MESON Chess Problem Database

Problem Display
PID: 15646 (4R2b/np3p2/3kPp2/Np1N4/3P3K/8/Q7/5R1b w - - 0 1)

Schonholzer, Andreas

5th Prize, Schach-Aktiv, 1986

4R2b/np3p2/3kPp2/Np1N4/3P3K/8/Q7/5R1b

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Qh2#
    • 1...Sc6
      • 2.Sxb7#
    • 1...fxe6
      • 2.Rd8#
  • Tries
    • 1.Re1?
      • threat
        • 2.Rd8#
      • 1...Bxd5
        • 2.Qh2#
      • 1...Sc6
        • 2.Sxb7#
      • 1...Be4!
    • 1.Rf5?
      • threat
        • 2.Qh2#
      • 1...fxe6
        • 2.Rd8#
      • 1...Sc6
        • 2.Sxb7#
      • 1...Bg2!
    • 1.Rxf6?
      • threat
        • 2.Rd8#
      • 1...Bxd5
        • 2.Qh2#
      • 1...Sc6
        • 2.Sxb7#
      • 1...Bxf6+!
    • 1.Qc4?
      • threat
        • 2.Sxb7#
        • 2.Qc5#
      • 1...Bxd5
        • 2.Qc5#
      • 1...fxe6
        • 2.Rd8#
      • 1...b6
        • 2.Sb7#
      • 1...bxc4!
  • Keys
    • 1.Rc1!
      • threat
        • 2.Sxb7#
      • 1...Bxd5
        • 2.Qh2#
      • 1...fxe6
        • 2.Rd8#
      • 1...b6
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK,XS(F)::QAB(B)
    • S(e);SBLOCK::S(E),XP(f)
    • P(g);SBLOCK,XP(G)::R(H)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(H)
      • Vars
        • B(a);SBLOCK,XS(F)::QAB(B)
        • S(e);SBLOCK::S(E),XP(f)
      • Refutation
        • B(a);
    • Try
      • R(A);
      • Threat
        • QAB(B)
      • Vars
        • P(g);SBLOCK,XP(G)::R(H)
        • S(e);SBLOCK::S(E),XP(f)
      • Refutation
        • B(a);
    • Try
      • R(A);XP(d)
      • Threat
        • R(H)
      • Vars
        • B(a);SBLOCK,XS(F)::QAB(B)
        • S(e);SBLOCK::S(E),XP(f)
      • Refutation
        • B(h);CHECK,XR(A)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(F)::QAB1(B)
        • P(g);SBLOCK,XP(G)::R(H)
        • P(f);::S(E)
      • Refutation
        • P(b);XQ(B)
  • Actual
    • R(A);
    • Threat
      • S(E),XP(f)
    • Vars
      • B(a);SBLOCK,XS(F)::QAB(B)
      • P(g);SBLOCK,XP(G)::R(H)
      • P(f);::S(E)
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