MESON Chess Problem Database

Problem Display
PID: 240160 (4N1r1/7n/3pR3/b4P1k/5K1p/2B4P/2r1P3/3B4 w - - 0 1)

Zilahi, Zoltan

Freie Presse, 1977

4N1r1/7n/3pR3/b4P1k/5K1p/2B4P/2r1P3/3B4

#2

8 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4+
      • 2.hxg4#
    • 1...Rg7
      • 2.Sxg7#
    • 1...Rf8
      • 2.Sg7#
    • 1...Rh8
      • 2.Sg7#
  • Tries
    • 1.e3+?
      • 1...Rg4+
        • 2.Bxg4#
        • 2.hxg4#
      • 1...Re2!
    • 1.e4+?
      • 1...Rg4+
        • 2.Bxg4#
        • 2.hxg4#
      • 1...Re2!
  • Keys
    • 1.Bg7!
      • threat
        • 2.Rh6#
      • 1...Rc4+
        • 2.e4#
      • 1...Bd2+
        • 2.e3#
      • 1...Rxg7
        • 2.Sxg7#
      • 1...Sf6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(g);CHECK,OGATE::P(D),XR(g)
    • R(g);N_GUARD::S(H),XR(g)
    • R(g);N_GUARD,P_PINP(F)::S(H)
    • R(g);N_GUARD::S(H)
  • Tries
    • Try
      • P(B);CHECK
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • P(B);CHECK
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • B(C);
    • Threat
      • R1(G)
    • Vars
      • R(a);CHECK,N_GUARD::B(A)+P(B)
      • B(c);CHECK,S_CUTR(a)::B(A)+P(B)
      • R(g);XB(C)::S(H),XR(g)
      • S(f);N_GUARD::S(H),XS(f)
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Developed and maintained by Brian Stephenson.
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