MESON Chess Problem Database

Problem Display
PID: 182829 (5R2/3Q1B2/4K1P1/1p6/2ppk1P1/R1n3P1/2qrpBb1/8 w - - 0 1)

Zarur, Almiro Elias

2nd HM., Belliboni-Faria Festival, 1989

5R2/3Q1B2/4K1P1/1p6/2ppk1P1/R1n3P1/2qrpBb1/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qxd4#
    • 1...Sb1
      • 2.Qc6#
      • 2.Qd5#
      • 2.Qb7#
    • 1...Sd1
      • 2.Qc6#
      • 2.Qd5#
      • 2.Qb7#
    • 1...Sa2
      • 2.Qc6#
      • 2.Qd5#
      • 2.Qb7#
    • 1...Sa4
      • 2.Qc6#
      • 2.Qd5#
      • 2.Qb7#
    • 1...Sd5
      • 2.Qxd5#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Qf5#
      • 1...Kf3
        • 2.Bd5#
      • 1...Kd3!
    • 1.Kf6?
      • threat
        • 2.Qf5#
      • 1...Sd5+
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...Kd3
        • 2.Qxd4#
      • 1...Kf3!
    • 1.Qc6+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kd3!
    • 1.Qxd4+?
      • 1...Kf3
        • 2.Qf4#
      • 1...Rxd4!
    • 1.Qd5+?
      • 1...Kd3
        • 2.Qxd4#
      • 1...Sxd5!
    • 1.Qb7+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kd3!
    • 1.g7?
      • threat
        • 2.Bg6#
      • 1...Kd3
        • 2.Qxd4#
      • 1...Kf3!
  • Keys
    • 1.Ke7!
      • threat
        • 2.Qf5#
      • 1...Sd5+
        • 2.Qxd5#
      • 1...Kd3
        • 2.Qxd4#
      • 1...Kf3
        • 2.Bd5#
      • 1...Ke5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(h);P_SPINP(g),P_SPINS(e),S_FLIGHT::QAR1(G),XP(g)
    • S(e);N_GUARD::QAB1(G),XS(e)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • QAB1(G)
      • Vars
        • K(h);P_SPINS(e),S_FLIGHT::R(I)+B(H),DCHECK
      • Refutation
        • K(h);P_SPINS(e),S_FLIGHT
    • Try
      • K(E);P-FLIGHT
      • Threat
        • QAB1(G)
      • Vars
        • K(h);P_SPINP(g),P_SPINS(e),S_FLIGHT::QAR1(G),XP(g)
      • Refutation
        • K(h);P_SPINS(e),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAB1(G),XS(e)
      • Refutation
        • K(h);P_SPINS(e),S_FLIGHT
    • Try
      • Q(G);CHECK,XP(g)
      • Vars
        • K(h);OGATE,P_SPINS(e),S_FLIGHT::QAR1(G)
      • Refutation
        • R(b);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(h);P_SPINP(g),P_SPINS(e),S_FLIGHT::QAR1(G),XP(g)
      • Refutation
        • S(e);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAB1(G),XS(e)
      • Refutation
        • K(h);P_SPINS(e),S_FLIGHT
    • Try
      • P(F);
      • Threat
        • B(H)
      • Vars
        • K(h);P_SPINP(g),P_SPINS(e),S_FLIGHT::QAR1(G),XP(g)
      • Refutation
        • K(h);P_SPINS(e),S_FLIGHT
  • Actual
    • K(E);P-FLIGHT
    • Threat
      • QAB1(G)
    • Vars
      • S(e);CHECK,N_GUARD::QAB1(G),XS(e)
      • K(h);P_SPINP(g),P_SPINS(e),S_FLIGHT::QAR1(G),XP(g)
      • K(h);P_SPINS(e),S_FLIGHT::R(I)+B(H),DCHECK
      • K(h);P-FLIGHT::QAR1(G)
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