MESON Chess Problem Database

Problem Display
PID: 109079 (5Q1K/4N3/4pn2/2P1k3/1r2P3/1P1R2P1/3B1nb1/4NR2 w - - 0 1)

Nouguier, Henri

Apprenti Sorcier, 1996

5Q1K/4N3/4pn2/2P1k3/1r2P3/1P1R2P1/3B1nb1/4NR2

#2

11 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe4
      • 2.Qb8#
    • 1...Bxe4
      • 2.Bf4#
    • 1...S2xe4
      • 2.Sc6#
      • 2.Sg6#
      • 2.Bf4#
    • 1...S6xe4
      • 2.Sc6#
      • 2.Sg6#
      • 2.Bf4#
      • 2.Qf4#
    • 1...Sg4
      • 2.Qf4#
    • 1...Sd7
      • 2.Qf4#
    • 1...Sh7
      • 2.Qf4#
    • 1...Se8
      • 2.Qf4#
    • 1...Sg8
      • 2.Qf4#
  • Tries
    • 1.Sf3+?
      • 1...Kxe4
        • 2.Re3#
      • 1...Bxf3!
    • 1.Qxf6+?
      • 1...Kxe4
        • 2.Re3#
        • 2.Qf4#
        • 2.Qxe6#
      • 1...Kxf6!
    • 1.Qb8+?
      • 1...Kxe4
        • 2.Qf4#
      • 1...Rxb8+!
  • Keys
    • 1.Re3!
      • threat
        • 2.Sc6#
      • 1...Kd4
        • 2.Sc6#
      • 1...Rxe4
        • 2.Bc3#
      • 1...Bxe4
        • 2.Sf3#
      • 1...S2xe4
        • 2.Qxf6#
      • 1...S6xe4
        • 2.Qg7#
      • 1...Rb6
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD,SBLOCK,XP(G)::QAB(J)
    • B(b);SBLOCK,XP(G)::B(C)
    • S(f);OGATE::QAB1(J)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(G)::R1(E)
      • Refutation
        • B(b);XS(A)
    • Try
      • Q(J);CHECK,XS(f)
      • Refutation
        • K(d);P_SPINS(a),S_FLIGHT,XQ(J)
    • Try
      • Q(J);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT,XP(G)::QAR1(J)
      • Refutation
        • R(c);CHECK,XQ(J)
  • Actual
    • R(E);
    • Threat
      • S(I)
    • Vars
      • K(d);S_FLIGHT::S(I)
      • R(c);N_GUARD,P_SPINR(c),XP(G)::B(C)
      • B(b);N_GUARD,P_SPINB(b),XP(G)::S(A)
      • S(a);P_SPINS(a),XP(G)::QAB1(J),XS(f)
      • S(f);OGATEB,P_SPINS(f),XP(G)::QAB(J)
      • R(c);N_GUARD::B(C)
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