MESON Chess Problem Database

Problem Display
PID: 184204 (3R4/3N4/2pnb3/1rpk1pbQ/2R5/1r1n2P1/B7/B2N1K2 w - - 0 1)

Scotti, Louis

Democratie Nouvelle, 1954

3R4/3N4/2pnb3/1rpk1pbQ/2R5/1r1n2P1/B7/B2N1K2

#2

9 + 10

78 Bulletin Ouvrier des Echecs 1955

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Rd4#
    • 1...Rb2
      • 2.Sc3#
    • 1...Ra3
      • 2.Rd4#
    • 1...Rc3
      • 2.Sxc3#
    • 1...R3b4
      • 2.Sc3#
      • 2.Rd4#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bh4
      • 2.Se3#
    • 1...Bf6
      • 2.Se3#
    • 1...Be7
      • 2.Se3#
    • 1...Bxd8
      • 2.Se3#
    • 1...Sxc4
      • 2.Sf6#
    • 1...Se4
      • 2.Sb6#
    • 1...Sb7
      • 2.Sb6#
    • 1...Sf7
      • 2.Sb6#
    • 1...Sc8
      • 2.Sb6#
    • 1...Se8
      • 2.Sb6#
  • Tries
    • 1.Sf6+?
      • 1...Bxf6
        • 2.Se3#
      • 1...Kxc4!
    • 1.Qf3+?
      • 1...Se4
        • 2.Sb6#
      • 1...Kxc4!
    • 1.Qh1+?
      • 1...Se4
        • 2.Sb6#
      • 1...Kxc4!
  • Keys
    • 1.Re4!
      • threat
        • 2.Sc3#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Sxe4
        • 2.Sb6#
      • 1...fxe4
        • 2.Se3#
      • 1...Sc4
        • 2.Sf6#
      • 1...Sb7
        • 2.Sf6#
      • 1...Sf7
        • 2.Sf6#
      • 1...Sc8
        • 2.Sf6#
      • 1...Se8
        • 2.Sf6#
      • 1...Bd2
        • 2.Sf6#
      • 1...Bf6
        • 2.Sxf6#
      • 1...c4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • R(a);P_PINS(B)::B(D)+R(F),DCHECK
    • R(a);N_GUARD::S(B)
    • R(a);::B(D)+R(F),DCHECK
    • R(a);N_GUARD::S(B),XR(a)
    • B(g);N_GUARD,P_SPINP(f)::S(B),XB(g)
    • B(g);N_GUARD,P_SPINP(f)::S(B)
    • B(g);N_GUARD,P_SPINP(f),XR(I)::S(B)
    • S(i);SBLOCK,XR(F)::R(I)+S(H),DCHECK
    • S(i);::R(I)+S(H),DCHECK
  • Tries
    • Try
      • S(H);CHECK,P_PINS(i)
      • Vars
        • B(g);P_SPINP(f),XS(H)::S(B)
      • Refutation
        • K(e);N_SPINS(i),P_SPINR(a),S_FLIGHT,XR(F)
    • Try
      • Q(G);CHECK
      • Vars
        • S(i);P_SPINS(i)::R(I)+S(H),DCHECK
      • Refutation
        • K(e);P_SPINR(a),S_FLIGHT,XR(F)
    • Try
      • Q(G);CHECK
      • Vars
        • S(i);P_SPINS(i)::R(I)+S(H),DCHECK
      • Refutation
        • K(e);P_SPINR(a),S_FLIGHT,XR(F)
  • Actual
    • R(F);P_PINR(a)
    • Threat
      • S(B)
    • Vars
      • K(e);N_SPINR(a),OGATEB,S_FLIGHT,XR(F)::QAB(G)
      • S(i);SBLOCK,XR(F)::R(I)+S(H),DCHECK
      • P(f);P_SPINB(g),SBLOCK,XR(F)::S(B)
      • S(i);N_SPINR(a)::R(I)+S(H),DCHECK
      • S(i);::R(I)+S(H),DCHECK
      • B(g);N_GUARD,P_SPINP(f)::S(H)
      • B(g);N_GUARD,P_SPINP(f)::S(H),XB(g)
      • P(d);N_GUARD,N_SPINR(a)::R1(F)
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