MESON Chess Problem Database

Problem Display
PID: 48688 (2nB3q/5p1p/r1B2b1R/2Np1kp1/r1Q3N1/p6K/2b5/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

2nd HM., Het Belgisch Schaakbord (L'Echiquier Belge), 1977-1978

2nB3q/5p1p/r1B2b1R/2Np1kp1/r1Q3N1/p6K/2b5/8

#2

7 + 12

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Qe8
      • 2.Rxf6#
    • 1...Qf8
      • 2.Rxf6#
    • 1...Qg8
      • 2.Rxf6#
    • 1...R4a5
      • 2.Qf1#
    • 1...R6a5
      • 2.Bd7#
    • 1...Ra8
      • 2.Bd7#
    • 1...Be5
      • 2.Se3#
    • 1...Sd6
      • 2.Bd7#
    • 1...d4
      • 2.Qf1#
  • Tries
    • 1.Qxd5+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Be5!
    • 1.Qxc2+?
      • 1...Kf4
        • 2.Qf2#
      • 1...Re4!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Se3#
      • 1...Qe8
        • 2.Rxf6#
      • 1...Bd4
        • 2.Qxc2#
      • 1...Sd6
        • 2.Bd7#
      • 1...d4
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(l);N_GUARD::R1(F),XB(h)
    • R(c);N_GUARD::QAR(B)
    • R(g);N_GUARD::B(E)
    • B(h);SBLOCK::S(C)
    • S(k);S_CUTR(g)::B(E)
    • P(d);S_CUTR(c)::QAR(B)
  • Tries
    • Try
      • Q(B);CHECK,XP(d)
      • Vars
        • K(e);P-FLIGHT::QAR1(B)
      • Refutation
        • B(h);P_SPINB(h)
    • Try
      • Q(B);CHECK,XB(a)
      • Vars
        • K(e);P-FLIGHT::QAR2(B)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • B(G);
    • Threat
      • S(C)
    • Vars
      • Q(l);N_GUARD::R1(F),XB(h)
      • B(h);S_CUTR(c)::QAB(B),XB(a)
      • S(k);S_CUTR(g)::B(E)
      • P(d);S_CUTR(c)::QAR(B)
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