MESON Chess Problem Database

Problem Display
PID: 268705 (n2R4/7B/2P2P2/3Pk1K1/2prN1pN/2pp2p1/8/Q7 w - - 0 1)

Garofalo, Antonio

Probleemblad, 1986

n2R4/7B/2P2P2/3Pk1K1/2prN1pN/2pp2p1/8/Q7

#2

9 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Qe1?
      • threat
        • 2.Sg6#
        • 2.Qxg3#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...g2
        • 2.Sg6#
        • 2.Qg3#
      • 1...Rxd5!
    • 1.Qg1?
      • threat
        • 2.Qxg3#
      • 1...Rxe4
        • 2.Sg6#
      • 1...Rxd5
        • 2.Re8#
      • 1...g2!
    • 1.Qa5?
      • threat
        • 2.Re8#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Rxe4!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qe7#
      • 1...Rxe4
        • 2.Sg6#
      • 1...Rxd5
        • 2.Re8#
      • 1...Sc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);OGATE,P_SPINR(e),XS(B)::QAR1(A),XR(e)
      • Refutation
        • R(e);XP(D)
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(c)
      • Vars
        • R(e);SBLOCK,XS(B)::S(C)
        • R(e);SBLOCK,XP(D)::R(I)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • R(I)
      • Vars
        • R(e);OGATE,P_SPINR(e),XP(D)::QAR1(A),XR(e)
        • S(h);N_GUARD::QAB(A),XS(h)
      • Refutation
        • R(e);XS(B)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • R(e);SBLOCK,XS(B)::S(C)
      • R(e);SBLOCK,XP(D)::R(I)
      • S(h);N_GUARD::QAB(A),XS(h)
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