MESON Chess Problem Database

Problem Display
PID: 182833 (1n2K3/6bB/3PP1rR/1QNpkN1R/1pP5/2npPp2/5P2/B7 w - - 0 1)

Cleber Duarte Carvalho, Gil

Comm., Belliboni-Faria Festival, 1989

1n2K3/6bB/3PP1rR/1QNpkN1R/1pP5/2npPp2/5P2/B7

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6+
      • 2.Rxe6#
  • Tries
    • 1.Sd7+?
      • 1...Ke4
        • 2.Sg3#
      • 1...Kxe6
        • 2.Bg8#
      • 1...Sxd7!
    • 1.Bxc3+?
      • 1...d4
        • 2.Bxd4#
      • 1...bxc3!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qxd5#
      • 1...Rxe6+
        • 2.Se7#
      • 1...Kxe4
        • 2.Sg3#
      • 1...Kxe6
        • 2.Sxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(g);CHECK,OGATE,XP(J)::R1(K),XR(g)
  • Tries
    • Try
      • S(F);CHECK,P_PINP(e)
      • Vars
        • K(f);N_SPINP(e),N_SPINS(a),P-FLIGHT::S(G)
        • K(f);N_SPINP(e),N_SPINS(a),P-FLIGHT,P_SPINR(g),XP(J)::B(L)
      • Refutation
        • S(i);XS(F)
    • Try
      • B(A);CHECK,XS(a)
      • Vars
        • P(e);P_SPINP(e)::B(A),XP(e)
      • Refutation
        • P(d);XB(A)
  • Actual
    • S(F);P_PINP(e)
    • Threat
      • QAR1(E),XP(e)
    • Vars
      • R(g);CHECK,N_GUARD,XP(J)::R(H)+S(G)
      • K(f);N_SPINP(e),N_SPINS(a),P-FLIGHT,XS(F)::S(G)
      • K(f);N_SPINP(e),N_SPINS(a),P-FLIGHT,P_SPINR(g),XP(J)::S(G),XB(h)
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Developed and maintained by Brian Stephenson.
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