MESON Chess Problem Database

Problem Display
PID: 64740 (1n2Bb2/1nR2p2/2Npp3/2PkP1NR/P3p3/2P1p1K1/4Q3/7b w - - 0 1)

Chepizhni, Viktor Ivanovich

1st Prize, Ukraine Ty., 1981

1n2Bb2/1nR2p2/2Npp3/2PkP1NR/P3p3/2P1p1K1/4Q3/7b

#2

11 + 10

3752 FIDE Album (1980-1982) 1988
6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Qb5#
    • 1...Sxc5
      • 2.c4#
    • 1...dxc5
      • 2.c4#
    • 1...dxe5
      • 2.Sb4#
  • Tries
    • 1.Sxe6?
      • threat
        • 2.Qa2#
      • 1...Kxe6
        • 2.Bxf7#
      • 1...Sxc5
        • 2.Sf4#
      • 1...dxc5
        • 2.Sf4#
      • 1...fxe6
        • 2.Sb4#
      • 1...Sa5!
    • 1.Qd1+?
      • 1...Kxc5
        • 2.Qd4#
      • 1...Kc4!
    • 1.Qd3+?
      • 1...Kxc5
        • 2.Qb5#
        • 2.Qd4#
      • 1...exd3!
    • 1.Qb5?
      • threat
        • 2.c4#
      • 1...Sa5
        • 2.cxd6#
      • 1...Sxc6!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qc4#
      • 1...Bxe4
        • 2.Sb4#
      • 1...Sxc5
        • 2.Sf6#
      • 1...Sxc6
        • 2.Bxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(d);OGATEB,P-FLIGHT,XP(E)::QAR1(A)
    • S(g);SBLOCK,XP(E)::P(B)
    • P(e);SBLOCK,XP(E)::P(B)
    • P(e);SBLOCK,XP(F)::S(I)
  • Tries
    • Try
      • S(G);XP(f)
      • Threat
        • QAB(A)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XS(G)::B(K),XP(h)
        • S(g);SBLOCK,XP(E)::S(G)
        • P(e);SBLOCK,XP(E)::S(G)
        • P(h);SBLOCK,XS(G)::S(I)
      • Refutation
        • S(g);
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(E)::QAB1(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • P(B)
      • Vars
        • S(g);N_GUARD::QAR(A)+P(E),XP(e)
      • Refutation
        • S(i);XS(I)
  • Actual
    • S(G);XP(c)
    • Threat
      • QAR2(A)
    • Vars
      • K(d);P_SPINP(b),S_FLIGHT,XS(G)::QAR2(A)
      • B(a);SBLOCK,XS(G)::S(I)
      • S(g);SBLOCK,XP(E)::S(G)
      • S(i);OGATE,XS(I)::B(K),XS(i)
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