MESON Chess Problem Database

Problem Display
PID: 7407 (7B/3P4/bRB5/4PkNK/1n3Ppp/8/2R4r/1Qb2N2 w - - 0 1)

Savournin, Jacques

1st Comm., StrateGems, 1999

7B/3P4/bRB5/4PkNK/1n3Ppp/8/2R4r/1Qb2N2

#2

11 + 7

145 StrateGems 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf4
      • 2.Be4#
  • Tries
    • 1.Bb5?
      • threat
        • 2.Rf6#
      • 1...Kxf4
        • 2.Rc4#
      • 1...Sd5
        • 2.Rf2#
      • 1...Sc6
        • 2.Rf2#
      • 1...Bxf4!
    • 1.Rf2+?
      • 1...Sc2
        • 2.Be4#
      • 1...Sd3
        • 2.Be4#
      • 1...Bd3!
    • 1.Qxb4?
      • threat
        • 2.Qf8#
        • 2.Qe4#
      • 1...Bd3
        • 2.Qf8#
      • 1...Re2
        • 2.Qf8#
      • 1...Ba3
        • 2.Se3#
        • 2.Qe4#
      • 1...Bc4!
    • 1.d8Q?
      • threat
        • 2.Qf6#
        • 2.Qf8#
      • 1...Kxf4
        • 2.Qf6#
        • 2.Qf8#
      • 1...Bc4
        • 2.Qf6#
      • 1...Sd5!
  • Keys
    • 1.Bg2!
      • threat
        • 2.Rf6#
      • 1...Kxf4
        • 2.Rf2#
      • 1...Bxf4
        • 2.Be4#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sc6
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK,XP(D)::B(I)
  • Tries
    • Try
      • B(I);
      • Threat
        • R1(H)
      • Vars
        • K(f);P-FLIGHT,XP(D)::R(C)
        • S(c);N_GUARD::QAB(A)+R(C)
      • Refutation
        • B(a);XP(D)
    • Try
      • R(C);CHECK
      • Vars
        • S(c);P_SPINS(c)::B(I)
      • Refutation
        • B(g);P_SPINB(g)
    • Try
      • Q(A);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(g);::QAR(A)
        • R(b);::QAR(A)
      • Refutation
        • B(g);
    • Try
      • P(J);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);::QAR1(J)
      • Refutation
        • S(c);
  • Actual
    • B(I);
    • Threat
      • R1(H)
    • Vars
      • K(f);P-FLIGHT,XP(D)::R(C)
      • B(a);SBLOCK,XP(D)::B(I)
      • S(c);N_GUARD::QAB(A)+R(C)
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