MESON Chess Problem Database

Problem Display
PID: 11969 (2B1K3/8/1N1pNP2/3Pkp1Q/8/4B3/3PP2b/3r3b w - - 0 1)

Chepizhni, Viktor Ivanovich

Rudenko, Valentin Fedorovich

The Problemist, 1973

2B1K3/8/1N1pNP2/3Pkp1Q/8/4B3/3PP2b/3r3b

#2

10 + 6

3753 FIDE Album (1971-1973) 1978
6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Sd7#
    • 1...Be4
      • 2.Bd4#
  • Tries
    • 1.Sf8?
      • threat
        • 2.Qxf5#
      • 1...Ke4
        • 2.Qxf5#
      • 1...Kxf6
        • 2.Qh8#
      • 1...Be4
        • 2.Sfd7#
      • 1...Rf1!
    • 1.Qxh2+?
      • 1...Ke4
        • 2.Sg5#
        • 2.Qf4#
      • 1...f4
        • 2.Qxf4#
      • 1...Kxf6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qxf5#
      • 1...Ke4
        • 2.Qxf5#
      • 1...Kxf6
        • 2.Bd4#
      • 1...Be4
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINP(e),S_FLIGHT,XP(H)::S(F)
    • B(b);SBLOCK::B(C)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(E),XP(e)
      • Vars
        • K(d);N_SPINP(e),P-FLIGHT::QAB1(E),XP(e)
        • K(d);N_SPINP(e),OGATEB,S_FLIGHT,XP(H)::QAB(E)
        • B(b);SBLOCK::S(G)
      • Refutation
        • R(a);
    • Try
      • Q(E);CHECK,N_PINP(e),XB(c)
      • Vars
        • P(e);P_SPINP(e)::QAB1(E),XP(e)
      • Refutation
        • K(d);S_FLIGHT,XP(H)
  • Actual
    • S(G);
    • Threat
      • QAR1(E),XP(e)
    • Vars
      • K(d);N_SPINP(e),P-FLIGHT::QAB1(E),XP(e)
      • K(d);N_SPINP(e),S_FLIGHT,XP(H)::B(C)
      • B(b);SBLOCK::S(F)
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