MESON Chess Problem Database

Problem Display
PID: 65265 (5R1B/1p2K3/2P5/r1p2pRN/QpBPkPN1/7n/p3P3/1b3n1q w - - 0 1)

Zidek, Alexander

1st Prize, Schach-Report/Deutsche Schachblatter, 1989

5R1B/1p2K3/2P5/r1p2pRN/QpBPkPN1/7n/p3P3/1b3n1q

#2

12 + 11

702 Phenix 1992
4827 FIDE Album (1989-1991) 1997
3713 Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Qxc2#
    • 1...bxc6
      • 2.Qxc6#
  • Tries
    • 1.Bd3+?
      • 1...Kd5
        • 2.Rgxf5#
        • 2.Rfxf5#
        • 2.Rd8#
      • 1...Bxd3!
    • 1.Rgxf5?
      • threat
        • 2.Bd5#
      • 1...Sxf4
        • 2.Rxf4#
      • 1...bxc6
        • 2.Qxc6#
      • 1...Se3
        • 2.Sg3#
      • 1...cxd4!
    • 1.Rfxf5?
      • threat
        • 2.Bd5#
      • 1...Sxf4
        • 2.Rxf4#
      • 1...cxd4
        • 2.Shf6#
      • 1...bxc6
        • 2.Qxc6#
      • 1...Se3
        • 2.Sg3#
      • 1...Sxg5!
    • 1.Qb3?
      • threat
        • 2.Bd5#
      • 1...Sxf4
        • 2.Sf2#
      • 1...cxd4
        • 2.Sgf6#
      • 1...Se3
        • 2.Qxe3#
      • 1...bxc6!
  • Keys
    • 1.Rd8!
      • threat
        • 2.Bd5#
      • 1...Sxf4
        • 2.Shf6#
      • 1...cxd4
        • 2.Rxd4#
      • 1...fxg4
        • 2.Re5#
      • 1...bxc6
        • 2.Qxc6#
      • 1...Se3
        • 2.Sgf6#

Anticipated by 15832(1988-1989)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB(B),XB(a)
    • P(k);OGATE,XP(I)::QAB(B),XP(k)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • B(a);XB(C)
    • Try
      • R(G);XP(j)
      • Threat
        • B(C)
      • Vars
        • S(e);OGATE,XP(E)::R1(G),XS(e)
        • P(k);OGATE,XP(I)::QAB(B),XP(k)
        • S(b);N_GUARD::S(H)
      • Refutation
        • P(i);XP(D)
    • Try
      • R(K);XP(j)
      • Threat
        • B(C)
      • Vars
        • S(e);OGATE,XP(E)::R1(K),XS(e)
        • P(i);SBLOCK,XP(D)::S(H)
        • P(k);OGATE,XP(I)::QAB(B),XP(k)
        • S(b);N_GUARD::S(H)
      • Refutation
        • S(e);XR(G)
    • Try
      • Q(B);
      • Threat
        • B(C)
      • Vars
        • S(e);N_GUARD,XP(E)::S(F)
        • P(i);SBLOCK,XP(D)::S(F)
        • S(b);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • P(k);XP(I)
  • Actual
    • R(K);
    • Threat
      • B(C)
    • Vars
      • S(e);SBLOCK,XP(E)::S(H)
      • P(i);OGATE,XP(D)::R1(K),XP(i)
      • P(j);OGATE,XS(F)::R1(G)
      • P(k);OGATE,XP(I)::QAB(B),XP(k)
      • S(b);SBLOCK::S(F)
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