MESON Chess Problem Database

Problem Display
PID: 71976 (3Q4/3pP3/8/2nP1R2/2Nkp2r/3P2Bp/BP6/2N1R1bK w - - 0 1)

Kovacevic, Marjan

1st Place, 08. WCCT, 2006-2008

3Q4/3pP3/8/2nP1R2/2Nkp2r/3P2Bp/BP6/2N1R1bK

#2

12 + 7

273 Mat Plus 2008
102 Probleemblad 2008
145 StrateGems 2008
56 The Problemist 2008
14561 08. WCCT Award 2009
56 The Problemist 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Qh8#
    • 1...Rh8
      • 2.Qxh8#
  • Tries
    • 1.Sa5?
      • threat
        • 2.Be5#
      • 1...Sxd3
        • 2.Scb3#
      • 1...Sb3
        • 2.Saxb3#
      • 1...Sa4
        • 2.Sab3#
      • 1...Sa6
        • 2.Sab3#
      • 1...Se6
        • 2.Sab3#
      • 1...Sb7
        • 2.Sab3#
      • 1...Rf4
        • 2.Qh8#
      • 1...d6
        • 2.Sc6#
      • 1...Bh2!
    • 1.Rd1?
      • threat
        • 2.Se2#
      • 1...Sxd3
        • 2.Qb6#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sa4
        • 2.Sb3#
      • 1...Sa6
        • 2.Sb3#
      • 1...Se6
        • 2.Sb3#
      • 1...Sb7
        • 2.Sb3#
      • 1...exd3!
    • 1.Qb6?
      • threat
        • 2.Qf6#
      • 1...Rh6
        • 2.Rxe4#
      • 1...d6!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qc3#
      • 1...Sxd3
        • 2.Se2#
      • 1...Sb3
        • 2.Be5#
      • 1...Sa4
        • 2.Be5#
      • 1...Sa6
        • 2.Be5#
      • 1...Se6
        • 2.Be5#
      • 1...Sb7
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD::QAB(L)
    • R(e);N_GUARD::QAB(L),XR(e)
  • Tries
    • Try
      • S(H);
      • Threat
        • B(G)
      • Vars
        • S(f);N_GUARD,SBLOCK,XP(F)::S(A)
        • S(f);N_GUARD::S(H),XS(f)
        • S(f);N_GUARD::S(H)
        • R(e);N_GUARD::QAB(L)
        • P(g);N_GUARD::S(H)
      • Refutation
        • B(a);
    • Try
      • R(B);
      • Threat
        • S(A)
      • Vars
        • S(f);OGATEB,P_SPINS(f),XP(F)::QAB(L)
        • S(f);N_GUARD::S(A),XS(f)
        • S(f);N_GUARD::S(A)
      • Refutation
        • P(d);P_SPINP(d),XP(F)
    • Try
      • Q(L);P_PINS(f)
      • Threat
        • QAB(L)
      • Vars
        • R(e);N_GUARD::R1(B),XP(d)
      • Refutation
        • P(g);
  • Actual
    • Q(L);
    • Threat
      • QAB1(L)
    • Vars
      • S(f);SBLOCK,XP(F)::S(A)
      • S(f);::B(G)
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