MESON Chess Problem Database

Problem Display
PID: 81625 (K1RR4/3B4/1N6/1p2p2r/1p2k3/3Np3/2n1P1n1/b2Q4 w - - 0 1)

Chepizhni, Viktor Ivanovich

2nd Prize=, Zadachi i Etyudi, 2005

K1RR4/3B4/1N6/1p2p2r/1p2k3/3Np3/2n1P1n1/b2Q4

#2

8 + 9

6167 Viktor Chepizhny 2007
56 The Problemist 2008
23 Die Schwalbe 2012
15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Sf2#
      • 2.Bf5#
    • 1...Rf5
      • 2.Bc6#
    • 1...Sf4
      • 2.Sc5#
  • Tries
    • 1.Rf8?
      • threat
        • 2.Sc5#
      • 1...Kd4
        • 2.Sf2#
      • 1...Bd4
        • 2.Bc6#
      • 1...Rf5!
    • 1.Qf1?
      • threat
        • 2.Bc6#
      • 1...Kd4
        • 2.Bf5#
      • 1...Rh6
        • 2.Bf5#
      • 1...Sd4
        • 2.Sc5#
      • 1...Sf4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sc5#
      • 1...Kd4
        • 2.Sf2#
      • 1...Kxd5
        • 2.Bf5#
      • 1...Bd4
        • 2.Sf6#
      • 1...Sd4
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(i);SBLOCK::B(E)
    • S(c);SBLOCK::S(C)
  • Tries
    • Try
      • R(H);
      • Threat
        • S(C)
      • Vars
        • K(f);P-FLIGHT::QAR(A)+S(C)
        • B(a);SBLOCK::B(E)
      • Refutation
        • R(i);
    • Try
      • Q(A);
      • Threat
        • B(E)
      • Vars
        • K(f);P-FLIGHT::R(H)+B(E)
        • R(i);N_GUARD::B(E)
        • S(b);SBLOCK::S(C)
      • Refutation
        • S(c);
  • Actual
    • S(D);
    • Threat
      • S(C)
    • Vars
      • K(f);P-FLIGHT::QAR(A)+S(C)
      • K(f);S_FLIGHT,XS(D)::R(H)+B(E)
      • B(a);SBLOCK::S(D)
      • S(b);SBLOCK::S(D)
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