MESON Chess Problem Database

Problem Display
PID: 81425 (4q3/4NNp1/pn6/KnkB3R/2p1Q3/pr3b2/1B6/b7 w - - 0 1)

Savournin, Jacques

5th HM., British Chess Magazine, 1972

4q3/4NNp1/pn6/KnkB3R/2p1Q3/pr3b2/1B6/b7

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qe3#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sd6
      • 2.Qd4#
    • 1...Sa7
      • 2.Qd4#
    • 1...Sc7
      • 2.Qd4#
    • 1...Sa4
      • 2.Qxc4#
    • 1...Sxd5
      • 2.Rxd5#
    • 1...Sd7
      • 2.Qxc4#
    • 1...Sa8
      • 2.Qxc4#
    • 1...Sc8
      • 2.Qxc4#
  • Tries
    • 1.Qe3+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Rxe3!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qxb6#
      • 1...Sxd5
        • 2.Qb6#
      • 1...Sc3
        • 2.Qg1#
      • 1...Qc6
        • 2.Qxc6#
      • 1...Qb8
        • 2.Qc6#
      • 1...Qd8
        • 2.Qc6#
      • 1...Sd4
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...Sa4
        • 2.Bxf3#
      • 1...Sd7
        • 2.Qc6#
      • 1...Sa8
        • 2.Bxf3#
      • 1...Sc8
        • 2.Bxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 10
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,S_CUTR(c)::QAB(B)
    • S(f);N_GUARD::QAB1(B),XS(f)
    • S(f);N_GUARD::QAB1(B)
    • S(i);N_GUARD::QAR1(B),XP(e)
    • S(i);OGATE,P_SPINS(i),XB(D)::R1(E),XS(i)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB1(B),XS(f)
      • Refutation
        • R(c);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XS(i)
    • Vars
      • S(i);P_SPINS(i),XB(D)::QAB1(B)
      • S(f);N_GUARD,S_CUTR(c)::QAB(B)
      • Q(k);N_GUARD::QAR1(B),XQ(k)
      • Q(k);N_GUARD::QAR1(B)
      • S(f);N_GUARD::QAB1(B)
      • S(f);N_GUARD::QAB1(B),XS(f)
      • S(i);N_GUARD::R(E)+B(D),XB(d)
      • S(i);S_CUTQ(k)::QAR1(B)
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