MESON Chess Problem Database

Problem Display
PID: 265399 (8/6pK/Q3Pp2/P4k2/R3N2P/5B2/2p1n1pB/2rqR1r1 w - - 0 1)

Savournin, Jacques

Die Schwalbe, 1972

8/6pK/Q3Pp2/P4k2/R3N2P/5B2/2p1n1pB/2rqR1r1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Sg3#
    • 1...Sg3
      • 2.Sxg3#
    • 1...Sd4
      • 2.Sd6#
    • 1...Sf4
      • 2.Sg3#
  • Tries
    • 1.Sd6+?
      • 1...Qxd6
        • 2.Bg4#
      • 1...Kxe6!
    • 1.Qb5+?
      • 1...Qd5
        • 2.Qxd5#
      • 1...Kxe6!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Bg4#
      • 1...Sc3
        • 2.Rf4#
      • 1...Sg3
        • 2.Qb5#
      • 1...Sd4
        • 2.Qd3#
      • 1...Sf4
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::S(E)
    • S(e);N_GUARD::S(E),XS(e)
    • S(e);S_CUTQ(b)::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • Q(b);XS(E)::B(C)
      • Refutation
        • K(g);P_SPINS(e),S_FLIGHT,XP(I)
    • Try
      • Q(H);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAR2(H),XQ(b)
      • Refutation
        • K(g);S_FLIGHT,XP(I)
  • Actual
    • S(E);
    • Threat
      • B(C)
    • Vars
      • S(e);N_GUARD::R1(D)
      • S(e);::QAR(H)
      • S(e);::QAB(H)
      • S(e);N_GUARD::R1(D),XS(e)
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