MESON Chess Problem Database

Problem Display
PID: 39655 (3R4/2p1n2P/2p3p1/K3k3/1N1pN1r1/1Q1BB3/4n3/5R1q w - - 0 1)

Hirschenson, Aaron

1st Prize, Israel Ring Ty., 1996-1997

3R4/2p1n2P/2p3p1/K3k3/1N1pN1r1/1Q1BB3/4n3/5R1q

#2

9 + 9

145 StrateGems 2001
5417 FIDE Album (1995-1997) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.h8Q#
      • 2.h8B#
    • 1...Qxe4
      • 2.h8Q#
      • 2.h8B#
    • 1...Qg1
      • 2.h8Q#
      • 2.h8B#
    • 1...Sc1
      • 2.Bxd4#
    • 1...Sg1
      • 2.Bxd4#
    • 1...Sc3
      • 2.Bxd4#
    • 1...Sg3
      • 2.Bxd4#
    • 1...Sf5
      • 2.Sxc6#
    • 1...Sc8
      • 2.Sxc6#
    • 1...Sg8
      • 2.Sxc6#
  • Tries
    • 1.Rf6?
      • threat
        • 2.Qe6#
      • 1...Sf4
        • 2.Bxd4#
      • 1...Sd5
        • 2.Sxc6#
      • 1...Qa1+!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qe6#
      • 1...Sf4
        • 2.Bxd4#
      • 1...Qd5
        • 2.h8Q#
        • 2.h8B#
      • 1...Sd5
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::P=Q
    • Q(a);N_GUARD,XS(F)::P=Q
    • S(b);N_GUARD::B(D),XP(c)
    • S(i);N_GUARD::S(E),XP(f)
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR1(B)
      • Vars
        • S(b);N_GUARD::B(D),XP(c)
        • S(i);N_GUARD::S(E),XP(f)
      • Refutation
        • Q(a);CHECK
  • Actual
    • S(F);
    • Threat
      • QAR1(B)
    • Vars
      • S(b);N_GUARD,S_CUTR(d)::B(D),XP(c)
      • Q(a);N_GUARD,P_PINS(F)::P=Q
      • S(i);N_GUARD,S_CUTQ(a)::S(E),XP(f)
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Developed and maintained by Brian Stephenson.
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