MESON Chess Problem Database

Problem Display
PID: 36847 (4R3/4Q3/3pn3/3rr3/Rn2k1P1/2bp1N1N/4PP2/1B3K2 w - - 0 1)

Biollay, Andre

Tribune de Geneve, 1973

4R3/4Q3/3pn3/3rr3/Rn2k1P1/2bp1N1N/4PP2/1B3K2

#2

10 + 8

3690 Kunstschach in der Schweiz 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Sd2#
    • 1...Sd4
      • 2.Sfg5#
    • 1...Sf4
      • 2.Shg5#
    • 1...Sc5
      • 2.Qh7#
    • 1...Sc7
      • 2.Qh7#
    • 1...Sd8
      • 2.Qh7#
  • Tries
    • 1.Qxe6?
      • threat
        • 2.Qf5#
        • 2.Qg6#
      • 1...Rd4
        • 2.Sfg5#
      • 1...Ra5
        • 2.Bxd3#
      • 1...Rb5
        • 2.Bxd3#
      • 1...Rc5
        • 2.Bxd3#
      • 1...Rxe6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Bxd3#
      • 1...Bd4
        • 2.Sd2#
      • 1...Sd4
        • 2.Sfg5#
      • 1...Sf4
        • 2.Shg5#
      • 1...Sc5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD,N_SPINS(c),SBLOCK::S(E)
    • S(h);N_GUARD,N_SPINS(c),P_SPINR(f),SBLOCK::S(E)
    • S(h);N_GUARD,P_SPINR(f),SBLOCK::S(F)
    • S(h);P_SPINR(f)::QAB(I)
  • Tries
    • Try
      • Q(I);P_PINR(f),XS(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(e);N_SPINS(c),SBLOCK::S(E)
        • R(e);N_GUARD::B(A),XP(b)
      • Refutation
        • R(f);XQ(I)
  • Actual
    • Q(I);P_PINR(e)
    • Threat
      • B(A),XP(b)
    • Vars
      • B(a);N_GUARD,N_SPINS(c),SBLOCK::S(E)
      • S(h);N_GUARD,N_SPINS(c),SBLOCK,S_CUTR(f)::S(E)
      • S(h);N_GUARD,SBLOCK,S_CUTR(f)::S(F)
      • S(h);S_CUTR(f)::QAB(I)
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