MESON Chess Problem Database

Problem Display
PID: 174348 (1K5B/1N1Np3/3pPb2/pR1P3p/3k2bR/1q1P1pp1/BPPQn3/8 w - - 0 1)

Belliboni, Caetano

7th Comm., Boletim da UBP, 1986-1987

1K5B/1N1Np3/3pPb2/pR1P3p/3k2bR/1q1P1pp1/BPPQn3/8

#2

13 + 11

1077 Boletim da UBP 1989

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Rxd5#
    • 1...Qxd3
      • 2.Qxd3#
    • 1...Bg7
      • 2.Bxg7#
    • 1...Sc1
      • 2.Qf4#
    • 1...Sg1
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
  • Tries
    • 1.Rxg4+?
      • 1...Sf4
        • 2.Rxf4#
        • 2.Qxf4#
      • 1...hxg4!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Sf5#
      • 1...Qxb5+
        • 2.Sxb5#
      • 1...Qxd5
        • 2.Rxd5#
      • 1...Qxd3
        • 2.Qxd3#
      • 1...exd6
        • 2.Bxf6#
      • 1...Be5
        • 2.Bxe5#
      • 1...Sf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(b);OGATE,XP(H)::R1(G),XQ(b)
    • Q(b);OGATE,P_SPINQ(b),XP(E)::QAR1(D),XQ(b)
    • B(j);OGATEB::B(M),XB(j)
    • S(a);N_GUARD::QAR2(D)
    • S(a);N_GUARD,N_SPINB(f),P_SPINB(j)::QAR2(D),XS(a)
  • Tries
    • Try
      • R(F);CHECK,P_PINB(j),XB(f)
      • Refutation
        • P(h);XR(F)
  • Actual
    • S(J);P_SPINR(G),XP(i)
    • Threat
      • S(J)
    • Vars
      • Q(b);CHECK,XR(G)::S(J),XQ(b)
      • Q(b);N_PINR(G),XP(H)::R1(G),XQ(b)
      • Q(b);N_PINR(G),OGATE,P_SPINQ(b),XP(E)::QAR1(D),XQ(b)
      • P(k);N_GUARD,XS(J)::B(M),XB(j)
      • B(j);OGATE,P_PINS(J)::B(M),XB(j)
      • S(a);N_GUARD,N_SPINB(f),P_SPINB(j)::QAR2(D),XS(a)
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