MESON Chess Problem Database

Problem Display
PID: 49235 (B7/rrR4K/3bp2p/1P1k1nQ1/3P3p/3NpP2/2b1N2q/B1R5 w - - 0 1)

Zajic, Helmut

2nd HM., Het Belgisch Schaakbord (L'Echiquier Belge), 1979-1980

B7/rrR4K/3bp2p/1P1k1nQ1/3P3p/3NpP2/2b1N2q/B1R5

#2

11 + 11

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa1
      • 2.Bxb7#
    • 1...Ra2
      • 2.Bxb7#
    • 1...Ra3
      • 2.Bxb7#
    • 1...Ra4
      • 2.Bxb7#
    • 1...Ra5
      • 2.Bxb7#
    • 1...e5
      • 2.Qg8#
  • Keys
    • 1.Qd8!
      • threat
        • 2.Sb4#
      • 1...Bxd3
        • 2.Rc5#
      • 1...Sxd4
        • 2.Sc3#
      • 1...e5
        • 2.Qg8#
      • 1...Ra4
        • 2.Bxb7#
      • 1...Sg3
        • 2.Sf4#
      • 1...Se7
        • 2.Rc5#
      • 1...Sg7
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(j);N_GUARD,XB(A)::B(K),XR(k)
    • R(j);N_GUARD::B(K),XR(k)
    • P(h);N_SPINS(f),OGATEB::QAB(H)
  • Actual
    • Q(H);N_PINS(f),P_PINB(g)
    • Threat
      • S(D)
    • Vars
      • B(a);OGATE,XS(D)::R1(B)
      • S(f);P_PINS(D),SBLOCK,XP(F)::S(C)
      • P(h);OGATEB::QAB(H)
      • R(j);N_GUARD::B(K),XR(k)
      • S(f);P_PINS(D),S_CUTQ(b)::S(C)
      • S(f);N_PINR(I),P_PINS(D)::R1(I)
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