MESON Chess Problem Database

Problem Display
PID: 53293 (2Qn1nB1/N1pP1Pp1/3PkP2/3ppppN/3PRPP1/8/8/3RK3 w - - 0 1)

Chebanov, Nikolai V

Sachsische Zeitung, 2003

2Qn1nB1/N1pP1Pp1/3PkP2/3ppppN/3PRPP1/8/8/3RK3

#2

14 + 9

4393 Uralski Problemist 2004

SOLUTION

  • SOUND
  • Tries
    • 1.Sxg7+?
      • 1...Kxd6
        • 2.fxe5#
      • 1...Kxf6!
    • 1.Qxc7?
      • threat
        • 2.Rxe5#
      • 1...Sxd7
        • 2.f8S#
      • 1...dxe4
        • 2.d5#
      • 1...fxe4
        • 2.f5#
      • 1...gxf6
        • 2.Sg7#
      • 1...Sg6
        • 2.f8S#
      • 1...Sc6!
    • 1.dxe5?
      • threat
        • 2.Sxg7#
      • 1...gxf6
        • 2.Sg7#
      • 1...g6
        • 2.Sg7#
      • 1...d4!
    • 1.fxe5?
      • threat
        • 2.Sxg7#
      • 1...gxf6
        • 2.Sg7#
      • 1...g6
        • 2.Sg7#
      • 1...dxe4!
    • 1.gxf5+?
      • 1...Kxd6
        • 2.fxe5#
      • 1...Kxf5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Rxe5#
      • 1...dxe4
        • 2.d5#
      • 1...fxe4
        • 2.f5#
      • 1...cxd6
        • 2.Sc7#
      • 1...gxf6
        • 2.Sg7#
      • 1...Sc6
        • 2.d8S#
      • 1...Sg6
        • 2.f8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK,XP(g)
      • Vars
        • K(e);N_SPINP(b),P-FLIGHT,XP(H)::P(E),XP(b)
      • Refutation
        • K(e);N_SPINP(b),P-FLIGHT,XP(I)
    • Try
      • Q(M);XP(f)
      • Threat
        • R1(D),XP(b)
      • Vars
        • S(i);OGATE,XP(K)::P=S
        • P(a);N_SPINP(b),OGATE,XR(D)::P(C)
        • P(c);N_SPINP(b),OGATE,XR(D)::P(E)
        • P(g);SBLOCK,XP(I)::S(G)
        • S(i);OGATE::P=S
      • Refutation
        • S(h);
    • Try
      • P(C);XP(b)
      • Threat
        • S(G),XP(g)
      • Vars
        • P(g);XP(I)::S(G)
        • P(g);::S(G)
      • Refutation
        • P(a);
    • Try
      • P(E);XP(b)
      • Threat
        • S(G),XP(g)
      • Vars
        • P(g);XP(I)::S(G)
        • P(g);::S(G)
      • Refutation
        • P(a);XR(D)
    • Try
      • P(F);CHECK,XP(c)
      • Vars
        • K(e);N_SPINP(b),P-FLIGHT,XP(H)::P(E),XP(b)
      • Refutation
        • K(e);N_SPINP(b),S_FLIGHT,XP(F)
  • Actual
    • S(J);
    • Threat
      • R1(D),XP(b)
    • Vars
      • P(a);N_SPINP(b),OGATE,XR(D)::P(C)
      • P(c);N_SPINP(b),OGATE,XR(D)::P(E)
      • P(f);SBLOCK,XP(H)::S(J)
      • P(g);SBLOCK,XP(I)::S(G)
      • S(h);OGATE::P=S
      • S(i);OGATE::P=S
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