  • Tries
    • 1.Bg2+?
      • 1...Kxe6
        • 2.Qe7#
        • 2.Qe8#
      • 1...Se4
        • 2.Sd4#
      • 1...Sxg2!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qc4#
      • 1...Ke4
        • 2.Bg2#
      • 1...Kxe6
        • 2.g8Q#
        • 2.g8B#
      • 1...Sb1
        • 2.Sf6#
      • 1...Sd1
        • 2.Sf6#
      • 1...Sa2
        • 2.Sf6#
      • 1...Sce2
        • 2.Sf6#
      • 1...Sa4
        • 2.Sf6#
      • 1...Se4
        • 2.Sb6#
      • 1...Sb5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • K(f);P_SPINS(e),S_FLIGHT::B(C)
    • K(f);S_FLIGHT,XP(H)::B(C)+S(E),DCHECK
    • S(c);::R(F)+S(E)
    • S(c);SBLOCK::R(F)+S(E),DCHECK
    • S(e);::R(F)+S(E),DCHECK
    • S(e);XP(H)::R(F)+S(E),DCHECK
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • S(c);P_SPINS(c)::R(F)+S(E)
      • Refutation
        • S(e);XB(C)
  • Actual
    • Q(L);
    • Threat
      • QAB1(L)
    • Vars
      • K(f);P_SPINS(e),S_FLIGHT::B(C)
      • K(f);S_FLIGHT,XP(H)::P=Q
      • S(c);::S(J)
      • S(c);SBLOCK::S(J)
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Developed and maintained by Brian Stephenson.
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