MESON Chess Problem Database

Problem Display
PID: 73809 (b7/B1rp1n2/R2Pp1N1/2nkPpp1/R7/1P6/1PP5/1QN2BbK w - - 0 1)

Pituk, Alexander

Freie Presse, 1993

b7/B1rp1n2/R2Pp1N1/2nkPpp1/R7/1P6/1PP5/1QN2BbK

#2

13 + 10

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.c4#
    • 1...Sxb3
      • 2.Bg2#
    • 1...Sd3
      • 2.Bg2#
    • 1...Sxa4
      • 2.Bg2#
    • 1...Sxa6
      • 2.Bg2#
    • 1...Sb7
      • 2.Bg2#
    • 1...Sxe5
      • 2.Se7#
    • 1...Sxd6
      • 2.Rxd6#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sc3#
        • 2.c4#
      • 1...Sxb3
        • 2.Bg2#
      • 1...Sxa4
        • 2.Bg2#
      • 1...Sxa6
        • 2.Bg2#
      • 1...Sxe5
        • 2.Sc3#
        • 2.Se7#
      • 1...Sxd6
        • 2.Sc3#
        • 2.Rxd6#
      • 1...Bd4
        • 2.Rxd4#
        • 2.c4#
      • 1...Sd3
        • 2.Bg2#
      • 1...Sb7
        • 2.Bg2#
      • 1...Se4!
    • 1.Sd3?
      • threat
        • 2.Se7#
      • 1...Sxd3
        • 2.Bg2#
      • 1...Sxa4
        • 2.Bg2#
      • 1...Bd4!
    • 1.Rd4+?
      • 1...Bxd4
        • 2.c4#
      • 1...Kxd4+!
    • 1.c3?
      • threat
        • 2.Bc4#
      • 1...Sxb3
        • 2.Bg2#
      • 1...Sxa4
        • 2.Bg2#
      • 1...Sxa6
        • 2.Bg2#
      • 1...Sxe5
        • 2.Se7#
      • 1...Sxd6
        • 2.Rxd6#
      • 1...Sd3
        • 2.Bg2#
      • 1...Sb7
        • 2.Bg2#
      • 1...Se4!
  • Keys
    • 1.Sa2!
      • threat
        • 2.Sc3#
      • 1...Sxb3
        • 2.Bg2#
      • 1...Sxa4
        • 2.Bg2#
      • 1...Sxa6
        • 2.Bg2#
      • 1...Bd4
        • 2.c4#
      • 1...Sd3
        • 2.Bg2#
      • 1...Se4
        • 2.Sb4#
      • 1...Sb7
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);SBLOCK::P(F)
    • S(b);N_GUARD,XP(G)::B(C)
    • S(b);N_GUARD::B(C)
    • S(b);N_GUARD,XR(H)::B(C)
    • S(b);N_GUARD,XR(J)::B(C)
    • S(i);SBLOCK,XP(I)::S(L)
    • S(i);OGATE,XP(K)::R1(J),XS(i)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD,XP(G)::B(C)
        • S(b);N_GUARD,XR(H)::B(C)
        • S(b);N_GUARD,XR(J)::B(C)
        • S(b);N_GUARD::B(C)
      • Refutation
        • S(b);
    • Try
      • S(B);
      • Threat
        • S(L)
      • Vars
        • S(b);N_GUARD,XS(B)::B(C)
        • S(b);N_GUARD,XR(H)::B(C)
      • Refutation
        • B(a);
    • Try
      • R(H);CHECK
      • Vars
        • B(a);SBLOCK,XR(H)::P(F)
      • Refutation
        • K(c);CHECK,P-FLIGHT,P_SPINS(b),XR(H)
    • Try
      • P(F);
      • Threat
        • B(C)
      • Vars
        • S(b);N_GUARD,XP(G)::B(C)
        • S(b);N_GUARD,XR(H)::B(C)
        • S(b);N_GUARD,XR(J)::B(C)
        • S(i);SBLOCK,XP(I)::S(L)
        • S(i);OGATE,XP(K)::R1(J),XS(i)
        • S(b);N_GUARD::B(C)
      • Refutation
        • S(b);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • S(b);N_GUARD,XP(G)::B(C)
      • S(b);N_GUARD,XR(H)::B(C)
      • S(b);N_GUARD,XR(J)::B(C)
      • B(a);SBLOCK::P(F)
      • S(b);N_GUARD::B(C)
      • S(b);SBLOCK::S(B)
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