MESON Chess Problem Database

Problem Display
PID: 132386 (N1K2n2/pQP4r/1PRNPR2/1P1k1p2/8/2Bbp3/8/5B2 w - - 0 1)

Bruchner, Siegfried

Wochenpost, 1994

N1K2n2/pQP4r/1PRNPR2/1P1k1p2/8/2Bbp3/8/5B2

#2

12 + 7

6114 Problemschach-Jahrbuch (1994) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc7+
      • 2.Sxc7#
    • 1...Bb1
      • 2.Bc4#
    • 1...Bc2
      • 2.Bc4#
    • 1...Bc4
      • 2.Bg2#
      • 2.Bxc4#
    • 1...Be4
      • 2.Bc4#
    • 1...Bxb5
      • 2.Bg2#
    • 1...axb6
      • 2.Sxb6#
  • Tries
    • 1.Bxd3?
      • threat
        • 2.Bc4#
      • 1...Rxc7+
        • 2.Sxc7#
      • 1...Rh4!
    • 1.Rc5+?
      • 1...Kxc5
        • 2.Qc6#
      • 1...Kxd6!
    • 1.Rxf5+?
      • 1...Bxf5
        • 2.Bc4#
      • 1...Kxe6!
    • 1.bxa7?
      • threat
        • 2.Sb6#
      • 1...Rxc7+
        • 2.Sxc7#
      • 1...Sd7!
    • 1.e7?
      • threat
        • 2.Rc4#
      • 1...Bxb5
        • 2.Bg2#
      • 1...Bc4
        • 2.Bg2#
        • 2.Bxc4#
        • 2.Rxc4#
      • 1...Se6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Rc5#
      • 1...Rxc7+
        • 2.Rxc7#
      • 1...Kxe4
        • 2.Rc4#
      • 1...Bxe4
        • 2.Bc4#
      • 1...fxe4
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(f);CHECK,XP(J)::S(K),XR(f)
    • B(a);OGATE::B(A)
    • B(a);N_GUARD,XP(C)::B(A)
    • P(e);XP(D)::S(K),XP(e)
  • Tries
    • Try
      • B(A);XB(a)
      • Threat
        • B(A)
      • Vars
        • R(f);CHECK,XP(J)::S(K),XR(f)
      • Refutation
        • R(f);
    • Try
      • R(E);CHECK
      • Vars
        • K(c);P-FLIGHT,XR(E)::QAR1(I)
      • Refutation
        • K(c);P-FLIGHT,XS(F)
    • Try
      • R(H);CHECK,XP(d)
      • Vars
        • B(a);OGATE,P_PINP(G),XR(H)::B(A)
      • Refutation
        • K(c);S_FLIGHT,XP(G)
    • Try
      • P(D);XP(e)
      • Threat
        • S(K)
      • Vars
        • R(f);CHECK,XP(J)::S(K),XR(f)
      • Refutation
        • S(g);
    • Try
      • P(G);
      • Threat
        • QAB(I)+R(E)
      • Vars
        • B(a);N_GUARD,XP(C)::B(A)
      • Refutation
        • S(g);
  • Actual
    • S(F);
    • Threat
      • QAB(I)+R(E),DCHECK
    • Vars
      • R(f);CHECK,OGATE,XP(J)::QAB(I)+R(E),XR(f)
      • K(c);S_FLIGHT,XS(F)::QAB(I)+R(E),DCHECK
      • B(a);OGATE,SBLOCK,XS(F)::B(A)
      • P(d);SBLOCK,XS(F)::R(H)
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