MESON Chess Problem Database

Problem Display
PID: 86737 (5K1n/n1B1PpN1/3p2p1/1bp1kN1r/2pp2pP/2Q1p3/4RP2/3R3B w - - 0 1)

Navon, Emanuel

1st HM., Belliboni-Faria Festival, 1989

5K1n/n1B1PpN1/3p2p1/1bp1kN1r/2pp2pP/2Q1p3/4RP2/3R3B

#2

11 + 13

1077 Boletim da UBP 1990
1077 Boletim da UBP 1991
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Bxd6#
    • 1...f6
      • 2.Bxd6#
  • Tries
    • 1.Sxd4?
      • threat
        • 2.Sde6#
      • 1...Kf4
        • 2.Qxe3#
      • 1...Kf6
        • 2.Sdf5#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Sc6!
    • 1.Sxd6?
      • threat
        • 2.Sde8#
      • 1...Kf4
        • 2.Sdf5#
      • 1...Kf6
        • 2.Se4#
      • 1...Be8
        • 2.Sdxe8#
      • 1...Sc8!
    • 1.Rxd4?
      • threat
        • 2.Rxc4#
        • 2.Rxg4#
      • 1...Kf6
        • 2.Rd1#
        • 2.Rdd2#
        • 2.Rd3#
        • 2.Rxc4#
        • 2.Re4#
        • 2.Rf4#
        • 2.Rxg4#
        • 2.Rd5#
        • 2.Rxd6#
      • 1...cxd4
        • 2.Qxd4#
      • 1...g3
        • 2.Rxc4#
        • 2.Rg4#
      • 1...Sc6!
    • 1.Rxe3+?
      • 1...Kf4
        • 2.Bxd6#
        • 2.Re4#
      • 1...Kf6!
    • 1.e8Q+?
      • 1...Kf4
        • 2.Bxd6#
        • 2.Qe4#
      • 1...Kf6
        • 2.Bd8#
        • 2.Qe7#
      • 1...Bxe8!
    • 1.e8R+?
      • 1...Kf4
        • 2.Bxd6#
        • 2.Re4#
      • 1...Kf6
        • 2.Bd8#
      • 1...Bxe8!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Sd5#
      • 1...Kf4
        • 2.Sg2#
      • 1...Kf6
        • 2.Sxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(g);N_SPINP(a),P_SPINP(i),S_FLIGHT::B(H),XP(i)
    • P(l);SBLOCK::B(H),XP(i)
  • Tries
    • Try
      • S(G);XP(c)
      • Threat
        • QAB(E)+S(G)
      • Vars
        • K(g);N_SPINP(a),P_SPINP(i),S_FLIGHT::QAB1(E),XP(a)
        • K(g);N_SPINP(a),S_FLIGHT::QAB(E)+S(G)
        • P(f);OGATE,XS(G)::QAB1(E),XP(f)
      • Refutation
        • S(k);
    • Try
      • S(G);XP(i)
      • Threat
        • B(H)+S(G)
      • Vars
        • K(g);N_SPINP(a),S_FLIGHT::B(H)+S(G)
        • K(g);N_SPINP(a),P_SPINP(c),S_FLIGHT::S(G)
        • B(e);::B(H)+S(G),XB(e)
      • Refutation
        • S(k);
    • Try
      • R(A);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);OGATE,XR(A)::QAB1(E),XP(f)
      • Refutation
        • S(k);
    • Try
      • R(C);CHECK,P_PINP(c),XP(a)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • P(I);CHECK
      • Refutation
        • B(e);XQ(I)
    • Try
      • P(I);CHECK
      • Vars
        • K(g);N_SPINP(a),P_SPINP(c),S_FLIGHT::B(H)
      • Refutation
        • B(e);XR(I)
  • Actual
    • S(G);P_PINP(c),XP(a)
    • Threat
      • R(C)+S(G)
    • Vars
      • K(g);N_SPINP(c),P_SPINP(i),S_FLIGHT::S(G)
      • K(g);S_FLIGHT::S(G),XP(d)
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