MESON Chess Problem Database

Problem Display
PID: 107738 (8/8/2Q1Nn1r/bRppk1p1/5Rp1/1N3r2/K2P4/1BB5 w - - 0 1)

Bevilacqua, C

Boletim da UBP, 1996

8/8/2Q1Nn1r/bRppk1p1/5Rp1/1N3r2/K2P4/1BB5

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Rf5#
    • 1...Rc3
      • 2.Rf5#
    • 1...Re3
      • 2.Rf5#
    • 1...Rg3
      • 2.Rf5#
    • 1...Rfh3
      • 2.Rf5#
  • Tries
    • 1.Bb2+?
      • 1...Rc3
        • 2.Rf5#
      • 1...d4
        • 2.Bxd4#
      • 1...Bc3!
    • 1.Qc7+?
      • 1...Kxe6
        • 2.Sxc5#
        • 2.Bf5#
      • 1...Bxc7!
  • Keys
    • 1.Sexc5!
      • threat
        • 2.d4#
      • 1...Kxf4
        • 2.Qd6#
      • 1...Rxf4
        • 2.Qe6#
      • 1...Bxd2
        • 2.Qc7#
      • 1...Rf2
        • 2.Sd3#
      • 1...Rd3
        • 2.Sxd3#
      • 1...Re3
        • 2.Rf5#
      • 1...Rh2
        • 2.Qxf6#
      • 1...Bc3
        • 2.Qc7#
      • 1...d4
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD,XS(E)::R1(F)
    • R(a);N_GUARD::R1(F)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • R(a);P_SPINR(a)::R1(F)
        • P(e);P_SPINP(e),S_CUTP(d)::B(B),XP(e)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(H);CHECK
      • Refutation
        • B(c);XQ(H)
  • Actual
    • S(I);XP(d)
    • Threat
      • P(D)
    • Vars
      • K(f);S_FLIGHT,XR(F)::QAB(H)
      • R(a);SBLOCK,XR(F)::QAR1(H)
      • B(c);N_GUARD,XP(D)::QAB(H)
      • R(a);N_GUARD,P_PINP(D)::S(I)
      • R(a);N_GUARD::S(I),XR(a)
      • R(a);N_GUARD::R1(F)
      • R(i);N_GUARD,P_PINP(D)::QAB1(H),XS(h)
      • B(c);N_GUARD::QAB(H)
      • P(e);::R(G)+S(I),DCHECK
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