MESON Chess Problem Database

Problem Display
PID: 57112 (4R1B1/q3N2Q/2p3p1/2r1N1p1/3Pk1Pn/2PR4/3BK3/8 w - - 0 1)

Savournin, Jacques

2nd Prize, Themes-64, 1965

4R1B1/q3N2Q/2p3p1/2r1N1p1/3Pk1Pn/2PR4/3BK3/8

#2

11 + 7

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qxg6#
    • 1...Sf3
      • 2.Qxg6#
    • 1...Sf5
      • 2.Qh1#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Sf6#
        • 2.Sd5#
      • 1...Qb8
        • 2.Sxc5#
        • 2.Sf6#
      • 1...Qc7
        • 2.Sxc5#
        • 2.Sf6#
      • 1...Qa8
        • 2.Sxc5#
        • 2.Sf6#
      • 1...Rd5
        • 2.Sf6#
        • 2.Sxd5#
      • 1...Re5
        • 2.Sf6#
      • 1...Rf5
        • 2.Sxf5#
      • 1...Sf3
        • 2.Sf6#
      • 1...Sf5
        • 2.Sf6#
        • 2.Qh1#
      • 1...Qxd7!
    • 1.S7xg6?
      • threat
        • 2.Re3#
      • 1...Rxc3
        • 2.Sd7#
      • 1...Sxg6
        • 2.Qxg6#
        • 2.Qh1#
      • 1...Qa6
        • 2.Sxh4#
      • 1...Sg2
        • 2.Se7#
      • 1...Sf5
        • 2.Qh1#
      • 1...Qf7!
    • 1.Qxg6+?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sxg6!
  • Keys
    • 1.S5xg6!
      • threat
        • 2.Re3#
      • 1...Rxc3
        • 2.Sxh4#
      • 1...Sxg6
        • 2.Qh1#
      • 1...Qa6
        • 2.Sd5#
      • 1...Sg2
        • 2.Se5#
      • 1...Sf5
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::QAB(I),XP(f)
    • S(b);N_SPINP(f),OGATE::QAB(I)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::S(G)
        • R(c);N_GUARD,N_SPINP(f)::R(J)+S(H),XR(c)
        • S(b);::S(G)
      • Refutation
        • Q(g);XS(G)
    • Try
      • S(H);XP(f)
      • Threat
        • R1(D)
      • Vars
        • R(c);N_GUARD,XP(C)::R(J)+S(G)
        • Q(g);N_GUARD,P_PINR(D)::QAB(I)+S(H),XS(b)
        • S(b);N_GUARD::QAB(I)+S(H)
        • S(b);OGATE::QAB(I)
      • Refutation
        • Q(g);
    • Try
      • Q(I);CHECK,XP(f)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(I),XS(b)
      • Refutation
        • S(b);XQ(I)
  • Actual
    • S(G);XP(f)
    • Threat
      • R1(D)
    • Vars
      • R(c);N_GUARD,XP(C)::QAB(I)+S(G),XS(b)
      • S(b);OGATE,P_SPINS(b),XS(G)::QAB(I)
      • Q(g);N_GUARD,P_PINR(D)::R(J)+S(H)
      • S(b);N_GUARD::QAB(I)+S(G)
      • S(b);OGATE::QAB(I)
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