MESON Chess Problem Database

Problem Display
PID: 173903 (1B6/2r4p/2p1p3/Nr1PkN2/qp1p1p1Q/pPP2b2/8/1BK5 w - - 0 1)

Colonelli, Hercules

Comm., Boletim da UBP, 1984-1985

1B6/2r4p/2p1p3/Nr1PkN2/qp1p1p1Q/pPP2b2/8/1BK5

#2

9 + 12

1077 Boletim da UBP 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Sc4#
    • 1...Bxd5
      • 2.Bxc7#
      • 2.cxd4#
    • 1...cxd5
      • 2.Sc6#
      • 2.Bxc7#
    • 1...exd5
      • 2.Qe7#
  • Tries
    • 1.Qf6+?
      • 1...Kxd5
        • 2.Qxd4#
      • 1...Kxf6!
    • 1.Qh6?
      • threat
        • 2.Qxe6#
      • 1...Rxd5
        • 2.Sc4#
        • 2.Qg7#
      • 1...Bxd5
        • 2.Bxc7#
        • 2.Qg7#
        • 2.cxd4#
      • 1...cxd5
        • 2.Sc6#
        • 2.Bxc7#
        • 2.Qg7#
      • 1...exd5
        • 2.Sxc6#
        • 2.Bxc7#
        • 2.Qd6#
        • 2.cxd4#
      • 1...exf5
        • 2.Qe6#
      • 1...Kxd5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qd6#
      • 1...Rxd5
        • 2.Sc4#
        • 2.Qg7#
      • 1...Bxd5
        • 2.Bxc7#
        • 2.Qg7#
        • 2.cxd4#
      • 1...cxd5
        • 2.Sc6#
        • 2.Bxc7#
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(g);SBLOCK,XP(G)::S(F)
    • P(j);OGATEB,SBLOCK,XP(G)::QAR2(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(h);N_SPINR(k),OGATE,P-FLIGHT,XP(G)::QAR1(E),XP(e)
      • Refutation
        • K(h);N_SPINR(k),S_FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XP(j)
      • Vars
        • P(j);XS(H)::QAR1(E)
      • Refutation
        • K(h);N_SPINR(k),P-FLIGHT,XP(G)
  • Actual
    • Q(E);P_PINP(j)
    • Threat
      • QAR1(E),XP(j)
    • Vars
      • K(h);N_SPINP(j),N_SPINR(k),P-FLIGHT,XP(G)::QAR1(E)
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