MESON Chess Problem Database

Problem Display
PID: 66848 (1n1b4/2pq1PP1/2BkP2R/2nNN3/5B2/4Q3/2b5/2R3K1 w - - 0 1)

Groeneveld, Cornelis

Sp. Prize, Belliboni MT, 1994

1n1b4/2pq1PP1/2BkP2R/2nNN3/5B2/4Q3/2b5/2R3K1

#2

11 + 7

5416 FIDE Album (1992-1994) (Annexe) 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Qe8
      • 2.fxe8S#
    • 1...Bb1
      • 2.Qxc5#
    • 1...Bd1
      • 2.Qxc5#
    • 1...Bb3
      • 2.Qxc5#
    • 1...Bd3
      • 2.Qxc5#
    • 1...Ba4
      • 2.Qxc5#
    • 1...Be4
      • 2.Qxc5#
    • 1...Bf5
      • 2.Qxc5#
    • 1...Bh7
      • 2.Qxc5#
    • 1...Sxe6
      • 2.Qa3#
  • Tries
    • 1.e7+?
      • 1...Qe6
        • 2.e8S#
      • 1...Se6
        • 2.Qa3#
      • 1...Bg6!
  • Keys
    • 1.Se7!
      • threat
        • 2.S5g6#
      • 1...Kxe7
        • 2.f8Q#
      • 1...Qxe6
        • 2.Sc8#
      • 1...Qxe7
        • 2.Qd4#
      • 1...Bxe7
        • 2.Qd4#
      • 1...Sxe6
        • 2.Qa3#
      • 1...Sxc6
        • 2.S5xc6#
      • 1...Bg6
        • 2.S5xg6#
      • 1...Be4
        • 2.Qxc5#
      • 1...Sd3
        • 2.Sf5#
      • 1...Se4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 8
  • Sets
    • Q(e);OGATE::PXQ(e)=S
    • B(a);::QAB1(C),XS(b)
    • S(b);OGATEB,P_SPINS(b),XP(H)::QAB(C)
  • Tries
    • Try
      • P(H);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e),S_CUTB(a),S_CUTB(g),S_CUTS(b)::P=S
        • S(b);P_SPINS(b),S_CUTB(a),S_CUTQ(e)::QAB(C)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • S(E);
    • Threat
      • B(D)+S(F)
    • Vars
      • K(c);S_FLIGHT,XS(E)::P=Q
      • Q(e);N_GUARD,P_SPINQ(e),XP(H)::S(E)
      • Q(e);SBLOCK,XS(E)::QAR2(C)
      • B(g);SBLOCK,XS(E)::QAR2(C)
      • S(b);OGATEB,P_SPINS(b),XP(H)::QAB(C)
      • S(f);XB(G)::B(D)+S(F),XS(f)
      • B(a);::B(D)+S(F),XB(a)
      • B(a);::QAB1(C),XS(b)
      • S(b);S_CUTB(a)::S(E)
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